ADS7948SRTER

Analog To Digital Converters (ADC) Overview

The ADS7948SRTER is a dual-channel, 10-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with a standard sample rate of 2 MSPS and supports an SPI digital interface. The device accepts pseudo-differential or single-ended inputs and utilizes an external reference type. Power requirements include an analog supply range of 2.7 V to 5.5 V and a digital supply range of 1.65 V to 5.5 V. Key performance metrics specify a signal-to-noise ratio (SNR) of 61 dB and a power consumption of 7.5 mW. The component functions within a temperature range of -40°C to +125°C and is housed in a WQFN-16 package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel architecture supporting pseudo-differential and single-ended input configurations for flexible signal acquisition.
• High-speed data conversion capability operating at up to 2 MSPS with a standard 16-clock data frame structure.
• Low-power design optimized for battery-operated equipment with minimal power consumption during operation.
• Wide supply voltage compatibility allowing integration into systems with varying analog and digital logic levels.

Analog To Digital Converters (ADC) Applications

• Data acquisition systems requiring moderate resolution and high sampling rates.
• Medical instrumentation utilizing low-voltage power supplies.
• Battery-powered equipment where power efficiency is critical.
• Optical networking applications needing precise signal digitization.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'TER' corresponds to the intended reel packaging configuration before ordering. Confirm that the external reference requirement aligns with system design constraints, as the device does not integrate an internal voltage reference. Ensure the WQFN-16 thermal pad soldering process meets the manufacturer's guidelines for reliable operation across the specified industrial temperature range.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance between 10-bit resolution and 2 MSPS throughput is required for dual-channel signals. Consider the ADS7947 if higher 12-bit precision is necessary, or the ADS7949 if lower resolution allows for increased speed. Verify that the system can accommodate the separate analog and digital supply rails, as the device requires distinct voltage domains for optimal performance.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS794x family of ultralow-power ADCs from Texas Instruments. The series includes the ADS7947 (12-bit), ADS7948 (10-bit), and ADS7949 (8-bit). All members share similar pinouts and interfaces but differ in resolution and maximum achievable sampling speeds when using optimized short data frames. The ADS7948 provides a middle-ground specification within this lineup.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7947SRTER offers 12-bit resolution with identical packaging and interface. The ADS7949SRTER provides 8-bit resolution with potentially higher speed capabilities. Both are part of the same family and maintain functional compatibility regarding pinout and software drivers.