ADS7959SDBTR

Analog To Digital Converters (ADC) Overview

The ADS7959SDBTR is an 8-bit, 1 MSPS, 8-channel single-ended microPower 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 features a serial peripheral interface (SPI) for data communication. Key performance metrics include a signal-to-noise ratio (SNR) of 49 dB and a signal-to-noise and distortion ratio (SINAD) of 49 dB. The integral nonlinearity (INL) is specified at 0.12% of full-scale range (FSR). Power consumption is rated at 11.5 mW. It functions within a temperature range of -40°C to +125°C and is housed in a 30-TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• MicroPower architecture enabling low energy consumption suitable for battery-operated systems
• High-speed 1 MSPS sampling rate across all eight single-ended channels
• Flexible dual-supply operation supporting both 2.7V–5.25V analog and 1.7V–5.25V digital domains
• Extended industrial temperature range ensuring reliable operation in harsh environments

Analog To Digital Converters (ADC) Applications

• Portable medical instrumentation requiring low power and moderate resolution
• Industrial process control systems with multiple sensor inputs
• Data acquisition modules for environmental monitoring
• Battery-powered test and measurement equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'SDBTR' corresponds to the TSSOP-30 package and tape-and-reel packaging configuration. Confirm that the external reference voltage requirements align with system design constraints, as this device utilizes an external reference input rather than an internal one. Ensure compatibility with SPI bus voltage levels given the separate analog and digital supply ranges.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight single-ended channels are required at 1 MSPS with 8-bit resolution. Compare against the ADS7959SRGET if a VQFN-24 package is preferred instead of the TSSOP-30 form factor. Consider higher-resolution alternatives from the ADS795x family if greater precision is needed, or lower-channel variants if fewer inputs suffice. Verify thermal management capabilities for the TSSOP-30 package under maximum operating conditions.

Analog To Digital Converters (ADC) Part Context

The ADS7959SDBTR belongs to the Texas Instruments ADS795x series of microPower SAR ADCs. This family shares common architectural features including high speed, low power consumption, and flexible supply options. The SDBTR designation specifically identifies the 30-pin thin-shrink small-outline package (TSSOP) variant with reel packaging, distinguishing it from other pin-count or package configurations within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7959SRGET offers identical electrical specifications but uses a VQFN-24 package. ADS7959SDBT provides the same functionality in a tube-packaged TSSOP-30 format. For applications requiring different channel counts or resolutions within the same family, consider ADS7950, ADS7951, or ADS7953 variants.