ADS7950SDBTR

Analog To Digital Converters (ADC) Overview

The ADS7950SDBTR is a 12-bit, 1-MSPS, 4-channel single-ended microPower SAR ADC from 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 an SPI-compatible serial interface and consumes 11.5 mW of power. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 71.7 dB and a SINAD of 71.3 dB. Differential Nonlinearity (DNL) is specified at -2/1.5 LSB, while Integral Nonlinearity (INL) is +/- 1.5 LSB. It functions within a temperature range of -40°C to +125°C and is housed in a TSSOP-30 package.

Analog To Digital Converters (ADC) Feature Summary

• MicroPower architecture enabling low energy consumption for battery-operated systems
• High-speed 1 MSPS sampling rate with 12-bit resolution across four single-ended channels
• Flexible dual-supply operation supporting both 2.7V–5.25V analog and 1.7V–5.25V digital domains
• SPI-compatible serial interface for straightforward digital communication

Analog To Digital Converters (ADC) Applications

• Portable medical instrumentation requiring low power and moderate precision
• Industrial process control systems with multi-channel signal acquisition
• Data acquisition modules for environmental monitoring
• Battery-powered test and measurement equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing this component. Confirm that the analog and digital supply voltages align with system requirements, as the device supports separate voltage domains. Ensure the TSSOP-30 footprint matches the PCB layout design. Check for RoHS compliance status if required by manufacturing standards. Validate the operating temperature range against the intended application environment.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7950SDBTR when four single-ended inputs are sufficient for the application. Consider alternative models like the ADS7953 if more channels are needed. Evaluate the SNR and INL specifications against system accuracy requirements. Compare power consumption with other SAR ADCs if battery life is critical. Ensure the SPI interface timing meets the host controller's capabilities.

Analog To Digital Converters (ADC) Part Context

The ADS7950 belongs to the ADS795x family of microPower SAR ADCs from Texas Instruments. This series includes variants with different resolutions (8-bit, 10-bit, 12-bit) and channel counts (4, 8, 12, 16). The ADS7950 specifically offers 12-bit resolution and 4 channels, balancing performance and power efficiency. It shares architectural similarities with other members like the ADS7951 and ADS7953, differing primarily in channel count and pinout configuration.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7950SBDBT is a tube-packaged version of the same device. For higher channel counts, consider the ADS7953. For lower resolution options, the ADS7955 or ADS7960 may be suitable. Verify pin compatibility and software register settings when substituting with other devices in the ADS795x family.