ADS9817RSHT

Analog To Digital Converters (ADC) Overview

The ADS9817RSHT is an 8-channel, 18-bit dual simultaneous-sampling analog-to-digital converter (ADC) from Texas Instruments. It features a complete integrated analog front-end with constant 1MΩ input impedance and programmable gain amplifiers. The device supports sampling rates up to 2 MSPS per channel with a total power dissipation of 232 mW at maximum throughput. It operates on 5V analog and 1.8V digital supplies, providing ±12V common-mode voltage range and input overvoltage protection up to ±18V. The component utilizes an SPI interface for configuration and data output.

Analog To Digital Converters (ADC) Feature Summary

• Dual simultaneous sampling architecture supporting four pairs of channels
• Integrated analog front-end with user-selectable bandwidth options
• Built-in precision reference voltages for ADC and external circuits
• High input impedance allowing direct sensor connection without drivers

Analog To Digital Converters (ADC) Applications

• Parametric measurement units (PMU)
• Battery cell formation and test equipment
• Data acquisition (DAQ) systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix RSHT corresponds to the VQFN-56 package variant when sourcing. Confirm that the internal reference configuration matches system requirements, as the REFIO pin can also accept external references. Ensure supply voltages remain within the recommended operating conditions to maintain specified linearity and noise performance across the industrial temperature range.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS9817RSHT when high channel count and precise synchronization are required. Compare against the ADS9815 if lower throughput meets system needs, as it offers reduced power consumption. Consider the available input ranges and bandwidth settings to ensure compatibility with the signal source characteristics. Verify thermal management capabilities given the junction-to-ambient resistance specifications.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS981x family of high-performance data acquisition systems. It shares architectural similarities with the ADS9815 but provides higher sampling speeds. The RSH designation indicates the specific 56-pin VQFN package type used for surface-mount assembly. This series targets applications demanding multi-channel precision with integrated signal conditioning.

Analog To Digital Converters (ADC) Replacement Considerations

ADS9815RSHR serves as a functional substitute offering identical analog front-end characteristics with a reduced sampling rate of 1 MSPS per channel.