LTC2637HMS-HMI10#TRPBF

Overview

The LTC2637HMS-HMI10#TRPBF is an octal, 10-bit voltage-output digital-to-analog converter (DAC) in a 16-lead MSOP package. It features an integrated precision reference providing a 4.096V full-scale output and operates from a 4.5V to 5.5V supply. The device communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 4.3µs, and ultralow DAC-to-DAC crosstalk of 3nV•s. It incorporates double-buffered data latches and a power-on reset circuit configured to initialize outputs to mid-scale.

Feature Summary

• Octal architecture with 10-bit resolution and rail-to-rail output buffers
• Integrated 4.096V precision reference with 10ppm/°C drift
• I2C-compatible serial interface with selectable slave addresses
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the H-grade temperature rating (-40°C to 125°C) and MSOP-16 package configuration against design requirements. Confirm that the 4.5V minimum supply voltage aligns with the system power rails. Ensure the I2C bus pull-up resistors are selected to support the required clock frequency without exceeding input leakage specifications.

Selection Notes

Select this part for applications requiring multiple low-drift voltage outputs with minimal board space. The H-grade variant is suitable for automotive or high-temperature environments where the -40°C to 125°C range is mandatory. Compare against the LTC2637-L series if a lower 2.7V supply voltage or 2.5V full-scale output is preferred for reduced power consumption.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also includes 8-bit and 12-bit variants. The 'H' suffix denotes the automotive temperature grade, while 'M' indicates the MSOP package. The 'I10' specifies the 10-bit resolution and mid-scale power-on reset behavior. Other packages include the 14-lead DFN, and other reset options include zero-scale initialization.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC2637HMS-HMX10#TRPBF (external reference mode) and the LTC2637HMS-HZ10#TRPBF (zero-scale reset). For different resolutions, the LTC2637HMS-HMI12#TRPBF (12-bit) and LTC2637HMS-HMI8#TRPBF (8-bit) share the same footprint and interface.