ADS7142QDQCRQ1

Analog To Digital Converters (ADC) Overview

The ADS7142QDQCRQ1 is an automotive-grade, nano-power dual-channel programmable sensor monitor manufactured by Texas Instruments. It integrates a dual-channel analog multiplexer, a SAR ADC, and digital window comparators to enable autonomous monitoring with minimal host intervention. The device operates on a supply voltage range of 1.65 V to 3.6 V and supports I²C communication at speeds up to 3.4 MHz in high-speed mode. It features eight configurable I²C addresses and offers selectable resolution modes, including a 16-bit precision mode via averaging. The component is housed in a compact 10-pin WSON package (3x2 mm) and is qualified under AEC-Q100 standards for operation across a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates dual-channel analog multiplexing with a SAR ADC and internal data buffering for efficient host sleep/wake cycles.
• Features digital window comparers with programmable thresholds and hysteresis to trigger interrupts based on specific event conditions.
• Supports flexible input configurations including pseudo-differential or ground-referenced sensing for independent channel calibration.

Analog To Digital Converters (ADC) Applications

• IoT sensor nodes requiring low-power autonomous monitoring
• Gas, heat, PIR motion, and smoke detectors
• Preventive maintenance systems for elevators, escalators, HVAC, and industrial equipment
• Wearable electronic devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the complete part number including the Q suffix and RQ1 tape-and-reel designation to ensure automotive qualification and correct packaging. Confirm that the design supports the specified 1.65 V to 3.6 V supply range and I²C interface requirements. Check for any specific ESD handling precautions during assembly due to the small form factor.

Analog To Digital Converters (ADC) Selection Notes

Select this component when system power constraints require nano-watt standby currents and autonomous threshold monitoring is necessary. It is suitable for applications needing high-resolution data capture alongside simple alarm functionality. Ensure the application benefits from the integrated multiplexer and comparator logic to reduce microcontroller load.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7142 family of sensor monitors designed to offload processing tasks from the main host CPU. It serves as a bridge between analog sensors and digital systems, providing pre-processed data and event-driven alerts. The Q1 variant specifically meets automotive reliability standards, distinguishing it from commercial grade counterparts.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and software drivers if considering alternative sensor monitors from other manufacturers.

Analog To Digital Converters (ADC) FAQ

What is the maximum I²C clock speed supported by the ADS7142QDQCRQ1?

The device supports I²C communication speeds up to 3.4 MHz in high-speed mode.

How does the device handle data during host sleep periods?

It includes an internal data buffer that stores conversion results, allowing the host to retrieve data upon waking without missing events.

Can the thresholds for the digital window comparators be adjusted?

Yes, the high and low thresholds for each channel are programmable, along with hysteresis settings to prevent false triggering.