ADS1286UA

Overview

The ADS1286UA is a 12-bit micro-power sampling analog-to-digital converter (ADC) manufactured by Burr-Brown. It features a successive approximation register (SAR) architecture with a single differential input channel and a maximum sampling rate of 20 kS/s. The device operates on a supply voltage range of 4.5 V to 5.25 V for both analog and digital domains, consuming approximately 1.25 mW of power. It utilizes an external reference voltage and provides a serial interface compatible with SPI or SSI protocols. Key performance metrics include a differential nonlinearity (DNL) of ±0.75 LSB and an integral nonlinearity (INL) of ±2 LSB.

Feature Summary

• 12-bit resolution with SAR architecture
• Micro-power consumption of 1.25 mW
• Single-channel differential input
• SPI/SSI compatible serial interface

Applications

• Temperature detection systems
• Long-distance data acquisition
• Shielded measurement applications

Procurement Notes

Verify the manufacturer designation as Burr-Brown or Texas Instruments depending on the specific production lot, as Burr-Brown was acquired. Confirm the package type corresponds to the small DIP-8 form factor described in legacy documentation. Ensure the operating temperature range meets the -40°C to +85°C requirement if applicable to the target environment.

Selection Notes

Select this component when a low-pin-count, low-power ADC is required for simple single-channel applications. The 12-bit resolution is suitable for general-purpose sensing tasks where high precision is not critical. Verify that the system can support the required serial clocking and that an external voltage reference is available, as the device does not integrate one.

Part Context

The ADS1286 belongs to the ADS1286 family of micro-power ADCs. The 'UA' suffix typically denotes the plastic DIP-8 package variant. This part serves as a bridge between older Burr-Brown designs and modern Texas Instruments portfolios, maintaining compatibility with legacy SPI-based microcontroller interfaces while offering reduced power consumption compared to earlier generations.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material.