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Download 3-V Accelerometer Featuring TLV2772
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3-V Accelerometer Featuring TLV2772 VDD U1A 8 3 + VDD C1 VDD VREF ACH–04–05–08 Model 0.22 µF R2 1 Meg FN4117A 1.23 V 3V TLV2772 2 R3 4 0 0 0 VREF R1 100 kΩ 10 kΩ VREF 1 1 kΩ – Vs 10 Meg Vadc R5 R4 C3 0.22 µF 0 100 kΩ C2 2.2 nF Figure 4–9. SPICE Simulation Schematic The SPICE simulations show agreement with the hand calculations and the bode plot approximations. The analyses above do not consider the frequency response of the shock sensor, which falls off below 0.5 Hz and above 5 kHz. The data sheet for the ACH-04-08-05 does not specify the role-off characteristics of the shock sensor’s frequency response, but in general it is expected that there will be more attenuation in the signal below 0.5 Hz and above 5 kHz. Figure 4–10. SPICE Simulation Results 13
