II II TAA970 MICROPHONE AMPLIFIER •The TAA970 is a monolithic integrated microphone amplifier for use in telephone systems.
It is compatible with both piezo-electric and dynamic microphones of suitable impedance and sensitivity, Special features are: - almost constant voltage gain and d.
c.
voltage drop with supply current variations of 10 to 100 rnA.
I - output voltage before limiting: 1 V (r.
m.
s.
value) - operation is independent of supply voltage polarity - gain can be set to either of two values - only one external capacitor required - output impedance determined by internal feed back Supply current QUICK REFERENCE DATA I2Supply voltage drop at ± = 50 rnA Voltage gain pin 9 not co...

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