Description
The CS5373A is a high-performance, fourth-order ∆Σ modulator integrated with a ∆Σ digital-to-analog converter (DAC). When combined with a CS3301A / CS3302A differential amplifier and the CS5378 digital filter, a small, low-power, self-testing, high-accuracy, single-channel measurement system results.

Modulator Features
● Fourth-order ∆Σ Architecture
    • Clock-jitter-tolerant architecture
    • Input signal bandwidth: DC to 2 kHz
    • Max AC amplitude: 5 Vpp differential
    • Max DC amplitude: ± 2.5 Vdc differential
● 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%)
    • -112 dB THD maximum (0.000251%)
● Low Power Consumption: 25 mW, 10 µW

Test DAC Features
● Digital ∆Σ Input from CS5378 Digital Filter
● Selectable Differential Analog Outputs
    • Precision output (OUT±) for electronics tests
    • Buffered output (BUF±) for sensor tests
● Multiple AC and DC Operational Modes
    • Output signal bandwidth: DC to 100 Hz
    • Max AC amplitude: 5 Vpp differential
    • Max DC amplitude: + 2.5 Vdc differential
● Selectable Attenuation for CS3301A / CS3302A
    • 1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64
● Outstanding Performance
    • AC (OUT): -116 dB THD typical, -112 dB max
    • AC (BUF): -108 dB THD typical, -90 dB max
    • DC absolute accuracy: 0.4% typical, 1% max
● Low Power Consumption
    • AC modes / DC modes: 40 mW / 20 mW
    • Sleep mode / Power down: 1 mW / 10 µW

Common Features
● Extremely Small Footprint
    • 28-pin SSOP package, 8 mm x 10 mm
● Bipolar Power Supply Configuration
    • VA+ = +2.5 V; VA- = -2.5 V; VD = +3.3 V