Description
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.

FEATUREs
● Signal bandwidth: DC to 2 kHz
● 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 pA
● Excellent noise performance
    • 1 µVp-p between 0.1 Hz and 10 Hz
    • 8.5 nV/ √Hz from 200 Hz to 2 kHz
● Low total harmonic distortion
    • -118 dB THD typical (0.000126%)
    • -112 dB THD maximum (0.000251%)
● Low power consumption
    • Normal / LPWR / PWDN: 5 mA, 3.3 mA, 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