LTC2637CMS-HZ12#TRPBF

Overview

The LTC2637CMS-HZ12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a high-accuracy, low-drift internal reference with a full-scale output of 4.096V and operates from a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers guaranteed monotonic over the temperature range. It communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. This specific part number indicates a commercial temperature grade (0°C to 70°C), housed in a 14-lead DFN package, with power-on reset configured to zero-scale in internal reference mode.

Feature Summary

• Octal 12-bit resolution with integrated 4.096V full-scale precision reference
• Rail-to-rail output buffers guaranteed monotonic over operating temperature
• I2C-compatible serial interface with selectable internal or external reference
• Power-on reset circuit configurable to zero-scale or mid-scale

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the component matches the specified commercial temperature grade (0°C to 70°C) and the 14-lead DFN package configuration. Confirm the ordering suffix corresponds to the tape and reel packaging format as indicated by the #TR designation. Ensure the internal reference setting aligns with the required zero-scale power-on reset behavior for the application design.

Selection Notes

Select this part when eight independent 12-bit voltage outputs are required within a compact footprint. The 4.096V full-scale range suits applications needing higher dynamic range than the 2.5V variant. Verify that the system supply voltage falls within the 4.5V to 5.5V range required for the H-grade internal reference operation. Consider the I2C address configuration options provided by the CA pins if multiple devices share the bus.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also offers 10-bit and 8-bit resolutions. Variants exist with different internal reference voltages (2.5V or 4.096V), temperature grades (Commercial, Industrial, Automotive), and package types (DFN or MSOP). The CMS suffix denotes the Commercial temperature grade and MSOP package, but the DE suffix in the datasheet order information indicates DFN; careful verification of the package type against the specific suffix code is necessary as datasheets may list variations.

Replacement Considerations

Direct substitutes include other members of the LTC2637 family such as the LTC2637IMS-HZ12#PBF for industrial temperature grade or different packaging. Cross-compatibility depends on matching the resolution, reference voltage, and I2C interface requirements.