Description

The CS5371A and CS5372A are one- and two-channel, high-dynamic-range, fourth-order ΔΣ modulators intended for geophysical and sonar applications. When combined with CS3301A / CS3302A differential amplifiers, the CS4373A test DAC and CS5376A digital filter, a small, low-power, self-testing, high-accuracy, multichannel measurement system results.

Features

❐ Fourth-order ΔΣ Architecture

❐ Clock-jitter-tolerant Architecture

❐ Input Voltage: 5 Vpp Fully Differential

❐ Input Signal Bandwidth: DC to 2 kHz

❐ High Dynamic Range

• 127 dB SNR @ 215 Hz BW (2 ms sampling)

• 124 dB SNR @ 430 Hz BW (1 ms sampling)

❐ Low Total Harmonic Distortion

• -118 dB THD typical (0.000126)

❐ Low Power Consumption

• Normal operation: 25 mW per channel

• Power down: 10 µW per channel

❐ Small Footprint, 24-pin SSOP package

❐ Multi-channel System Support

• 1-channel System: CS5371A

• 2-channel System: CS5372A

• 3-channel System: CS5371A + CS5372A

• 4-channel System: CS5372A + CS5372A

❐ Bipolar Power Supply Configuration

• VA+ = +2.5 V; VA- = -2.5 V; VD = +3.3 V