ADS8912BRGET

Analog To Digital Converters (ADC) Overview

The ADS8912BRGET is an 18-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a single differential input and operates at a sampling rate of 500 kSPS with no latency output. The device supports an enhanced SPI digital interface with an SCLK up to 20 MHz. It functions on a single supply, utilizing an integrated LDO for analog power (3 V to 5.5 V) and a separate digital supply (1.65 V to 5.5 V). The reference voltage range is 2.5 V to 5 V. Key performance metrics include an SNR of 102.5 dB, THD of -125 dB, INL of ±0.5 LSB, and DNL of ±0.2 LSB. Power consumption is 16 mW at the maximum sampling rate. It is housed in a 24-VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Integrated low-power reference buffer eliminates external droop concerns
• Single-supply operation enabled by internal LDO
• Enhanced SPI interface supporting high-speed clocking

Analog To Digital Converters (ADC) Applications

• High-resolution data acquisition systems
• Industrial process control instrumentation
• Medical equipment requiring precise signal conversion

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix BRGET against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the required operating temperature range of -40°C to 125°C. Confirm that the external reference voltage falls within the 2.5 V to 5 V input range for proper ADC functionality. Check for any recent PCN updates regarding assembly materials or manufacturing site changes.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 18-bit resolution and 500 kSPS throughput are required without pipeline latency. Compare against the ADS8910B if higher speed (1 MSPS) is needed, or the ADS8914B if lower power consumption at reduced speeds is prioritized. Ensure the system design accommodates the dual supply requirement for analog and digital domains despite the integrated LDO.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS891xB family of 18-bit SAR ADCs from Texas Instruments. The family includes variants with different sampling rates: ADS8910B (1 MSPS), ADS8912B (500 kSPS), and ADS8914B (250 kSPS). All share similar architectural features, including the integrated reference buffer and enhanced SPI interface, differing primarily in speed and associated power consumption profiles.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same family include the ADS8910B for higher speed or ADS8914B for lower power. Verify pinout compatibility and software register settings when migrating between these variants.