ADS1131IDRNLC

Analog To Digital Converters (ADC) Overview

The ADS1131IDRNLC is an 18-bit analog-to-digital converter (ADC) designed for bridge sensor applications. It integrates a low-noise amplifier with a fixed gain of 64, an internal oscillator, and a precision delta-sigma modulator. The device supports selectable data rates of 10 SPS or 80 SPS via the SPEED pin, providing simultaneous 50Hz and 60Hz rejection at the lower rate. It operates on a supply voltage range of 3V to 5.3V and features a simple two-wire serial interface controlled by dedicated pins without digital registers. The component includes a low-side power switch for bridge sensors and is housed in a 16-pin SO package.

Analog To Digital Converters (ADC) Feature Summary

• Complete front-end solution for bridge sensors including integrated amplifier, oscillator, and power switch
• Pin-driven control architecture eliminating the need for digital register programming
• Internal oscillator provides precise timing for simultaneous 50Hz and 60Hz line-cycle interference rejection

Analog To Digital Converters (ADC) Applications

• Weigh scales
• Strain gauges
• Load cells
• Industrial process control

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'NLC' against the official Package Option Addendum, as standard production listings typically utilize suffixes such as 'IDR' or 'ID'. Confirm that the requested variant matches the active status and thermal metrics defined in the datasheet. Ensure compatibility with the specified -40°C to +85°C operating temperature range and SO-16 package dimensions during procurement validation.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a complete, register-free ADC front-end is required for high-precision bridge sensor measurements. The fixed gain of 64 and ±39mV full-scale input range are optimized for small differential signals typical in load cells. Choose the 10SPS data rate for maximum noise performance and line-frequency rejection, or 80SPS for faster response times. Ensure external reference and bypass capacitors are placed close to the device for optimal stability.

Analog To Digital Converters (ADC) Part Context

The ADS1131 belongs to Texas Instruments' family of precision analog-to-digital converters tailored for industrial sensing. It serves as a specialized solution for applications requiring high resolution and minimal external component count. Unlike general-purpose ADCs, it integrates signal conditioning specifically for resistive bridge inputs, simplifying system design for weight measurement and force sensing tasks.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1130 is a similar 18-bit ADC from the same family but features single-ended inputs rather than differential inputs. When substituting, verify that the application can accommodate single-ended signal configurations and check if the ADS1130's specific interface requirements align with the existing design constraints.