CS5373A-ISZR

ADCs/DACs - Special Purpose Overview

The CS5373A-ISZR is a low-power, high-performance fourth-order Delta-Sigma modulator integrated with a test Digital-to-Analog Converter (DAC). It converts differential analog input signals into an oversampled serial bit stream at 512 kbits per second. The device features a dynamic range of up to 136 dB and typical Total Harmonic Distortion (THD) of -118 dB. Bipolar power supplies are required: +2.5 V for VA+, -2.5 V for VA-, and +3.3 V for VD. It operates within an industrial temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• Fourth-order Delta-Sigma architecture with clock-jitter tolerance
• Integrated Test DAC with selectable attenuation ratios (1/1 to 1/64)
• High dynamic range up to 136 dB SNR at 27 Hz bandwidth
• Low total harmonic distortion of -118 dB typical

ADCs/DACs - Special Purpose Applications

• Single-channel measurement systems
• Self-testing high-accuracy data acquisition
• Electronics channel testing via OUT± outputs
• In-circuit sensor tests via BUF± outputs

ADCs/DACs - Special Purpose Procurement Notes

Verify the -ISZR suffix indicates the industrial temperature grade (-40°C to +85°C) and SSOP package configuration. Confirm compatibility with the CS5378 digital filter and CS3301A/02A differential amplifier for intended system operation. Check current availability status as distribution may be limited.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a compact, low-power solution for single-channel precision measurement is required. Ensure the design accommodates bipolar power supplies (+/- 2.5 V analog, +3.3 V digital). Verify that the 28-pin SSOP footprint fits the PCB layout constraints and that the 512 kbps output rate matches the downstream digital filter capabilities.

ADCs/DACs - Special Purpose Part Context

The CS5373A belongs to Cirrus Logic's family of high-performance analog-to-digital conversion components. It is specifically designed to work in conjunction with the CS5378 digital filter and CS3301A/02A differential amplifiers to form a complete, self-testing measurement system.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative Delta-Sigma modulators from the manufacturer only if they support identical supply voltages and pin configurations.

ADCs/DACs - Special Purpose FAQ

What is the maximum differential AC input amplitude?

The maximum differential AC input amplitude is 5 Vpp.

How many attenuation settings does the integrated Test DAC offer?

The Test DAC offers seven selectable attenuation settings: 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, and 1/64.

What is the typical THD performance of the modulator?

The typical Total Harmonic Distortion (THD) is -118 dB.