Advanced Test Setup Circuit for Signal Processing Analysis
Explore the detailed test setup circuit diagram involving various components like VCVS, Digital Filter, and specific register settings. The setup aims to analyze input signals at different frequencies and amplitudes accurately, utilizing equipment such as the ADS1298RECGFE-PDK. View sample outputs and frequency responses for a comprehensive understanding.
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Presentation Transcript
Test Setup Circuit Diagram Vcc RLDOUT AVDD 2.5 + + S3a VCVS1 500m - - V1 300m AVSS -2.5 Vee Vee S2 S3b S1 Digital Filter -3 dB BW f-3dB = 262 Hz @ 1 kSPS EUT C1 4.7n R11 10k R5 22k R6 10k R2 1k VCVS2 1 R3 622.4k R4 100k + + S4 C5 47p C2 47p - - S C4 303.73n R1 102.88 + + Zin 500M V V + VM1 VM2 VIN R13 10k R7 22k R8 10k R10 1k VCVS3 1 + + C7 47p C3 47p - - R12 51k RLDOUT C6 47n TI Confidential NDA Restrictions 1
Test Setup Notes Input Amplitude: 8 VPP Input Frequency: 10 Hz, 40 Hz, 100 Hz Input Source: Audio Precision, Unbalanced GND output Samples Collected: 4,096 Expected Output: 8 VPP * [102.88 / (102.88 + 100k)] = 8.22 mVPP Hardware: ADS1298RECGFE-PDK TI Confidential NDA Restrictions 2
Test Setup Register Settings TI Confidential NDA Restrictions 3
S2 closed, 10 Hz, 8.23 mVPP CH1 0.0045 CH2 CH3 0.004 CH4 0.0035 CH5 CH6 0.003 CH7 0.0025 CH8 0.002 0.0015 0.001 0.0005 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 -0.0045 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 Sample (Time) TI Confidential NDA Restrictions 4
S2 closed, 10 Hz, -39.75 dB 0.0 CH1 -10.0 CH2 CH3 -20.0 CH4 -30.0 CH5 -40.0 CH6 -50.0 CH7 -60.0 CH8 -70.0 -80.0 -90.0 -100.0 -110.0 -120.0 -130.0 -140.0 -150.0 -160.0 -170.0 -180.0 0 500m 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 Frequency (Hz) TI Confidential NDA Restrictions 5
S2 closed, 40 Hz, 8.16 mVPP CH1 0.0045 CH2 CH3 0.004 CH4 0.0035 CH5 CH6 0.003 CH7 0.0025 CH8 0.002 0.0015 0.001 0.0005 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 -0.0045 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Sample (Time) TI Confidential NDA Restrictions 6
S2 closed, 40 Hz, -39.83 dB 0.0 CH1 -10.0 CH2 CH3 -20.0 CH4 -30.0 CH5 -40.0 CH6 -50.0 CH7 -60.0 CH8 -70.0 -80.0 -90.0 -100.0 -110.0 -120.0 -130.0 -140.0 -150.0 -160.0 -170.0 -180.0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 Frequency (Hz) TI Confidential NDA Restrictions 7
S2 closed, 100 Hz, 7.83 mVPP CH1 0.004 CH2 CH3 0.0035 CH4 0.003 CH5 CH6 0.0025 CH7 CH8 0.002 0.0015 0.001 0.0005 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Sample (Time) TI Confidential NDA Restrictions 8
S2 closed, 100 Hz, -40.19 dB 0.0 CH1 -10.0 CH2 CH3 -20.0 CH4 -30.0 CH5 -40.0 CH6 -50.0 CH7 -60.0 CH8 -70.0 -80.0 -90.0 -100.0 -110.0 -120.0 -130.0 -140.0 -150.0 -160.0 -170.0 -180.0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 Frequency (Hz) TI Confidential NDA Restrictions 9
S2 open, 10 Hz, 8.22 mVPP CH1 0.0045 CH2 CH3 0.004 CH4 0.0035 CH5 CH6 0.003 CH7 0.0025 CH8 0.002 0.0015 0.001 0.0005 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 -0.0045 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 Sample (Time) TI Confidential NDA Restrictions 10
S2 open, 10 Hz, -39.76 dB 0.0 CH1 -10.0 CH2 CH3 -20.0 CH4 -30.0 CH5 -40.0 CH6 -50.0 CH7 -60.0 CH8 -70.0 -80.0 -90.0 -100.0 -110.0 -120.0 -130.0 -140.0 -150.0 -160.0 -170.0 -180.0 0 500m 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 Frequency (Hz) TI Confidential NDA Restrictions 11
S2 open, 40 Hz, 8.45 mVPP CH1 0.0045 CH2 CH3 0.004 CH4 0.0035 CH5 CH6 0.003 CH7 0.0025 CH8 0.002 0.0015 0.001 0.0005 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 -0.0045 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Sample (Time) TI Confidential NDA Restrictions 12
S2 open, 40 Hz, -39.52 dB 0.0 CH1 -10.0 CH2 CH3 -20.0 CH4 -30.0 CH5 -40.0 CH6 -50.0 CH7 -60.0 CH8 -70.0 -80.0 -90.0 -100.0 -110.0 -120.0 -130.0 -140.0 -150.0 -160.0 -170.0 -180.0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 Frequency (Hz) TI Confidential NDA Restrictions 13
S2 open, 100 Hz, 9.17 mVPP CH1 0.005 CH2 CH3 0.0045 CH4 0.004 CH5 0.0035 CH6 CH7 0.003 CH8 0.0025 0.002 0.0015 0.001 0.0005 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 -0.0045 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Sample (Time) TI Confidential NDA Restrictions 14
S2 open, 100 Hz, -38.81 dB 0.0 CH1 -10.0 CH2 CH3 -20.0 CH4 -30.0 CH5 -40.0 CH6 -50.0 CH7 -60.0 CH8 -70.0 -80.0 -90.0 -100.0 -110.0 -120.0 -130.0 -140.0 -150.0 -160.0 -170.0 -180.0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 Frequency (Hz) TI Confidential NDA Restrictions 15
