ADS8902BRGET

Analog To Digital Converters (ADC) Overview

The ADS8902BRGET is a single-channel, 20-bit Successive Approximation Register (SAR) Analog-to-Digital Converter manufactured by Texas Instruments. It operates at a sampling rate of 500 kSPS and features an external reference voltage input ranging from 2.5 V to 5 V. The device supports differential analog inputs and communicates via an enhanced SPI interface. It functions within an analog supply range of 3 V to 5.5 V and a digital supply range of 1.65 V to 5.5 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 104.5 dB and a gain error of 0.005% FSR. Power consumption is specified at 14 mW, with maximum power dissipation at 18 mW. The component is housed in a 24-pin VQFN package and operates across a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates internal voltage reference buffer and low-dropout regulator for simplified system design
• Supports daisy-chainable operation for multi-channel data acquisition systems
• Features enhanced SPI interface for high-speed digital communication
• Includes built-in oscillator for clock generation

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution data acquisition
• Medical instrumentation and diagnostic equipment
• Precision test and measurement instruments
• Structural health monitoring applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and tape-and-reel configuration match your manufacturing requirements. Confirm that the external reference voltage specifications align with your system's reference source capabilities. Ensure compatibility with the required SPI protocol modes and voltage levels for both analog and digital domains before integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, 20-bit resolution is required at speeds up to 500 kSPS. Consider the internal LDO and reference buffer if board space and external component count need to be minimized. Evaluate the 24-VQFN package constraints against your PCB layout capabilities and thermal management strategies for high-density designs.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS890xB family of high-performance SAR ADCs from Texas Instruments. The family shares common architectural features such as daisy-chainability and integrated power management blocks. Variants within the series typically differ in resolution, sampling speed, and channel count while maintaining similar interface and packaging standards for consistent system integration.

Analog To Digital Converters (ADC) Replacement Considerations

ADS8900BRGET: Offers higher sampling speed (1 MSPS) but same resolution and package. ADS8904BRGET: Provides lower sampling speed (250 kSPS) with identical resolution and pinout. ADS8912BRGET: Features 18-bit resolution with 500 kSPS speed, suitable if slightly lower precision is acceptable.