ADS7956SRHBR

Analog To Digital Converters (ADC) Overview

The ADS7956SRHBR is a 12-bit, 16-channel successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates with a sampling rate of 1 MSPS and supports single-ended inputs. The device features an SPI-compatible digital interface and requires an external voltage reference. Power consumption is specified at 11.5 mW. Analog supply voltage ranges from 2.7 V to 5.25 V, while the digital supply ranges from 1.7 V to 5.25 V. Key performance metrics include a signal-to-noise ratio (SNR) of 70 dB and an integral nonlinearity (INL) of 0.048% FSR. It functions within a temperature range of -40°C to +125°C and is housed in a VQFN-32 package.

Analog To Digital Converters (ADC) Feature Summary

• High channel density with 16 single-ended inputs in a compact VQFN-32 package
• Low power consumption of 11.5 mW suitable for battery-operated systems
• Flexible dual-supply operation allowing independent analog and digital voltage levels
• SPI-compatible serial interface for straightforward microcontroller integration

Analog To Digital Converters (ADC) Applications

• Industrial process control data acquisition systems
• Portable medical instrumentation requiring multi-channel sensing
• Automotive sensor interfaces operating in harsh thermal environments
• Factory automation and monitoring equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix SRHBR corresponds to the reel packaging configuration when ordering. Confirm that the required external reference voltage matches the system design specifications, as this component does not include an internal reference. Ensure PCB layout adheres to the thermal pad requirements specified in the datasheet for optimal heat dissipation during continuous operation at maximum temperatures.

Analog To Digital Converters (ADC) Selection Notes

Select this model when a balance between resolution and channel count is required without excessive power draw. Compare against the ADS7953 for higher precision or the ADS7957 if lower resolution suffices. Consider the VQFN-32 footprint constraints during mechanical design. Verify compatibility with the host processor's SPI clock speeds and logic voltage levels before finalizing the bill of materials.

Analog To Digital Converters (ADC) Part Context

This component belongs to the Texas Instruments ADS795x family of micro-power SAR ADCs. It shares architectural similarities with the ADS7953 and ADS7957 but differs in resolution and channel count. The SRHBR suffix indicates a tape-and-reel packaging format intended for automated surface-mount assembly processes, distinguishing it from tube-packaged variants like the SBRHBT.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7953SBRHBR offers 12-bit resolution with identical pinout and power characteristics but provides higher accuracy. The ADS7957SRHBR provides 10-bit resolution with similar performance metrics. Cross-reference these parts only if resolution adjustments align with system requirements.