CS3302 Datasheet | Cirrus Logic

Features Description Signal bandwidth: DC to 2 k Hz Selectable gain: x1, x2, x4, x8, x16, x32, x64 Differential inputs, differential outputs - Multiplexed inputs: INA, INB, 800Ω termination - Rough / fine charge outputs for CS5371/72 - Max signal amplitude: 5 Vp-p differential - Ultra-low input bias: < 1 p A Excellent noise performance - 1 µVp-p between 0.1 Hz and 10 Hz - 8.5 n V/ √Hz from 200 Hz to 2 k Hz Low total harmonic distortion - -118 d B THD typical (0.000126%) - -112 d B THD maximum (0.000251%) Low power consumption - Normal / LPWR / PWDN: 5 m A, 3.3 m A, 10 µA Single or dual power supply configurations - VA+ = +5 V; VA- = 0 V; VD = +3.3 V to +5 V - VA+ = +2.5 V;VA- = -2.5 V;VD = +3.3 V The CS3302 is a high input impedance differential in, differential out amplifier with programmable gain, optimized for amplifying signals from high impedance sensors such as hydrophones. The gain settings are binary weighted (x1, x2, x4, x8, x16, x32, x64) and are selected using simple pin settings. Two sets of external inputs, INA and INB, simplify system design as inputs from a sensor and test DAC. An internal 800Ω termination can also be selected for noise tests. Amplifier input impedance is very high, requiring less than 1 p A of input current. Noise performance is very good at 1 µVp-p between 0.1 Hz and 10 Hz, and a noise density of 8.5 n V/ √Hz over the 200 Hz to 2 k Hz bandwidth. Distortion performance is also extremely good, typically -118 d B THD. Low input current, low noise, and low total harmonic distortion make this amplifier ideal for high impedance differential sensors requiring maximum dynamic range. ORDERING INFORMATION CS3302-IS -40ºC to +85ºC 24-pin SSOP VA+ GUARD INA+ INB+ MUX0 MUX1 400 Ω + 570500 Ω OUTR+ - OUTF+ 57050 Ω GAIN0 GAIN1 GAIN2 400 Ω INAINB- 570500 Ω - OUTF- OUTR- + 57050 Ω VA- LPWR PWDN...