ADS7953SRHBR

Analog To Digital Converters (ADC) Overview

The ADS7953SRHBR is a 12-bit, 1-MSPS, 16-channel single-ended microPower SAR ADC manufactured by Texas Instruments. It operates with an analog supply voltage range of 2.7 V to 5.25 V and a digital I/O supply range of 1.7 V to 5.25 V. The device features a serial SPI interface and consumes 11.5 mW of power. Key performance metrics include a signal-to-noise ratio (SNR) of 70 dB and a signal-to-noise and distortion ratio (SINAD) of 71.3 dB. Integral nonlinearity (INL) is specified at +/- 1 LSB. It is housed in a 32-pin VQFN package and supports operating temperatures from -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Provides 16 single-ended analog input channels for multi-point monitoring applications.
• Integrates a successive approximation register (SAR) architecture with built-in sample-and-hold functionality.
• Supports software-selectable unipolar input ranges of 0 V to 2.5 V or 0 V to 5 V.
• Enables direct interfacing with CMOS digital hosts via a wide 1.7 V to 5.25 V I/O supply range.

Analog To Digital Converters (ADC) Applications

• Battery-powered systems requiring low power consumption
• Isolated power supply monitoring
• Programmable logic controllers (PLC) and industrial process control
• Medical instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'RHBR' corresponds to the VQFN-32 package and reel packaging configuration as listed in official Texas Instruments documentation. Confirm that the external reference type requirement aligns with system design constraints, as the device does not include an internal voltage reference. Ensure compatibility with the required SPI clock speeds and digital logic levels before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high channel count (16) and moderate resolution (12-bit) are required for single-ended signals. It is suitable for designs needing zero-latency conversion and operation across a wide temperature range up to 125°C. Compare against the ADS7957 (10-bit) or ADS7960 (8-bit) if lower resolution allows for cost optimization, or consider alternative packages like TSSOP-38 if board space permits larger footprints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS795x family of microPower SAR ADCs from Texas Instruments. The series offers configurable resolutions of 12, 10, or 8 bits and varying channel counts. The SRHBR variant specifically denotes the 12-bit version with 16 channels in a VQFN-32 package, designed for compact, high-density data acquisition systems.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7953SDBTR serves as a pin-compatible alternative using a TSSOP-38 package. For higher resolution needs within the same form factor, the ADS7957SRHBR (10-bit) is available. Lower resolution options include the ADS7960SRHBR (8-bit). Verify pinout and electrical specifications carefully when substituting between different package types or bit depths.