LTC2635CMSE-HMI8#TRPBF

Overview

The LTC2635CMSE-HMI8#TRPBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and utilizes 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 8-Bit Resolution with Integrated 2.5V Precision Reference
• Rail-to-Rail Output Buffers and Guaranteed Monotonicity
• I²C Interface with Standard and Fast Mode Support
• Power-On Reset to Mid-Scale in Internal Reference Mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Power Supply Margining
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix HMI8#TRPBF against the manufacturer's current documentation to confirm package type, temperature grade, and reset configuration. Ensure compatibility with system voltage requirements and I²C bus specifications before integration.

Selection Notes

Select this component for applications requiring four independent 8-bit DAC channels with low noise and high accuracy. The internal 2.5V reference simplifies design by eliminating external reference components. Verify that the 2.7V to 5.5V supply range aligns with the target system power architecture.

Part Context

This part belongs to the LTC2635 family of quad DACs, which also offers 10-bit and 12-bit resolutions. Variants include the LTC2635-L series with a 2.5V full-scale output and the LTC2635-H series with a 4.096V full-scale output. The MSE package denotes a 10-lead MSOP form factor.

Replacement Considerations

Compatible substitutes within the same family include the LTC2635CMSE-HMI10#TRPBF and LTC2635CMSE-HMI12#TRPBF for higher resolution needs. For different reset behaviors, consider the LTC2635CMSE-HZ8#TRPBF (zero-scale reset) or LTC2635CMSE-HMX8#TRPBF (external reference mid-scale reset).

FAQ

What is the default state of the DAC outputs upon power-up?

The LTC2635CMSE-HMI8#TRPBF is configured with a power-on reset that initializes all DAC outputs to mid-scale when operating in internal reference mode.

Can the full-scale output voltage be adjusted externally?

Yes, while this specific part uses an internal reference for a 2.5V full-scale output, the device supports an external reference input on the REF pin to set the full-scale voltage.

What is the maximum clock frequency for the I²C interface?

The device supports both standard mode at 100kHz and fast mode at 400kHz for the SCL clock input.