ADS8634SRGET

Analog To Digital Converters (ADC) Overview

The ADS8634SRGET is a 12-bit, 4-channel bipolar successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a high-speed sampling rate of up to 1MSPS with no latency in the conversion pipeline. The device integrates an input multiplexer, internal voltage reference, and temperature sensor, supporting software-selectable input ranges including ±10V, ±5V, ±2.5V, 0V to 10V, and 0V to 5V. It operates with an analog supply voltage range of 2.7V to 5.25V and a digital supply range of 1.65V to 5.25V, housed in a compact 4mm x 4mm QFN-24 package suitable for industrial applications.

Analog To Digital Converters (ADC) Feature Summary

• Integrated four-channel input multiplexer enabling multi-point signal acquisition within a single component.
• Software-configurable input voltage ranges allowing flexibility for various bipolar and unipolar signal types without external hardware changes.
• Built-in diagnostic capabilities including an internal temperature sensor and programmable alarm thresholds for each channel.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Programmable logic controllers (PLCs) for monitoring multiple sensor inputs.
• High-speed closed-loop control systems demanding low-latency signal processing.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'GET' corresponds to the Tape and Reel packaging configuration when ordering. Confirm that the required input voltage ranges and power supply voltages align with the system design specifications before integration. Ensure proper thermal management via the exposed pad on the QFN-24 package as specified in the datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select this model over the ADS8638 if only four analog input channels are required, as it offers a more compact pinout and potentially lower cost for 4-channel designs. Consider the integrated internal reference and alarm features if minimizing external component count is a priority. Verify compatibility with the host processor's SPI interface timing requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS8634/ADS8638 family of 12-bit SAR ADCs from Texas Instruments. The primary distinction within this series is the number of input channels; the ADS8634 provides four channels, while the ADS8638 provides eight. Both share identical performance characteristics, architecture, and peripheral integrations such as the internal reference and temperature sensor.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8638 serves as a functional alternative if additional input channels are needed, maintaining the same electrical specifications and pin-out compatibility for the shared channels. Designers should verify that the increased channel count does not impact board space or power budget constraints.