ADS7947SRTET

Analog To Digital Converters (ADC) Overview

The Texas Instruments ADS7947SRTET is a dual-channel, 12-bit successive approximation register (SAR) analog-to-digital converter. It operates with a standard sample rate of 2 MSPS using a 16-clock data frame, or up to 2.1 MSPS with an optimized short frame. The device accepts pseudo-differential or single-ended inputs and features an external reference input. It supports analog supply voltages from 2.7 V to 5.5 V and digital supplies from 1.65 V to 5.5 V. Key performance metrics include a signal-to-noise ratio of 72 dB, integral nonlinearity of 0.0244% FSR, and power consumption of 7.5 mW. It functions within a temperature range of -40°C to +125°C and is housed in a 16-WQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel architecture supporting pseudo-differential and single-ended input configurations for flexible signal interfacing.
• High-speed SAR conversion capability allowing operation at 2 MSPS with standard framing or increased rates with optimized clocking.
• Wide voltage compatibility enabling direct interface with various logic levels through independent analog and digital supply domains.
• Compact surface-mount packaging designed for space-constrained portable and industrial applications.

Analog To Digital Converters (ADC) Applications

• Data acquisition systems requiring multi-channel precision measurement
• Medical instrumentation and diagnostic equipment
• Battery-powered portable devices with low power constraints
• Optical networking and communication system interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'SRTET' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the ordering part number matches the required moisture sensitivity level and reflow soldering profile. Cross-reference the component marking code with official identification guides to prevent counterfeit substitution during sourcing.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel 12-bit resolution is required alongside high sampling speeds. Consider the external reference requirement if system accuracy demands precise voltage standards. Evaluate the WQFN-16 footprint against available PCB real estate and thermal dissipation capabilities. Compare power consumption figures against battery life requirements for portable implementations.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS794x family, which includes the ADS7948 (10-bit) and ADS7949 (8-bit) variants. All members share similar pinouts and operational characteristics but differ in resolution and maximum achievable sample rates when using optimized short frames. The family is designed for unified design-in processes across varying precision requirements.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7948SRTET: Offers 10-bit resolution with higher max speed (2.57 MSPS). ADS7949SRTET: Provides 8-bit resolution with highest max speed (3 MSPS). ADS7946SRTET: Features 14-bit resolution but may have different power/performance trade-offs. Verify pin compatibility and software register settings before substitution.