ADS1213E/1K

Overview

The Texas Instruments ADS1213E/1K is a high-resolution, 22-bit analog-to-digital converter (ADC) utilizing sigma-delta architecture. It integrates a programmable gain amplifier and a multiplexer to support four differential or eight single-ended input channels. The device operates with a maximum sampling rate of 6.25 kilohertz and communicates via a standard SPI-compatible digital interface. It requires dual 5V power supplies for analog and digital sections. The component is housed in a 24-pin SOIC package and is rated for an industrial operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a low-noise programmable gain amplifier with selectable gain settings to optimize signal conditioning for small input signals.
• Includes an internal on-chip reference voltage source to simplify system design and reduce external component count.
• Features a built-in multiplexer allowing flexible configuration of multiple differential or single-ended input channels.

Applications

• Industrial process control systems requiring high-precision measurement
• Weigh scales and load cell interfaces
• Medical instrumentation such as ECG and blood pressure monitors
• High-resolution data acquisition modules

Procurement Notes

Verify the specific suffix 'E/1K' against the manufacturer's current datasheet to confirm package type and tape-and-reel quantity specifications. Ensure compatibility with existing SPI logic levels and verify that the 5V supply requirements align with the target system design before finalizing procurement orders.

Selection Notes

Select this component when 22-bit resolution and low noise performance are critical for measuring small differential signals. Compare against the ADS1212 if only two input channels are required. Verify that the 6.25 kSPS maximum data rate meets the application's throughput needs and that the 24-SOIC package fits the available PCB footprint constraints.

Part Context

The ADS1213E/1K belongs to the ADS121x family of precision ADCs from Texas Instruments. This series is designed for applications demanding high accuracy and low drift. The '/1K' suffix typically indicates a specific packaging variant, often a tape and reel quantity of 1000 units, distinguishing it from tube-packaged versions like the ADS1213U.

Replacement Considerations

The ADS1212 serves as a direct functional substitute for designs requiring fewer input channels. For pin-compatible alternatives within the same family, check the ADS1211 for reduced channel counts. Verify electrical parameters and software compatibility when migrating between these related part numbers.