ADS131A04IPBS

Analog Front End (AFE) Overview

The ADS131A04IPBS is a Texas Instruments analog front-end (AFE) featuring four simultaneous-sampling, 24-bit Delta-Sigma analog-to-digital converters. It operates with an SPI interface and supports data rates up to 128 kSPS. The device utilizes a sigma-delta architecture with differential inputs and includes an integrated negative charge pump for input voltage flexibility. Power consumption is specified at 1.2 mW, with analog supply voltages ranging from 3 V to 5.5 V and digital supplies from 1.65 V to 3.6 V. Key performance metrics include a gain error of +/- 0.03% and integral nonlinearity of +/- 7.5 LSB.

Analog Front End (AFE) Feature Summary

• Four-channel simultaneous sampling with 24-bit resolution at 128 kSPS
• Integrated negative charge pump allowing absolute input voltages below ground
• Low power consumption of 1.2 mW with high precision (gain error +/- 0.03%)
• Flexible power options supporting single-supply (3.3V-5.5V), dual-supply, or negative charge pump operation

Analog Front End (AFE) Applications

• High-resolution industrial process control systems
• Medical instrumentation requiring precise signal acquisition
• Seismic data acquisition and geophone interfaces
• Multi-channel data logging applications

Analog Front End (AFE) Procurement Notes

Verify the specific package variant, as the IPBS suffix denotes a TQFP-32 tray package. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly line. Ensure the ordering suffix matches the exact pinout and packaging format required by your PCB design and manufacturing equipment specifications.

Analog Front End (AFE) Selection Notes

Select this component when four synchronized channels are required for high-precision measurements. The integrated charge pump simplifies hardware design for signals swinging below ground. Compare against the ADS131M04 if lower speed (32/64 kSPS) is acceptable but different packaging or internal reference configurations are preferred. Verify that the 128 kSPS maximum rate aligns with your system bandwidth needs.

Analog Front End (AFE) Part Context

This part belongs to the ADS131A0x family of 24-bit AFEs, which also includes the dual-channel ADS131A02. It shares architectural similarities with the ADS131M08 and ADS131M04 series but offers higher throughput and specific analog front-end features like the charge pump. The IPBS package provides a compact surface-mount solution suitable for dense circuit board layouts.

Analog Front End (AFE) Replacement Considerations

The ADS131A04IPBSR is the reel-pack equivalent of this tray-part. For channel count variations, consider the ADS131A02 (2-channel). If internal reference or different speed grades are needed, evaluate the ADS131M04 or ADS131M08, noting differences in power supply ranges and integrated features.