CS5376A-IQZR

Overview

The CS5376A-IQZR is a multi-channel digital decimation filter designed for geophysical and sonar applications. It supports up to four concurrent channels with selectable output word rates ranging from 4000 SPS down to 1 SPS. The device integrates cascaded SINC, FIR, and IIR filters with programmable coefficients for custom filtering. Power consumption is specified at 9 mW per channel at 500 SPS, with a standby mode of 40 µW. It operates with flexible power supplies: 3.0 V, 3.3 V, or 5.0 V for the digital logic core, and 3.3 V or 5.0 V for I/O interfaces. The component is housed in a small-footprint 64-pin TQFP package.

Feature Summary

• Supports synchronous operation for simultaneous sampling across multiple sensor channels.
• Includes integrated peripherals such as a test bit stream generator, time break controller, and general-purpose I/O pins.
• Allows configuration via microcontroller interface or standalone boot EEPROM for fixed operational settings.

Applications

• Geophysical measurement systems
• Sonar signal processing
• Multi-channel data acquisition

Procurement Notes

Verify the specific suffix IQZR against manufacturer documentation to confirm package type and tape-and-reel specifications. Confirm that the component meets all required environmental operating conditions for your intended deployment environment before finalizing procurement.

Selection Notes

Select this component when designing systems requiring low-power, high-resolution digital filtering for delta-sigma modulators. Ensure the design accommodates the necessary power supply rails and utilizes the SPI interface for configuration management.

Part Context

This component belongs to the Cirrus Logic CS5376 family of digital decimation filters. It is typically paired with CS3301A/CS3302A differential amplifiers and CS5371A/CS5372A delta-sigma modulators to form complete measurement systems.

Replacement Considerations

Consult official datasheets for cross-reference information. Verify pin compatibility and register mapping if substituting with other models in the CS5376 series.

FAQ

What are the available output word rates?

The CS5376A provides standard rates of 4000, 2000, 1000, 500, 333, and 250 SPS, as well as low bandwidth rates of 200, 125, 100, 50, 40, 25, 20, 10, 5, and 1 SPS.

How is the device configured?

Configuration can be performed 'on-the-fly' via a microcontroller using the SPI 1 interface, or by setting a fixed configuration using a stand-alone boot EEPROM.