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OPA2347UA Datasheet(PDF) 10 Page - Texas Instruments |
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OPA2347UA Datasheet(HTML) 10 Page - Texas Instruments |
10 / 33 page OPA347, 2347, 4347 10 SBOS167D www.ti.com FIGURE 8. OPA347 in Noninverting Configuration Driving ADS7822. FIGURE 9. Speech Bandpass Filtered Data Acquisition System. ADS7822 12-Bit ADC DCLOCK D OUT CS/SHDN OPA347 +5V V IN V+ 2 +In 3 –In V REF 8 4 GND Serial Interface 1 0.1 µF 0.1 µF 7 6 5 NOTE: ADC Input = 0V to V REF V IN = 0V to 5V for 0V to 5V output. RC network filters high-frequency noise. 500 Ω 3300pF C 3 33pF V+ GND 3 1 8 4 5 6 7 –IN +IN 2 DCLOCK Serial Interface C 2 1000pF R 1 1.5k Ω R 4 20k Ω R 5 20k Ω R 6 100k Ω R 8 150k Ω R 9 510k Ω R 7 51k Ω D OUT V REF V+ = +2.7V to 5V CS/SHDN C1 1000pF Electret Microphone(1) G = 100 Passband 300Hz to 3kHz R 3 1M Ω R 2 1M Ω NOTE: (1) Electret microphone powered by R 1. ADS7822 12-Bit A/D 1/2 OPA2347 1/2 OPA2347 |
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