Switched to using OPA4354 quad op-amp for improved performance
This commit is contained in:
Bill Cox
@@ -9,7 +9,7 @@ Besides being simple, low-cost, and fast, it is easy to get right, unlike other
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INMs are suitable for both board level implementation, and ASIC implementation. Speed is
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limited by the speed of a voltage buffer and comparator, and can run in excess of 100
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Mbit/second per second with high performance components. Cheap solutions with CMOS quad
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op-amps can run at 500 Kbit/second.
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op-amps can run at 6Mbit/second.
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Adjacent bits from an INM are correlated, so whitening is required before use in
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cryptography. INM output has a highly predictable amount of entropy for easy estimation
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@@ -102,14 +102,14 @@ for the small verision:
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![Simulation of small Infinite Noise Multiplier](infnoise_full/shortsim.png?raw=true "Small
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And again for the fast version.
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![Simulation of fast Infinite Noise Multiplier](infnoise_full/shortsim.png?raw=true "Fast
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### Design Analysis
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@@ -6,6 +6,7 @@ P/N: ADA4891-1ARJZ-R7
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Digikey: ADA4891-1ARJZ-R7CT-ND
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Package: SOT-23 5 pin
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Note: Vin can only go up to V+ - 0.8V
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Note: Quad op-amp version available: ADA4891-4
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USB 2.0 to parallel FIFO
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P/N FT240XQ-T
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@@ -27,6 +28,16 @@ P/N: TS5A23157RSER
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Digikey: 296-21919-1-ND
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Package: 10-UQFN, 2mm X 1.5mm, 0.5mm pitch
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Fast quad SPST analog switch, break-before-make
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P/N: ADG713BRUZ-REEL7
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Digikey: ADG713BRUZ-REEL7CT-ND
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Package: 16-TSSOP
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Rail-to-rail high-speed quad op-amp
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P/N: OPA4354AIDR
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Digikey: 296-12643-1-ND
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Package:
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Passives
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--------
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@@ -45,3 +56,31 @@ Digikey: RHM8.2KCDCT-ND
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10K Ohm 1% 1/16W chip resistor
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P/N: MCR01MRTF1002
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Digikey: RHM10.0KCDCT-ND
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4X 10K Ohm 1% 65mW chip resistors
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P/N: CRA04S08310K0FTD
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Digikey: CRA4S810.0KACT-ND
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2.7K 1% 63mW chip resistor
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P/N: MCR01MRTF2701
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Digikey: RHM2.70KCDCT-ND
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100K 5% 63mW chip resistor
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P/N: CRCW0402100KJNED
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Digikey: 541-100KJCT-ND
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51K 1% 63mW chip resistor
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P/N: RC1005F513CS
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Digikey: 1276-4178-2-ND
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53.6K 1% 63mW chip resistor
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P/N: RMCF0402FT53K6
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Digikey: RMCF0402FT53K6TR-ND
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300 Ohm 1% 63mW chip resistor
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P/N: CRCW0402300RFKED
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Digikey: 541-300LCT-ND
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1.1K 1% 100mW chip resistor
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P/N: CRCW06031K10FKEA
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Digikey: 541-1.10KHCT-ND
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@@ -1,200 +0,0 @@
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Version 4
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SHEET 1 1396 1108
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WIRE 560 -336 448 -336
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WIRE 1056 -336 960 -336
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WIRE 448 -304 448 -336
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WIRE -240 -288 -240 -352
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WIRE 960 -288 960 -336
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WIRE -240 -160 -240 -208
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WIRE -48 -160 -240 -160
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WIRE 112 -160 -48 -160
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WIRE 192 -160 112 -160
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WIRE 320 -160 272 -160
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WIRE 448 -160 448 -224
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WIRE 960 -160 960 -208
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WIRE 1328 -48 528 -48
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WIRE 1344 -48 1328 -48
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WIRE -640 -16 -640 -96
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WIRE 224 -16 224 -32
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WIRE 112 0 112 -160
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WIRE 192 0 112 0
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WIRE 320 16 320 -160
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WIRE 320 16 256 16
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WIRE 416 16 320 16
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WIRE 672 16 416 16
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WIRE 192 32 144 32
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WIRE 224 80 224 48
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WIRE -640 112 -640 64
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WIRE -336 112 -640 112
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WIRE 80 112 -336 112
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WIRE 1312 112 1104 112
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WIRE 672 128 672 16
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WIRE 624 144 592 144
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WIRE -640 160 -640 112
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WIRE 1184 224 1184 208
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WIRE 224 240 224 224
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WIRE 1104 240 1104 112
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WIRE 1152 240 1104 240
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WIRE 80 256 80 112
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WIRE 192 256 80 256
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WIRE 1312 256 1312 112
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WIRE 1312 256 1216 256
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WIRE 432 272 256 272
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WIRE 528 272 528 -48
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WIRE 528 272 432 272
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WIRE 624 272 624 192
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WIRE 624 272 528 272
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WIRE 672 272 672 208
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WIRE 752 272 672 272
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WIRE 848 272 752 272
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WIRE 992 272 928 272
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WIRE 1040 272 992 272
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WIRE 1152 272 1040 272
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WIRE -288 288 -496 288
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WIRE -64 288 -208 288
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WIRE 16 288 -64 288
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WIRE 128 288 16 288
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WIRE 144 288 144 32
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WIRE 144 288 128 288
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WIRE 192 288 144 288
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WIRE 1040 304 1040 272
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WIRE -640 320 -640 240
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WIRE -64 320 -64 288
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WIRE 1184 320 1184 288
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WIRE 224 336 224 304
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WIRE 672 336 672 272
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WIRE 624 352 624 272
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WIRE 1312 368 1312 256
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WIRE 624 400 592 400
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WIRE -64 432 -64 384
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WIRE 1040 432 1040 368
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WIRE 224 464 224 448
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WIRE 192 480 64 480
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WIRE 320 496 256 496
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WIRE 448 496 320 496
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WIRE 672 496 672 416
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WIRE 672 496 448 496
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WIRE 128 512 128 288
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WIRE 192 512 128 512
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WIRE 224 560 224 528
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WIRE 1312 576 1312 368
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WIRE -96 640 -240 640
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WIRE 64 640 64 480
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WIRE 64 640 -96 640
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WIRE 176 640 64 640
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WIRE 320 640 320 496
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WIRE 320 640 256 640
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WIRE -240 688 -240 640
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WIRE 1040 784 1040 768
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WIRE -240 816 -240 768
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WIRE -496 912 -496 288
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WIRE 32 912 -496 912
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WIRE 1024 912 32 912
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WIRE 1040 912 1040 864
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WIRE 1040 912 1024 912
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WIRE 1312 912 1312 656
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WIRE 1312 912 1040 912
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WIRE 1024 976 1024 912
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WIRE 1024 1088 1024 1056
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FLAG -640 320 0
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FLAG -640 -96 Vsup
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FLAG -64 432 0
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FLAG -240 816 0
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FLAG -240 -352 Vsup
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FLAG 1040 432 0
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FLAG 224 560 0
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FLAG 224 336 0
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FLAG 224 80 0
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FLAG 1184 320 0
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FLAG 224 -32 Vsup
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FLAG 224 224 Vsup
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FLAG 224 448 Vsup
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FLAG 1184 208 Vsup
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FLAG 592 144 Vref
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FLAG 592 400 Vref
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FLAG -272 336 CLK
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FLAG 448 -160 0
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FLAG 560 -336 CLK
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FLAG -224 336 Vref
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FLAG 864 320 Vref
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FLAG 912 320 CLK
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FLAG 960 -160 0
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FLAG 1056 -336 Vsup
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FLAG 1024 1088 0
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FLAG 1040 768 Vsup
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FLAG 16 288 A
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FLAG 992 272 B
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FLAG 1312 368 BUFOUT
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FLAG 32 912 AIN
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FLAG 752 272 BIN
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FLAG 416 16 HighAmpOut
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FLAG 448 496 LowAmpOut
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FLAG 432 272 OUT
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FLAG -48 -160 Vhigh
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FLAG -96 640 Vlow
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FLAG 1328 -48 OUT
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FLAG -336 112 Vref
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SYMBOL Opamps\\LTC6088 224 272 R0
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SYMATTR InstName COMP
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SYMBOL Opamps\\LTC6088 224 496 R0
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SYMATTR InstName LOWAMP
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SYMBOL Opamps\\LTC6088 224 16 R0
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SYMATTR InstName HIGHAMP
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SYMBOL Opamps\\LTC6088 1184 256 R0
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SYMATTR InstName BUF
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SYMBOL res -656 -32 R0
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SYMATTR InstName R1
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SYMATTR Value 10K
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SYMBOL res -656 144 R0
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SYMATTR InstName R2
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SYMATTR Value 10K
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SYMBOL sw -304 288 R270
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SYMATTR InstName S1
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SYMBOL sw 832 272 R270
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SYMATTR InstName S2
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SYMBOL sw 672 112 R0
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SYMATTR InstName S3
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SYMBOL sw 672 320 R0
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SYMATTR InstName S4
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SYMBOL cap -80 320 R0
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SYMATTR InstName C1
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SYMATTR Value 100pF
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SYMBOL res -256 -304 R0
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SYMATTR InstName R3
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SYMATTR Value 10K
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SYMBOL res -256 672 R0
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SYMATTR InstName R6
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SYMATTR Value 10K
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SYMBOL cap 1024 304 R0
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SYMATTR InstName C2
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SYMATTR Value 100pF
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SYMBOL voltage 448 -320 R0
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WINDOW 123 0 0 Left 2
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WINDOW 39 0 0 Left 2
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SYMATTR InstName V1
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SYMATTR Value PULSE(0 5 1u 1n 1n 1u 2u)
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SYMBOL voltage 960 -304 R0
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WINDOW 123 0 0 Left 2
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WINDOW 39 0 0 Left 2
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SYMATTR InstName V2
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SYMATTR Value 5
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SYMBOL res 176 -144 R270
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WINDOW 0 32 56 VTop 2
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WINDOW 3 0 56 VBottom 2
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SYMATTR InstName R7
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SYMATTR Value 10K
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SYMBOL res 160 656 R270
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WINDOW 0 32 56 VTop 2
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WINDOW 3 0 56 VBottom 2
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SYMATTR InstName R8
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SYMATTR Value 10K
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SYMBOL res 1296 560 R0
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SYMATTR InstName R9
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SYMATTR Value 150
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SYMBOL res 1024 768 R0
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SYMATTR InstName R10
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SYMATTR Value 10K
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SYMBOL res 1008 960 R0
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SYMATTR InstName R11
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SYMATTR Value 10K
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TEXT 632 -128 Left 2 !.tran 1m
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BIN
infnoise_fast/infnoise_fast.tsc
Normal file
BIN
infnoise_fast/infnoise_fast.tsc
Normal file
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@@ -1,147 +0,0 @@
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Version 4
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SHEET 1 1396 1108
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WIRE 384 -64 272 -64
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WIRE 880 -64 784 -64
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WIRE 272 -32 272 -64
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WIRE -640 -16 -640 -96
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WIRE 784 -16 784 -64
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WIRE 272 80 272 48
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WIRE -640 112 -640 64
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WIRE -336 112 -640 112
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WIRE 80 112 -336 112
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WIRE 784 112 784 64
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WIRE -640 160 -640 112
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WIRE 224 240 224 224
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WIRE 80 256 80 112
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WIRE 192 256 80 256
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WIRE 400 272 256 272
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WIRE 432 272 400 272
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WIRE 1088 272 432 272
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WIRE 1104 272 1088 272
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WIRE -288 288 -384 288
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WIRE -64 288 -208 288
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WIRE 16 288 -64 288
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WIRE 128 288 16 288
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WIRE 192 288 128 288
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WIRE -640 320 -640 240
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WIRE -64 320 -64 288
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WIRE 224 336 224 304
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WIRE 976 336 768 336
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WIRE -64 432 -64 384
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WIRE 848 448 848 432
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WIRE 224 464 224 448
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WIRE 768 464 768 336
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WIRE 816 464 768 464
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WIRE 192 480 64 480
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WIRE 976 480 976 336
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WIRE 976 480 880 480
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WIRE 320 496 256 496
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WIRE 336 496 320 496
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WIRE 512 496 336 496
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WIRE 656 496 592 496
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WIRE 704 496 656 496
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WIRE 816 496 704 496
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WIRE 128 512 128 288
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WIRE 192 512 128 512
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WIRE 704 528 704 496
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WIRE 848 544 848 512
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WIRE 224 560 224 528
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WIRE 976 592 976 480
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WIRE 64 640 64 480
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WIRE 176 640 64 640
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WIRE 320 640 320 496
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WIRE 320 640 256 640
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WIRE 704 656 704 592
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WIRE 976 672 976 592
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WIRE 64 704 64 640
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WIRE 704 784 704 768
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WIRE 64 816 64 784
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WIRE 400 816 400 272
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WIRE 400 816 64 816
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WIRE -384 912 -384 288
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WIRE 32 912 -384 912
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WIRE 688 912 32 912
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WIRE 704 912 704 864
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WIRE 704 912 688 912
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WIRE 976 912 976 752
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WIRE 976 912 704 912
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WIRE 688 976 688 912
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WIRE 688 1088 688 1056
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FLAG -640 320 0
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FLAG -640 -96 Vsup
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FLAG -64 432 0
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FLAG 704 656 0
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FLAG 224 560 0
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FLAG 224 336 0
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FLAG 848 544 0
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FLAG 224 224 Vsup
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FLAG 224 448 Vsup
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FLAG 848 432 Vsup
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FLAG -272 336 CLK
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FLAG 384 -64 CLK
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FLAG -224 336 Vref
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FLAG 528 544 Vref
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FLAG 576 544 CLK
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FLAG 784 112 0
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FLAG 880 -64 Vsup
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FLAG 688 1088 0
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FLAG 704 768 Vsup
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FLAG 16 288 A
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FLAG 656 496 B
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FLAG 976 592 BUFOUT
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FLAG 32 912 AIN
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FLAG 432 272 OUT
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FLAG 1088 272 OUT
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FLAG -336 112 Vref
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FLAG 272 80 0
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FLAG 336 496 AmpOut
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SYMBOL Opamps\\LTC6088 224 272 R0
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SYMATTR InstName COMP
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SYMBOL Opamps\\LTC6088 224 496 R0
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SYMATTR InstName AMP
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SYMBOL Opamps\\LTC6088 848 480 R0
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SYMATTR InstName BUF
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SYMBOL res -656 -32 R0
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SYMATTR InstName R1
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SYMATTR Value 10K
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SYMBOL res -656 144 R0
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SYMATTR InstName R2
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SYMATTR Value 10K
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SYMBOL sw -304 288 R270
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SYMATTR InstName S1
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SYMBOL sw 496 496 R270
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SYMATTR InstName S2
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SYMBOL cap -80 320 R0
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SYMATTR InstName C1
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SYMATTR Value 100pF
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SYMBOL res 48 688 R0
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SYMATTR InstName R3
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SYMATTR Value 10K
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SYMBOL cap 688 528 R0
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SYMATTR InstName C2
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SYMATTR Value 100pF
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SYMBOL voltage 272 -48 R0
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WINDOW 123 0 0 Left 2
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WINDOW 39 0 0 Left 2
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SYMATTR InstName V1
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SYMATTR Value PULSE(0 5 1u 1n 1n 2u 4u)
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SYMBOL voltage 784 -32 R0
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WINDOW 123 0 0 Left 2
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WINDOW 39 0 0 Left 2
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SYMATTR InstName V2
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SYMATTR Value 5
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SYMBOL res 160 656 R270
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WINDOW 0 32 56 VTop 2
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WINDOW 3 0 56 VBottom 2
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SYMATTR InstName R4
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SYMATTR Value 10K
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SYMBOL res 960 656 R0
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SYMATTR InstName R7
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SYMATTR Value 47
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SYMBOL res 688 768 R0
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SYMATTR InstName R5
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SYMATTR Value 10K
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SYMBOL res 672 960 R0
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SYMATTR InstName R6
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SYMATTR Value 10K
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TEXT 480 144 Left 2 !.tran 1m
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Before Width: | Height: | Size: 42 KiB |
BIN
infnoise_small/infnoise_small.tsc
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BIN
infnoise_small/infnoise_small.tsc
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BIN
infnoise_small/longsim.png
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BIN
infnoise_small/longsim.png
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