CS5373A

www.DataSheet4U.com CS5373A Low-power, High-performance ∆Σ Modulator and Test DAC Modulator Features z 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 z High Dynamic Range 127 dB SNR @ 215 Hz BW (2 ms sampling) 124 dB SNR @ 430 Hz BW (1 ms sampling) z Low Total Harmonic Distortion -118 dB THD typical (0.000126%) -112 dB THD maximum (0.000251%) z Low Power Consumption: 25 mW, 10 µW 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, singlechannel measurement system results. The modulator has high dynamic range and low total harmonic distortion with very low power consumption. It converts differential analog input signals from the CS3301A / CS3302A amplifier to an oversampled serial bit stream at 512 kbits per second. This oversampled bit stream is then decimated by the CS5378 digital filter to a 24-bit output at the selected output word rate. The test DAC operates in either AC or DC test modes. AC test modes measure system dynamic performance through THD and CMRR tests while DC test modes are for gain calibration and pulse tests. It has two sets of differential analog outputs, OUT and BUF, as dedicated outputs for te...