ADS7955SDBTR

Analog To Digital Converters (ADC) Overview

The ADS7955SDBTR is a microPower successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Texas Instruments. It features an 8-channel single-ended input multiplexer and delivers 10-bit resolution at 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, typically 2.5 V, and communicates via a standard SPI interface. Key performance metrics include a signal-to-noise ratio (SNR) of 60 dB and a power consumption of 11.5 mW. The component is housed in a 30-pin TSSOP package and supports operation across a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel single-ended input multiplexer for efficient multi-point data acquisition.
• Provides high-speed conversion capability with a sampling rate of up to 1 MSPS.
• Supports flexible power configurations through independent analog and digital supply domains.
• Features low power consumption suitable for battery-operated applications.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation systems requiring low power and moderate resolution.
• Industrial process control loops utilizing single-ended sensor inputs.
• Data acquisition modules in embedded systems with SPI-compatible controllers.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing components. Confirm that the order matches the exact pin count and package dimensions of the 30-TSSOP form factor. Ensure compatibility with the required operating temperature range for the intended environment. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit or obsolete stock variations.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight single-ended channels are required alongside a 1 MSPS throughput rate. Consider the ADS7955SDBTR over differential input ADCs if system grounding allows for single-ended connections. Evaluate the external reference requirement against internal reference alternatives if board space is constrained. Verify that the 10-bit resolution meets the dynamic range requirements of the target application signals.

Analog To Digital Converters (ADC) Part Context

This device belongs to the Texas Instruments ADS795x family of microPower SAR ADCs. It shares architectural similarities with models like the ADS7950 and ADS7953 but differs in resolution and channel count. The ADS7955 specifically bridges the gap between lower-resolution devices and higher-channel-count variants within the series.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7955SDBTG4 is a lead-free variant of the same functional device. Other family members such as the ADS7950 offer different resolutions or channel counts. Direct pin-for-pin replacements must maintain the 30-TSSOP package and 1 MSPS speed class.