ADS9212RSHR

Analog To Digital Converters (ADC) Overview

The ADS9212RSHR is a dual-channel, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC) with an integrated analog front end. It supports simultaneous sampling at up to 8 MSPS and features a constant 1MΩ input impedance. The device accepts programmable bipolar input ranges from ±2.5V to ±12V and includes overvoltage protection up to ±18V. It operates on 5V analog and 1.8V digital supplies, with a digital interface supporting 1.2V to 1.8V logic levels. Key performance metrics include a typical SNR of 92dB, THD of -113dB, DNL of ±0.5LSB, and INL of ±0.8LSB. It integrates a 4.096V reference and a 2.5V output buffer.

Analog To Digital Converters (ADC) Feature Summary

• Dual simultaneous-sampling architecture with integrated low-drift precision references
• Complete analog front-end including 1MΩ input impedance, PGA, and programmable low-pass filter
• User-selectable analog input bandwidths for optimized noise or speed performance
• High-speed digital interface compatible with 1.2V to 1.8V logic levels

Analog To Digital Converters (ADC) Applications

• Semiconductor test equipment
• Data acquisition (DAQ) systems
• Source measure units (SMU)

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'RSH' corresponds to the VQFN-56 package configuration required for your design. Confirm that the internal pull-up and pull-down resistor configurations on control pins align with your system's power-on state requirements. Ensure supply decoupling capacitors are placed close to AVDD_5V, VDD_1V8, and IOVDD pins as specified in the datasheet layout guidelines.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high accuracy and wide dynamic range are required for multi-channel signal conditioning. The integrated analog front end eliminates the need for external driver circuits due to the 1MΩ input impedance. Consider the available input voltage ranges and bandwidth settings to match sensor characteristics. Verify thermal management capabilities given the junction-to-ambient resistance values in the VQFN package.

Analog To Digital Converters (ADC) Part Context

The ADS9212RSHR belongs to the ADS9212 family of data acquisition ADCs from Texas Instruments. This series is designed for industrial applications requiring high resolution and simultaneous sampling. The RSH suffix specifically denotes the 56-pin VQFN package variant. Other variants in the family may differ in pin count or package style but share the core ADC functionality.

Analog To Digital Converters (ADC) Replacement Considerations

No public confirmed substitute part numbers are documented.