ADS7957SDBTR

Analog To Digital Converters (ADC) Overview

The ADS7957SDBTR is a 10-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 via an SPI-compatible serial interface. The device functions within 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. Key performance metrics include a signal-to-noise ratio (SNR) of 60 dB, a differential nonlinearity (DNL) of +/- 0.5 LSB, and an integral nonlinearity (INL) of +/- 0.5 LSB. Power consumption is specified at 11.5 mW. The component is housed in a 38-pin TSSOP package and is rated for operation between -40°C and +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Provides 16 channels of simultaneous or multiplexed single-ended analog input conversion.
• Integrates a high-speed SAR architecture enabling 1 MSPS throughput per channel.
• Features low power consumption suitable for battery-operated applications.
• Supports flexible digital interfacing through standard SPI communication protocols.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation devices necessitating low power and high channel count.
• Automotive sensor interfaces operating under extended temperature conditions.
• Medical equipment utilizing multiple single-ended signal inputs.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm the exact voltage ranges and pinout compatibility with the target PCB design. Ensure the external reference voltage meets the required accuracy specifications for the application. Check for moisture sensitivity level requirements during storage and handling procedures.

Analog To Digital Converters (ADC) Selection Notes

Select this component when 10-bit resolution and 16 channels are required at 1 MSPS. Compare against ADS7953 for higher 12-bit resolution or ADS7960 for lower cost with fewer channels. Consider the TSSOP-38 package constraints versus VQFN options if board space is limited. Verify that the single-ended input configuration matches the source signals rather than differential requirements.

Analog To Digital Converters (ADC) Part Context

The ADS7957 belongs to the ADS795x family of micro-power SAR ADCs from Texas Instruments. This series shares common architectural features such as the internal sample-and-hold amplifier and SPI interface. Other members include the ADS7950, ADS7951, ADS7953, and ADS7954, which vary primarily in resolution and channel count while maintaining similar power profiles and interface standards.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7957SDBT is the tube-packaged equivalent of the same functional device. ADS7953 offers 12-bit resolution with identical channel count and speed. ADS7950 provides 12-bit resolution but with only 4 channels. ADS7960 offers 8-bit resolution with 12 channels.