ADS7957SRHBT

Analog To Digital Converters (ADC) Overview

The ADS7957SRHBT is a 10-bit, 16-channel, single-ended successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply voltage range of 1.7 V to 5.25 V. The device supports a sampling rate of 1 MSPS and features an SPI-compatible serial interface. Key performance metrics include a signal-to-noise ratio (SNR) of 60 dB, a signal-to-noise and distortion ratio (SINAD) of 60 dB, and an integral nonlinearity (INL) of 0.048% FSR. Power consumption is specified at 11.5 mW. The component is housed in a 32-pin VQFN package and functions within a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• MicroPower architecture enabling low energy consumption suitable for battery-operated systems
• High-speed 1 MSPS sampling capability across 16 single-ended channels
• Flexible dual-supply operation supporting both 2.7V–5.25V analog and 1.7V–5.25V digital domains
• External reference input configuration for customizable voltage scaling

Analog To Digital Converters (ADC) Applications

• Industrial process control data acquisition systems
• Portable medical instrumentation requiring multi-channel sensing
• Battery-powered monitoring equipment
• Automotive sensor interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'RHBT' against the manufacturer's official datasheet to confirm the exact package variant, tape-and-reel quantity, and humidity sensitivity level. Ensure that the external reference voltage requirements align with the system design, as the device utilizes an external reference input rather than an internal one. Cross-check the operating temperature range specifications to guarantee compliance with the intended environmental conditions.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of moderate resolution and high channel count is required without excessive power draw. Compare against the ADS7953 for higher 12-bit resolution or the ADS7960 for lower 8-bit resolution if cost or speed constraints differ. Consider the VQFN-32 package dimensions for PCB layout compatibility. Verify that the single-ended input topology matches the sensor output type, as differential inputs are not supported by this specific model.

Analog To Digital Converters (ADC) Part Context

The ADS7957 belongs to the TI microPOWER SAR ADC family, which shares common architectural features such as the 1 MSPS sampling rate and SPI interface. It is part of a broader series including the ADS7950 through ADS7961, differentiated primarily by resolution (8-bit to 12-bit) and channel count (4 to 16). This specific model fills the niche for 10-bit applications requiring 16 channels, bridging the gap between the 8-bit ADS7960 and the 12-bit ADS7953.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7957SRHBR: Identical electrical specifications but may differ in packaging format (reel vs. cut tape). ADS7953SRHBT: Offers 12-bit resolution with identical channel count and package. ADS7960SRHBR: Provides 8-bit resolution with 12 channels.