ADS8694IDBTR

Analog To Digital Converters (ADC) Overview

The ADS8694IDBTR is an 18-bit, high-speed successive approximation register (SAR) analog-to-digital converter from Texas Instruments. It features four single-ended input channels and operates at a sampling rate of 500 kSPS. The device utilizes a single 5-V analog supply and supports digital I/O voltages ranging from 1.65 V to 5 V. It integrates a low-drift 4.096-V reference and offers software-programmable bipolar and unipolar input ranges. The component employs a Multispan interface for daisy-chain connectivity and functions within an extended industrial temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 18-bit SAR ADC with an analog front-end and programmable input ranges.
• Provides constant resistive input impedance exceeding 1 MΩ with overvoltage protection up to ±20 V.
• Supports Multispan serial interface allowing multiple devices to be connected in a daisy-chain configuration.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Medical equipment data acquisition
• Factory automation monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix IDBTR corresponds to the TSSOP-28 package and reel packaging format. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Ensure the ordering part number matches the required tape-and-reel quantity specifications defined by the manufacturer.

Analog To Digital Converters (ADC) Selection Notes

Select this component when 18-bit resolution and 500-kSPS throughput are required for four-channel applications. Consider the integrated reference and programmable input ranges to simplify external circuitry. Evaluate the Multispan interface requirements if multiple converters must share a single microcontroller bus line.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS869x family of 18-bit SAR ADCs, which includes variants with different channel counts and sampling speeds such as the ADS8691 and ADS8695. The ADS8694 specifically targets applications requiring moderate speed with high precision. It shares architectural similarities with the ADS8664 and ADS8674 series but offers enhanced input flexibility.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8698IDBT serves as a compatible alternative within the same family, offering eight channels and a 500-kSPS sampling rate in a 38-TSSOP package. Designers must account for pin count differences and potential layout adjustments when substituting between these models.