LTC2637IMS-HMI12#TRPBF

Overview

The LTC2637IMS-HMI12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single 4.5V to 5.5V supply and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to reset to mid-scale in internal reference mode.

Feature Summary

• Octal architecture with 8 independent 12-bit DAC channels
• Integrated 4.096V precision reference with ±10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C
• Ultralow DAC-to-DAC crosstalk (<3nV•s)

Applications

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

Procurement Notes

Verify the H-grade automotive temperature rating (-40°C to 125°C) and MSOP-16 package configuration. Confirm the #TRPBF suffix indicates tape and reel packaging. Ensure the I2C address pins (CA0, CA1, CA2) are correctly terminated for the target system topology.

Selection Notes

Select this part when eight high-precision voltage outputs are required within a compact footprint. The H-grade variant is necessary for applications operating above 85°C. Use the external reference pin if a different full-scale voltage than 4.096V is needed, though the internal reference provides superior stability.

Part Context

This component belongs to the LTC2637 family, which offers 12-, 10-, and 8-bit resolutions. The IMS designation specifies the 16-lead MSOP package, while the H suffix denotes the extended automotive temperature range. Other variants include the DE package and L-grade for lower voltage operation.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-LMI12#TRPBF for 2.5V operation or LTC2637IDE-HMI12#PBF for DFN packaging. Cross-vendor replacements require matching the 8-channel count, I2C interface, and 12-bit resolution.