LTC2636IDE-LMI10#PBF

Overview

The LTC2636IDE-LMI10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a 10ppm/°C drift rate, providing a full-scale output of 2.5V. The device operates on a single 2.7V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the temperature range. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. This specific variant belongs to the Industrial temperature grade (-40°C to +85°C) and utilizes a 14-lead DFN package.

Feature Summary

• Octal architecture with 8 independent 10-bit DAC channels
• Integrated 10ppm/°C reference yielding 2.5V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (<2.4nV•s)
• Industrial temperature range (-40°C to +85°C) in 14-lead DFN package

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel precision
• Portable battery-powered instrumentation
• Mobile communications infrastructure

Procurement Notes

Verify the suffix #PBF indicates lead-free construction compliant with RoHS standards. Confirm the IDE designation corresponds to the Industrial temperature grade (-40°C to +85°C) and the LMI10 configuration specifies mid-scale power-on reset with internal reference mode. Ensure the 14-lead DFN footprint matches the PCB layout requirements.

Selection Notes

Select this part for applications requiring eight synchronized analog outputs with high accuracy. The 10-bit resolution offers a balance between cost and performance compared to 12-bit variants. The internal reference simplifies design by eliminating external components, while the 2.5V span suits low-voltage single-supply systems. Verify that the 50MHz serial interface speed meets the system's data throughput requirements.

Part Context

This component is part of the LTC2636 family, which includes 8-bit, 10-bit, and 12-bit resolutions. Variants are available in both DFN and MSOP packages, with options for 2.5V or 4.096V full-scale outputs. The 'I' suffix denotes the industrial temperature grade, distinguishing it from commercial (C) and automotive/high-temp (H) grades within the same product line.

Replacement Considerations

Direct pin-compatible substitutes include other LTC2636 variants with different resolutions (LTC2636IDE-LMI8 or LTC2636IDE-LMI12) if bit-depth adjustments are acceptable. For external reference configurations, consider the LTC2636IDE-LMX10#PBF. Cross-family replacements like the LTC2637 offer I2C interfaces but require schematic modifications.