ADS1118QDGSRQ1

Analog To Digital Converters (ADC) Overview

The ADS1118QDGSRQ1 is an automotive-grade, ultra-small, low-power 16-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a delta-sigma architecture and features an integrated multiplexer, programmable gain amplifier (PGA), internal reference, oscillator, and temperature sensor. The device supports SPI-compatible digital interfaces and accepts differential or single-ended inputs across four channels. It operates on a supply voltage ranging from 2V to 5.5V for both analog and digital domains. The component achieves sampling rates up to 860 samples per second (SPS) with a maximum integral nonlinearity of 0.0015% FSR. It functions within an extended industrial temperature range of -40°C to +125°C and is housed in a compact 10-VSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for high reliability in vehicle environments.
• Integrated signal chain includes a 4-channel multiplexer, programmable gain amplifier, and precision internal voltage reference.
• Built-in temperature sensor provides calibrated measurements with uncalibrated error less than 0.5°C over the 0°C to 65°C range.
• Ultra-compact physical footprint designed to minimize printed circuit board area requirements.

Analog To Digital Converters (ADC) Applications

• Automotive sensor signal conditioning
• Battery management systems
• Industrial process control instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix matches the required tape-and-reel packaging configuration for automated assembly lines. Confirm that the component meets the specific AEC-Q100 reliability grade requirements mandated by the target automotive application. Ensure compatibility with the system's SPI communication protocol and voltage levels before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution is required alongside a built-in temperature sensor and multiplexer in a constrained space. It is suitable for designs needing low power consumption during active operation while maintaining high accuracy. Consider the 860 SPS maximum data rate against the system's bandwidth requirements. Verify that the input voltage range aligns with the PGA settings and the available supply voltage headroom.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS1x1x family of ultra-small, low-power ADCs from Texas Instruments. It serves as the 16-bit variant within this series, offering higher resolution compared to the 12-bit ADS1018. The 'Q' prefix indicates automotive qualification, distinguishing it from standard commercial variants. The 'DGSR' suffix specifies the VSSOP-10 package and reel-based shipping format.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1118IDGSRQ1 is a direct functional substitute within the same automotive qualification line. For non-automotive applications, the ADS1118IDGSR offers identical electrical specifications without the automotive certification. Designers should verify pinout compatibility and software register mapping when transitioning between these variants.