ADS1213P

Overview

The ADS1213P is a 22-bit analog-to-digital converter manufactured by Texas Instruments, utilizing sigma-delta architecture. It features a single differential input channel and an integrated programmable gain amplifier (PGA) with gains up to 128. The device operates on a single 5V supply and communicates via a standard SPI-compatible serial interface. Key performance specifications include a maximum data rate of 20 kSPS and low power consumption of 4 mW. It supports both internal and external reference options and includes built-in excitation current sources for sensor biasing.

Feature Summary

• Integrated 22-bit sigma-delta ADC with programmable gain amplifier
• Built-in excitation current sources for bridge sensor biasing
• SPI-compatible digital interface for microcontroller connectivity

Applications

• Industrial process control systems
• Weigh scales and load cell measurements
• High-resolution temperature monitoring

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment upon receipt. Check for RoHS compliance markings consistent with the specific manufacturing lot. Ensure storage conditions meet moisture sensitivity level requirements before soldering.

Selection Notes

Select this component when high resolution and low noise are required for single-channel applications. Consider the PGA range if signal conditioning is needed. Verify that the 20 kSPS speed meets system timing requirements. Ensure the 5V supply voltage aligns with the target board design.

Part Context

This part belongs to the ADS121x family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS1210 and ADS1211 but offers higher resolution at the cost of lower maximum data rates. It serves as a specialized solution for applications requiring precise DC measurements without complex external circuitry.

Replacement Considerations

Direct replacements may include the ADS1210 or ADS1211 from the same family, though data rates and resolution differ. Evaluate pin compatibility and register mapping before substitution. Alternative manufacturers may offer similar sigma-delta converters but require interface verification.