ADS7138IRTER

Analog To Digital Converters (ADC) Overview

The ADS7138IRTER is an 8-channel, multiplexed, 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a small 3-mm × 3-mm WQFN-16 package and communicates via an I2C-compatible interface supporting up to 3.4 MHz in high-speed mode. The device operates with an analog supply voltage (AVDD) ranging from 2.35 V to 5.5 V and a digital supply voltage (DVDD) from 1.65 V to 5.5 V. It includes an internal oscillator, programmable averaging filters for 16-bit resolution output, and built-in cyclic redundancy check (CRC) for data integrity. The operating temperature range spans from -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Eight channels independently configurable as analog inputs, digital inputs, or digital outputs
• Built-in digital window comparator with programmable thresholds and event counters for analog watchdog functionality
• Integrated CRC module for verifying data read/write operations and power-up configuration integrity
• Programmable averaging filter providing enhanced 16-bit resolution output through oversampling

Analog To Digital Converters (ADC) Applications

• Automotive center information displays
• Mobile robot CPU boards
• Rack servers
• Intra-DC interconnect (metro)

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IRTER' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the component meets RoHS compliance standards and matches the intended thermal performance metrics for the target PCB layout. Ensure the ordering documentation aligns with the manufacturer's current production data specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an I2C interface is preferred over SPI for system integration. Choose the ADS7138IRTER if GPIO expansion capabilities are needed alongside analog signal acquisition. Consider the wide supply voltage ranges and integrated averaging filter for applications requiring robust noise immunity and flexible power architectures without external reference components.

Analog To Digital Converters (ADC) Part Context

The ADS7138 belongs to the ADS7138 family of 12-bit ADCs. Unlike the ADS7128, it lacks zero-crossing detection and RMS modules but retains the compact form factor and GPIO flexibility. The 'IRTER' designation indicates the industrial temperature grade variant packaged in a reel format suitable for surface-mount technology manufacturing lines.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7138IRTET serves as the cut-tape alternative within the same package and specification set.