CS5378-ISZR

Overview

The CS5378-ISZR is a single-channel digital decimation filter designed for seismic and measurement applications. It operates with a 28-pin SSOP package and supports flexible power supplies, including 3.3 V or 5.0 V for I/O and PLL, and 2.5 V, 3.3 V, or 5.0 V for the digital logic core. The device features selectable output word rates ranging from 4000 SPS down to 1 SPS. Power consumption is specified at 16 mW at 500 SPS OWR, with a standby mode of 100 μW.

Feature Summary

• Integrates cascaded SINC, FIR, and IIR filters with programmable coefficients for custom response shaping.
• Includes an integrated low-jitter PLL supporting standard clock or Manchester encoded inputs.
• Provides a test bit stream generator capable of producing sine wave outputs for system testing.
• Supports configuration via microcontroller SPI interface or standalone boot EEPROM.

Applications

• Single-channel seismic acquisition nodes
• High-resolution self-testing measurement systems
• Multi-sensor synchronous sampling systems

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices prior to procurement. Ensure supply chain stability as availability may be restricted.

Selection Notes

Select this component when a single-channel decimation filter with integrated clock generation is required. Consider the specific voltage requirements for the logic core versus I/O interfaces. Evaluate the need for programmable FIR/IIR coefficients against fixed on-chip sets.

Part Context

The CS5378 functions as the digital filtering stage in a complete signal chain, typically paired with the CS3301A/02A differential amplifier and CS5373A delta-sigma modulator. This combination forms a high-resolution, self-testing single-channel measurement system.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

FAQ

What input frequencies does the integrated PLL support?

The integrated PLL accepts 1.024 MHz, 2.048 MHz, or 4.096 MHz inputs in either standard clock or Manchester encoded formats.

How is the device configured during operation?

Configuration can be performed 'on-the-fly' via a microcontroller using standardized SPI registers, or set to a fixed operational state via a stand-alone boot EEPROM.

What types of digital filters are included on-chip?

The device includes cascaded SINC, FIR, and IIR filters. On-chip coefficients include linear and minimum phase FIR low-pass filters and a 3 Hz Butterworth IIR high-pass filter.