ADS7861E/2K5

Analog To Digital Converters (ADC) Overview

The ADS7861E/2K5 is a dual-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It supports a sampling rate of 500 kSPS with simultaneous sampling capability for both channels. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and features a flexible serial interface compatible with standard SPI, QSPI, and MICROWIRE protocols. Packaged in a 24-pin SSOP, it integrates an internal reference and clock, reducing external component count.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel architecture enabling simultaneous sampling of two independent analog inputs
• Integrated 12-bit SAR ADC core with high-speed conversion capabilities
• Flexible digital interface supporting multiple serial communication standards
• Internal voltage reference and oscillator minimize external circuit requirements

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel data acquisition
• Portable instrumentation and battery-powered measurement devices
• Data acquisition modules for automated test equipment
• Medical monitoring equipment needing precise analog signal digitization

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '2K5' indicates tape-and-reel packaging containing 2,500 units per reel when ordering. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments. Ensure the procurement channel provides original manufacturer documentation to guarantee part authenticity and traceability.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous sampling of two channels is required at 12-bit resolution. Compare against single-channel alternatives if only one input is needed. Verify that the 500 kSPS speed meets system bandwidth requirements. Check interface compatibility with the host microcontroller's serial peripheral interface before finalizing the design.

Analog To Digital Converters (ADC) Part Context

The ADS7861 belongs to Texas Instruments' broader family of high-speed SAR ADCs. It shares architectural similarities with the ADS7862 and ADS7863 but differs in pin count and specific performance metrics. The E/2K5 designation specifies the industrial temperature range variant packaged in reels for surface-mount assembly.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7862 offers similar functionality but may differ in pinout or package dimensions. The ADS7863 provides higher sampling rates but requires different interface considerations. Verify electrical specifications and mechanical footprints before substituting these parts in existing designs.