ADS7861EB/2K5G4

Analog To Digital Converters (ADC) Overview

The ADS7861EB/2K5G4 is a dual-channel, 12-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It features simultaneous sampling at a rate of 500 kSPS per channel, utilizing a successive approximation register (SAR) architecture. The device integrates a high-speed sample-and-hold circuit and a versatile serial interface compatible with standard SPI and QSPI protocols. It operates from a single 5-V supply, drawing low power during conversion. The component is housed in a 24-pin SSOP package, designed for applications requiring precise, synchronized data acquisition from two independent analog inputs.

Analog To Digital Converters (ADC) Feature Summary

• Simultaneous sampling capability ensures accurate phase relationship between two input channels without time-skew errors.
• Integrated multiplexer and sample-and-hold circuits reduce external component count and simplify board layout.
• Flexible serial interface supports multiple communication standards including SPI, QSPI, and Microwire for easy microcontroller integration.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring isolated channel monitoring
• Medical instrumentation such as ECG and patient monitoring devices
• Data acquisition systems for vibration analysis and acoustic testing

Analog To Digital Converters (ADC) Procurement Notes

Verify the suffix G4 indicates RoHS compliance and lead-free manufacturing status according to Texas Instruments documentation. Confirm the /2K5 designation corresponds to the specified reel quantity for tape-and-reel packaging. Ensure the EB variant matches the required temperature grade and package dimensions before procurement to avoid assembly mismatches.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous sampling of two channels is critical to maintain signal integrity. Compare against the ADS7863 if higher speed is needed or the ADS7862 if differential inputs are required. Verify that the 12-bit resolution and 500 kSPS rate meet the system's dynamic range and bandwidth requirements without excessive oversampling.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS786x family of dual-channel ADCs from Texas Instruments. It shares architectural similarities with the ADS7862 and ADS7863 but differs in input configuration and sampling speed. The family targets cost-sensitive, medium-speed data acquisition applications where channel synchronization is more important than maximum throughput.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7862E/2K5G4 offers similar performance but supports differential inputs instead of single-ended. The ADS7863 provides higher sampling rates but may require different power management. Verify pin compatibility and software register settings when substituting these variants in existing designs.