ADS7946SRTET

Analog To Digital Converters (ADC) Overview

The ADS7946SRTET is a dual-channel, 14-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It supports sampling rates up to 2 MSPS with pseudo-differential or single-ended input configurations. The device operates on an analog supply voltage ranging from 2.7 V to 5.25 V and a digital supply voltage from 1.65 V to 5.25 V. Key electrical specifications include a signal-to-noise ratio of 82 dB and a typical power consumption of 10.5 mW. It utilizes an external reference voltage of 2 V and communicates via an SPI interface. The component is housed in a 16-WQFN package and functions within a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel architecture with integrated multiplexer and sample-and-hold circuitry
• Ultralow-power operation suitable for battery-powered applications
• Flexible input configuration supporting both pseudo-differential and single-ended signals
• Compact WQFN-16 package design for space-constrained PCB layouts

Analog To Digital Converters (ADC) Applications

• Portable medical instrumentation requiring high-resolution data acquisition
• Industrial process control systems with multi-channel sensor inputs
• Data logging equipment utilizing low-power microcontroller interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ET' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the external reference voltage requirement aligns with the system's available reference sources, as the device does not contain an internal voltage reference. Ensure compatibility with the target SPI clock speeds and logic levels before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel 14-bit resolution at 2 MSPS is required with minimal power consumption. Compare against the ADS7945 if differential-only inputs are sufficient, or the ADS7947 if 12-bit resolution meets the application needs. Verify that the 16-WQFN footprint matches the board layout constraints and that the operating temperature range covers the intended environmental conditions.

Analog To Digital Converters (ADC) Part Context

The ADS7946SRTET belongs to the ADS794x family of ultralow-power ADCs from Texas Instruments. This series includes variants such as the ADS7945, ADS7947, ADS7948, and ADS7949, which share similar pinouts and architectures but differ in resolution and input types. The SRTET designation indicates the surface-mount WQFN package variant within this product line.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7945SRTER offers identical performance with fully differential inputs only. ADS7947SRTER provides 12-bit resolution with pseudo-differential inputs. ADS7949SRTER delivers 8-bit resolution for lower cost applications.