ADS8922BRGET

Analog To Digital Converters (ADC) Overview

The ADS8922BRGET is a 16-bit, 500-kSPS successive approximation register (SAR) analog-to-digital converter (ADC) 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 minimum of 1.65 V. The device integrates an internal reference buffer and an internal low-dropout (LDO) regulator, supporting external reference modes. It utilizes a multi-SPI interface and is housed in a 24-VQFN package. Key performance metrics include a maximum integral nonlinearity (INL) of ±0.5 LSB, a signal-to-noise ratio (SNR) of 96.8 dB, and a signal-to-noise and distortion ratio (SINAD) of 95.9 dB. Typical power consumption is 16 mW, with an operating temperature range from -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an internal reference buffer and internal LDO for simplified system design.
• Supports daisy-chainable operation with an integrated oscillator for clock generation.
• Features a multi-SPI interface compatible with standard digital controllers.

Analog To Digital Converters (ADC) Applications

• High-resolution data acquisition systems requiring low power consumption.
• Industrial process control and monitoring applications.
• Medical instrumentation and diagnostic equipment.
• Precision test and measurement instruments.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'GET' corresponds to the tape-and-reel packaging configuration when ordering. Confirm that the internal LDO and reference buffer requirements align with the target application's noise sensitivity. Ensure the SPI interface timing parameters meet the host processor's specifications. Check for RoHS compliance status relevant to the manufacturing region. Validate the 24-VQFN thermal pad soldering requirements during assembly.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution at 500 kSPS is required with minimal external components due to integrated regulators. Compare SNR and SINAD values against system noise floor requirements. Consider the 24-VQFN package size constraints relative to available PCB space. Evaluate the power budget against the typical 16 mW consumption at the desired sampling rate. Verify compatibility with the available analog and digital supply voltages.

Analog To Digital Converters (ADC) Part Context

The ADS8922B belongs to the ADS89xx family of high-performance SAR ADCs from Texas Instruments. This family shares common architectural features such as daisy-chaining capabilities and multi-SPI interfaces. Variants within the family differ primarily in resolution, sampling speed, and channel count. The ADS8922BRGET specifically targets applications needing 16-bit accuracy with moderate throughput.

Analog To Digital Converters (ADC) Replacement Considerations

Consult official Texas Instruments documentation for qualified replacements within the ADS89xx family. Verify pin-to-pin compatibility if substituting with other variants like the ADS8912 or ADS8904. Ensure functional equivalence regarding integrated references and LDOs. Confirm interface protocol compatibility before replacement.