LTC2635HMSE-HMI10#PBF

Overview

The LTC2635HMSE-HMI10#PBF is a quad 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 10-lead MSOP package. 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 supply ranging from 4.5V to 5.5V and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and a power-on reset circuit configured to initialize outputs to mid-scale.

Feature Summary

• Quad 10-bit DAC architecture with integrated 4.096V precision reference
• Automotive temperature grade (-40°C to 125°C) with guaranteed monotonicity
• I²C interface with selectable internal or external reference input
• Power-on reset to mid-scale with low noise performance (0.75mV P-P)

Applications

• Process control and industrial automation systems
• Portable equipment requiring low power consumption
• Automotive electronic modules
• Power supply margining applications

Procurement Notes

Verify the specific ordering suffix HMI10 corresponds to the mid-scale reset configuration for the 10-bit resolution variant. Confirm the MSE package designation matches the 10-lead MSOP physical footprint requirements for the target PCB layout. Ensure the H-grade specification aligns with the required 4.5V to 5.5V supply voltage constraints for the application environment.

Selection Notes

Select this component when a quad-channel DAC with high accuracy and automotive reliability is required. The 10-bit resolution offers a balance between cost and precision, suitable for applications not demanding 12-bit granularity. The internal 4.096V reference simplifies design by eliminating external reference components, provided the supply voltage remains within the 4.5V to 5.5V range specified for the H-grade device.

Part Context

This part belongs to the LTC2635 family, which also includes 8-bit and 12-bit variants (LTC2635-L and LTC2635-H series). The HMSE suffix indicates the H-grade automotive temperature rating and the MSE 10-lead MSOP package. Other options include the L-grade for lower voltage operation (2.7V–5.5V) and different reset configurations such as zero-scale (Z) or high-impedance (MO).

Replacement Considerations

Direct substitutes within the same family include LTC2635HMSE-HMI12#PBF (12-bit) or LTC2635HMSE-HMI8#PBF (8-bit), maintaining identical pinouts and functionality with varying resolution. For external reference applications, the LMX suffix variants provide equivalent electrical characteristics with mid-scale reset behavior.