LTC2637HMS-HMI10#PBF

Overview

The LTC2637HMS-HMI10#PBF is an octal, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 125°C temperature range. Communication occurs via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates 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 10-bit resolution and 4.096V full-scale output
• Integrated 10ppm/°C precision reference with rail-to-rail output buffers
• I2C-compatible serial interface with selectable slave addresses via CA0-CA2 pins
• 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 package type matches the 16-lead MSOP specification for this part number. Confirm the temperature grade corresponds to the H suffix, indicating operation from –40°C to 125°C. Ensure the ordering suffix aligns with the required power-on reset behavior and resolution specifications before procurement.

Selection Notes

Select this component when eight independent DAC channels are required within a compact footprint. The H-grade variant is suitable for automotive or high-temperature industrial environments requiring operation up to 125°C. The internal reference simplifies design by eliminating external reference components, provided the 4.5V minimum supply constraint is met.

Part Context

This part belongs to the LTC2637 family, which also offers 12-bit and 8-bit resolutions. Variants exist with 2.5V full-scale outputs (LTC2637-L) operating from 2.7V supplies. Other packages include the 14-lead DFN. The HMI10 designation specifically denotes the 10-bit resolution, 4.096V reference, and mid-scale reset configuration.

Replacement Considerations

Direct substitutes within the same family include LTC2637HMX10#PBF (external reference mode) or LTC2637HZ10#PBF (zero-scale reset). For different resolutions, consider LTC2637HMI12#PBF or LTC2637HMI8#PBF. Cross-family replacements require verification of pin compatibility and interface protocols.