ADS1114QNKSRQ1

Analog To Digital Converters (ADC) Overview

The ADS1114QNKSRQ1 is an automotive-grade, low-power, 16-bit analog-to-digital converter (ADC) from Texas Instruments. It features a sigma-delta architecture with an integrated programmable gain amplifier (PGA) and a precision internal reference. The device supports differential or single-ended inputs via an I2C-compatible serial interface. Key electrical specifications include a maximum data rate of 860 samples per second (SPS), an input voltage range of 2.0V to 5.5V, and operation within an extended temperature range of -40°C to +125°C. It is designed for high-accuracy applications requiring low power consumption and robust performance in automotive environments.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with sigma-delta modulation and integrated PGA
• I2C-compatible serial interface with multiple slave addresses
• Programmable data rates up to 860 SPS
• AEC-Q100 qualified for automotive applications

Analog To Digital Converters (ADC) Applications

• Automotive sensor signal conditioning
• Battery management systems
• Industrial process control monitoring
• Medical equipment data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'QNKSRQ1' against the official Texas Instruments datasheet to confirm package type (VSSOP-10) and tape-and-reel quantity. Ensure the component meets AEC-Q100 Grade 1 requirements for your specific temperature and reliability standards. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components, as automotive-grade parts require strict supply chain verification.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution is required for low-frequency signals with minimal external components. The integrated PGA eliminates the need for external amplifiers in many sensor interfaces. Compare the 860 SPS maximum speed against application needs; if higher throughput is required, consider faster SAR ADCs. Verify that the I2C bus speed compatibility matches the system controller. Check power supply constraints, as the device operates from 2.0V to 5.5V.

Analog To Digital Converters (ADC) Part Context

The ADS111x series represents Texas Instruments' family of low-power, 16-bit ADCs. The 'Q' prefix indicates automotive qualification under AEC-Q100 standards. The 'NKS' designation specifies the VSSOP-10 package and thermal characteristics. This model is part of a broader portfolio including the ADS1115, which offers four channels instead of two, providing flexibility for multi-sensor designs in space-constrained automotive PCB layouts.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-to-pin replacements within the same family include the ADS1115Q, which adds two additional input channels. For non-automotive applications, the standard ADS1114 may serve as a functional substitute if AEC-Q100 qualification is not required. Verify that any alternative maintains the same I2C addressing scheme and PGA settings to ensure software compatibility.