ADS7950SRGET

Analog To Digital Converters (ADC) Overview

The ADS7950SRGET is an 8-bit, 4-channel successive approximation register (SAR) analog-to-digital converter (ADC) from Texas Instruments. It operates at a sampling rate of 1 MSPS with a serial peripheral interface (SPI). The device accepts single-ended inputs and requires an external reference voltage. Power supply ranges are 2.7 V to 5.25 V for analog supplies (+VA) and 1.7 V to 5.25 V for digital I/O supplies (+VBD). Typical power dissipation is 14.5 mW at 1 MSPS with +VA = 5 V and +VBD = 3 V. The component is housed in a 24-pin VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• 1-MHz sampling rate with zero latency conversion
• Two software-selectable input ranges: 0 to VREF or 0 to 2 x VREF
• Programmable alarm levels and configurable GPIOs
• Low power consumption with 1 μA power-down current

Analog To Digital Converters (ADC) Applications

• PLC/IPC systems
• Optical line card monitoring
• Medical instrumentation
• Digital power supplies
• High-speed data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'RGE' corresponds to the 24-pin VQFN package configuration as defined in the manufacturer's orderable addendum. Confirm that the device revision matches the required documentation version SLAS605C. Ensure compatibility with the intended host microprocessor SPI interface timing requirements before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring four single-ended channels with 8-bit resolution at 1 MSPS. Verify that the external reference voltage supports the desired input range selection. Consider the 24-pin VQFN footprint constraints against available PCB space. Compare performance metrics such as SNR and INL against other family members like the ADS7951 if higher channel counts are needed.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS79xx product family, which includes pin-compatible devices ranging from 4 to 16 channels and resolutions from 8 to 12 bits. The ADS7950 specifically provides the 8-bit, 4-channel variant within this series, sharing the same physical footprint as the 8-channel ADS7951 and 12/16-channel variants to simplify board design scalability.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7951SRGET serves as a direct pin-compatible replacement offering 8 channels instead of 4. Other family members such as the ADS7954SRGET provide 12-bit resolution with 4 channels.