ADS1286UC

Overview

The ADS1286UC 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 supports serial communication interfaces including SPI and I2C. The device operates within an analog and digital supply voltage range of 4.5 V to 5.25 V, consuming approximately 1.25 mW of power. It achieves a sampling rate of 20 kS/s with a signal-to-noise and distortion ratio (SINAD) of 72 dB. Differential nonlinearity (DNL) is specified at +/- 0.75 LSB, while integral nonlinearity (INL) is +/- 2 LSB. The component is housed in an SOIC-8 surface-mount package and functions reliably across a temperature range of -40 °C to +85 °C.

Feature Summary

• 12-bit resolution with 20 kS/s sampling rate
• Micro-power consumption of 1.25 mW
• Single-channel differential input with external reference support
• SPI/I2C compatible serial interface

Applications

• Temperature detection systems
• Long-distance data acquisition applications
• Shielded measurement environments requiring low power

Procurement Notes

Verify the manufacturer designation as Burr-Brown or Texas Instruments, as both entities are associated with this part number in public records. Confirm the specific suffix indicates the UC package variant and operating temperature range. Ensure documentation matches the 12-bit SAR ADC specifications rather than other ADS1286 family members with different resolutions or interfaces.

Selection Notes

Select this component for applications requiring a balance between moderate resolution and ultra-low power consumption. The single-channel differential input limits its use to isolated sensor measurements. Verify that the system clock can support the 20 kS/s maximum sampling rate and that the SPI/I2C interface timing aligns with the host controller requirements.

Part Context

The ADS1286UC belongs to the ADS1286 series of micro-power ADCs originally developed by Burr-Brown before its acquisition by Texas Instruments. This specific part number denotes the UC package variant, which typically corresponds to the SOIC-8 form factor suitable for surface-mount assembly. The series is designed for battery-operated and portable instrumentation where power efficiency is critical.

Replacement Considerations

Publicly available substitute part numbers for the ADS1286UC are not explicitly confirmed in the provided source material. Cross-referencing with other ADS1286 variants such as the ADS1286UB may be necessary, but functional equivalence must be verified against pinout and electrical specifications.