ADS1120IRVAR

Analog To Digital Converters (ADC) Overview

The ADS1120IRVAR is a low-power, low-noise 16-bit analog-to-digital converter manufactured by Texas Instruments. It features a sigma-delta architecture with four multiplexed inputs supporting differential and single-ended configurations. The device integrates a programmable gain amplifier (PGA), an internal oscillator, and excitation current sources (iDACs). It operates on analog and digital supply voltages ranging from 2.3 V to 5.5 V. The ADC supports data rates up to 2 kSPS and communicates via an SPI interface. It is housed in a 16-VQFN package measuring 3.5x3.5 mm. The component functions within a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a programmable gain amplifier and excitation current sources for direct sensor interfacing
• Includes an internal oscillator and temperature sensor to reduce external component count
• Supports 50/60 Hz line frequency rejection for noise immunity

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Building automation sensors
• Connected sensor networks

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IRVAR' corresponds to the 16-VQFN package and industrial temperature grade during procurement. Confirm that the ordering quantity matches the required tape-and-reel packaging format. Ensure compatibility with the system's voltage levels and SPI timing requirements before finalizing orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and low power consumption are required for multi-channel signal acquisition. The integrated PGA and iDACs make it suitable for applications involving resistive sensors like RTDs or strain gauges. Consider the 16-VQFN package size constraints and thermal dissipation capabilities relative to the 1.4 mW power consumption at maximum performance settings.

Analog To Digital Converters (ADC) Part Context

The ADS1120IRVAR belongs to the ADS1120 family of precision analog-to-digital converters. This series is designed for applications requiring high accuracy and low power in a compact form factor. The IRVAR suffix specifically denotes the reel-packaged version in the VQFN-16 footprint, distinguishing it from tube-packaged variants like the IPW.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1120IPW is a pin-compatible alternative in a TSSOP-16 package. Verify package dimensions and thermal characteristics when substituting. Other members of the ADS112x family may offer different channel counts or feature sets.