ADS1211E

Overview

The ADS1211E is a 24-bit analog-to-digital converter (ADC) from Texas Instruments, utilizing sigma-delta architecture. It features four differential input channels and supports data rates up to 16 kSPS. The device operates on a single 5V supply with an operating temperature range of -40°C to +85°C. Key electrical parameters include a maximum linear error of 0.0015% FSR and a power dissipation of 60 mW. It integrates a programmable gain amplifier (PGA) and an internal reference, housed in a 24-SOIC package.

Feature Summary

• Integrates a 24-bit sigma-delta ADC with four differential inputs and a built-in PGA for signal conditioning.
• Supports flexible digital interfaces including SPI, I2C, and 3-wire modes for system integration.
• Includes an internal voltage reference and low-power operation suitable for battery-driven applications.

Applications

• Industrial process control systems requiring high-resolution data acquisition.
• Weigh scales and load cell measurement instrumentation.
• Medical equipment such as ECG and physiological monitoring devices.

Procurement Notes

Verify the specific suffix 'E' against the manufacturer's official datasheet to confirm it denotes the standard commercial grade variant within the ADS1211 family. Ensure compatibility with the required 24-SOIC footprint and check for RoHS compliance status in current production notices before procurement.

Selection Notes

Select this component when a 24-bit resolution and four differential channels are required in a compact SOIC package. It is suitable for designs needing integrated PGA and reference functions to reduce external component count. Verify that the 16 kSPS maximum data rate meets the application's throughput requirements.

Part Context

The ADS1211E belongs to the ADS121x series of precision analog-to-digital converters. This family is designed for applications demanding high accuracy and low noise. The 'E' suffix typically indicates the commercial temperature grade version, distinguishing it from extended or industrial variants within the same product line.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the ADS1210 and ADS1212, which offer similar architectures but may differ in channel count or specific interface configurations. Verify functional equivalence regarding PGA settings and reference options before substitution.