ADS7955SDBT

Analog To Digital Converters (ADC) Overview

The ADS7955SDBT is a Texas Instruments microPower successive approximation register (SAR) analog-to-digital converter featuring an 8-channel single-ended input multiplexer. It provides 10-bit resolution with a sampling rate of 1 MSPS. The device 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. It utilizes an external reference voltage of 2.51 V. Key performance metrics include a signal-to-noise ratio (SNR) of 60 dB, differential nonlinearity (DNL) of +/- 0.5 LSB, and integral nonlinearity (INL) of +/- 0.5 LSB. Power consumption is specified at 11.5 mW. The component is housed in a 30-TSSOP package and supports serial peripheral interface (SPI) communication.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel single-ended multiplexer for efficient multi-point data acquisition
• Supports flexible power supply configurations with separate analog and digital voltage domains
• Delivers high linearity accuracy with low differential and integral nonlinearity specifications

Analog To Digital Converters (ADC) Applications

• Portable instrumentation systems requiring low power consumption
• Industrial process control applications with multiple sensor inputs
• Data acquisition modules in battery-operated devices

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 the required operating temperature range of -40°C to +125°C. Confirm that the external reference voltage matches the system design requirements of 2.51 V. Check moisture sensitivity level ratings for proper storage and handling procedures during assembly.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight single-ended channels are required alongside moderate precision and high speed. Compare against other ADS795x variants if higher resolution or different channel counts are needed. Ensure the SPI interface timing meets the host controller specifications. Verify that the TSSOP-30 footprint fits the available PCB space constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS795x family of microPower SAR ADCs from Texas Instruments. The series offers various resolutions and channel counts, sharing common architectural features like low power consumption and serial interfaces. The ADS7955 specifically targets applications needing eight channels at 10-bit resolution, bridging the gap between lower channel count and higher resolution options within the product line.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7955SDBTRG4 is a verified equivalent variant offering the same electrical specifications but in tape-and-reel packaging instead of tubes.