LTC2632ACTS8-LI12#TRPBF

Overview

The LTC2632ACTS8-LI12#TRPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, a settling time of 4.4µs at 3V, and a supply current of 0.4mA at 3V. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz.

Feature Summary

• Dual 12-bit DACs with rail-to-rail output buffers and guaranteed monotonicity
• Integrated 2.5V reference with 10ppm/°C drift; selectable internal or external reference mode
• Power-on reset configured to mid-scale in internal reference mode
• Maximum INL error of ±1.5LSB for the 'A' grade

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF versus #TRPBF against official documentation, as these indicate different tape and reel quantities (500-piece vs 2,500-piece). Confirm that the 'LI' code corresponds to the required power-on reset behavior (mid-scale in internal reference mode) and the 'L' designation for the 2.5V full-scale range. Ensure the component meets the commercial temperature range requirements (0°C to 70°C) specified for the C-grade variant.

Selection Notes

Select this part when a dual-channel, high-accuracy DAC is needed in a compact TSOT-23 footprint. The 'A' grade ensures tighter linearity performance (±1.5LSB INL) compared to standard grades. Choose the 'LI' suffix if the application requires the outputs to initialize to mid-scale upon power-up while using the internal reference. Verify that the system supply voltage remains within the 2.7V to 5.5V range for proper operation.

Part Context

This component belongs to the LTC2632 family, which offers various combinations of resolution (8-, 10-, 12-bit), accuracy grades, and power-on reset options. The LTC2632ACTS8-LI12#TRPBF specifically denotes the 12-bit resolution, 'A' accuracy grade, 'L' full-scale voltage (2.5V), 'I' power-on reset mode (mid-scale internal), and TSOT-23 package type.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult Analog Devices for potential cross-references or alternative parts within the same family that match specific reset or accuracy requirements.