Cirrus Logic, Inc. Hydrophone Low Noise, Programmable Gain Differential Amplifier CS3302A

Delivering low noise, high performance, and a small footprint, the CS3302A seismic amplifier is designed for use with hydrophone sensors. This highly integrated, programmable gain differential amplifier is engineered for precise low frequency, high dynamic range measurements. Based on Cirrus Logic’s patented Multipath™ amplifier architecture, this powerful amplifier provides unrivaled noise and drift performance. Low power consumption combined with outstanding THD performance makes them ideal for today’s seismic applications. The high input impedance of the CS3302A makes it well suited for use with hydrophone sensors, while still delivering outstanding noise and drift performance. With an extensive feature set and available in a 24-pin SSOP package, this amplifier provides an outstanding price/performance combination for seismic applications. Features Signal bandwidth: DC to 2 kHz Differential inputs, differential outputs Multiplexed inputs: INA, INB, 800 ω termination Max signal amplitude: 5 Vp-p differential High performance Outstanding 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 input bias: <1 pA Low drift: 0.05 µV/°C max Low-power consumption Normal/PWDN: 5 mA, 10 µA High integration Pin-selectable gain: x1, x2, x4, x8, x16, x32, x64 Dual power supply configuration VA+ = +2.5 V; VA- = -2.5 V; VD = +3.3 V Available in a 24-pin SSOP package