ADS8914BRGET

Analog To Digital Converters (ADC) Overview

The ADS8914BRGET is an 18-bit, 250-ksps successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a single differential input channel and operates with an analog supply voltage range of 3 V to 5.5 V and a digital supply voltage range of 1.65 V to 5.5 V. The device integrates an internal reference buffer and an LDO for single-supply operation. Key performance metrics include a signal-to-noise ratio (SNR) of 102.5 dB, total harmonic distortion (THD) of -125 dB, integral nonlinearity (INL) of ±0.5 LSB, and differential nonlinearity (DNL) of ±0.2 LSB. Power consumption is 14 mW at the maximum sampling rate.

Analog To Digital Converters (ADC) Feature Summary

• Integrated low-power reference buffer eliminates external droop concerns
• Enhanced SPI digital interface supports clock speeds up to 20 MHz
• Wide unipolar differential input range accommodates ±Vref signals
• Internal LDO enables simplified single-supply system designs

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high precision
• Medical instrumentation such as ultrasound and patient monitors
• High-resolution data acquisition modules
• Test and measurement equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the component authenticity through authorized Texas Instruments distributors or certified partners. Confirm the specific ordering suffix matches the required package and tape/reel specifications. Check for RoHS compliance status and moisture sensitivity level ratings before integration into production workflows.

Analog To Digital Converters (ADC) Selection Notes

Select this model when an 18-bit resolution and 250-ksps throughput are sufficient for the application. Consider the ADS8910B or ADS8912B if higher sampling rates of 1 MSPS or 500 kSPS are required. Ensure the system design supports the specified analog and digital voltage ranges and utilizes the enhanced SPI interface correctly.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS891xB family of high-speed SAR ADCs from Texas Instruments. The family shares common architectural features including integrated reference buffers and low-power operation. Variants within the series differ primarily in sampling speed, ranging from 250 kSPS to 1 MSPS, while maintaining consistent 18-bit resolution and performance characteristics.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same family include the ADS8910B for 1 MSPS operation and the ADS8912B for 500 kSPS operation. These parts share identical pinouts and software compatibility but offer different throughput capabilities.