ADS124S08IPBSR

Overview

The ADS124S08IPBSR is a 24-bit, low-power, low-noise delta-sigma analog-to-digital converter (ADC) featuring 12 input channels. It operates with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply voltage range of 2.7 V to 3.6 V. The device supports a maximum sampling rate of 4 kSPS and utilizes an SPI interface for data communication. It is housed in a TQFP-32 package and functions within a temperature range of -50°C to +125°C. Key integrated features include a programmable gain amplifier (PGA), internal oscillator, excitation current sources (iDACs), general-purpose I/O (GPIO), and a temperature sensor.

Feature Summary

• Integrates 12-channel multiplexer with programmable gain amplifier for flexible signal conditioning
• Includes built-in excitation current sources (iDACs) for direct sensor excitation
• Provides hardware-reject capability for 50 Hz and 60 Hz power line interference
• Combines multiple system functions including GPIO, oscillator, and temperature sensor on a single chip

Applications

• Industrial process control systems requiring multi-channel precision measurement
• Weigh scales and load cell interfaces
• Thermocouple and RTD temperature measurement modules
• Medical instrumentation such as blood pressure monitors and pulse oximeters

Procurement Notes

Verify the specific suffix IPBSR corresponds to the TQFP-32 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure that the selected distributor provides valid traceability records for the component batch. Cross-reference the ordering part number against the latest Texas Instruments datasheet to avoid discrepancies in pinout or electrical specifications.

Selection Notes

Select this component when high channel count and resolution are required without external multiplexers. The integrated iDACs simplify designs involving resistive sensors like RTDs. Consider the 4 kSPS limit if higher throughput is needed, opting for faster family members instead. Verify that the TQFP-32 package fits the thermal and spatial constraints of the target PCB layout compared to QFN alternatives.

Part Context

This device belongs to the ADS124S0x series of low-power, highly integrated ADCs from Texas Instruments. It shares architectural similarities with the ADS124S06 but offers double the channel count. The series is designed to reduce system component count by integrating signal chain elements typically found in discrete solutions. It complements other TI data converters like the ADS131E08 for different performance tiers.

Replacement Considerations

ADS124S08IPB: Non-reel version of the same TQFP-32 package. ADS124S08IRHBT: QFN-32 package variant with identical electrical characteristics.