ADS7959SDBT

Analog To Digital Converters (ADC) Overview

The ADS7959SDBT is an 8-bit, 1 MSPS, 8-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 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, a differential nonlinearity (DNL) of 0.3 LSB, and an integral nonlinearity (INL) of +/- 0.3 LSB. Typical power consumption is 11.5 mW. It is housed in a 30-pin TSSOP package and supports an operating temperature range from -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel multiplexer with inherent sampling and holding capabilities for efficient multi-point monitoring.
• Supports flexible input configurations with two software-selectable unipolar input ranges.
• Includes four individually configurable general-purpose I/O pins that support programmable alarm thresholds.

Analog To Digital Converters (ADC) Applications

• Battery-powered industrial process control systems
• Portable medical instrumentation requiring low power consumption
• Data acquisition modules for environmental monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm the packaging type, as the SDBT designation indicates tube packaging. Ensure compatibility with external reference voltages, as this device requires an external reference rather than an internal one. Confirm that the system design accommodates the specified analog and digital supply voltage ranges to maintain optimal performance across the full industrial temperature spectrum.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-channel configuration with 8-bit resolution is sufficient for the application requirements. Consider alternative models within the ADS795x family if higher channel counts or greater resolution are needed. Verify that the SPI interface timing aligns with the host microcontroller's capabilities. Ensure the external reference voltage source meets the stability and noise requirements to achieve the specified SNR performance.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS795x series of microPower SAR ADCs from Texas Instruments. The series offers various resolutions and channel counts, sharing common architectural features such as low power consumption and high-speed conversion. The ADS7959SDBT specifically addresses applications requiring moderate resolution with multiple single-ended inputs in a compact surface-mount package.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7959SRGET provides identical electrical specifications but utilizes a VQFN-24 package instead of TSSOP-30. ADS7960SDBT offers 12 channels with similar performance characteristics but uses a 38-pin TSSOP package. Verify pinout compatibility and thermal management requirements when substituting these alternatives.