ZHCSGB7A June 2017 – November 2017 OPA1641-Q1 , OPA1642-Q1
PRODUCTION DATA.
The transfer function of the microphone preamplifier circuit is shown in Figure 38. The nominal gain of the circuit is 95.46 dB, or 59,292.5 V per amp of input current. The –3-dB bandwidth limits of the circuit are 105.7 Hz and 2.77 kHz.