LTC2634HUD-HMX10#TRPBF

Overview

The LTC2634HUD-HMX10#TRPBF is a quad 10-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 operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C automotive temperature range, and low drift of 10ppm/°C. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. This specific variant resets to mid-scale in external reference mode upon power-up.

Feature Summary

• Quad 10-bit DACs with integrated 4.096V precision reference
• Automotive grade (-40°C to 125°C) with AEC-Q100 qualification
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the H suffix confirms the 4.5V minimum supply requirement for the 4.096V full-scale output. Confirm the MUX suffix indicates mid-scale reset in external reference mode. Ensure the TRPBF suffix matches the required tape and reel packaging format for automated assembly.

Selection Notes

Select this part when a 4.096V full-scale range is required with an external reference configuration. The H-grade ensures operation across the full automotive temperature spectrum. Verify that the 4.5V to 5.5V supply range aligns with the system power architecture, as lower voltages are insufficient for this full-scale option.

Part Context

This component belongs to the LTC2634 family, which offers quad DACs in 12-, 10-, and 8-bit resolutions. The HUD package denotes a 16-lead QFN form factor. The H suffix specifies the 4.096V internal reference capability, while the MUX suffix defines the specific power-on reset behavior for external reference applications within the automotive grade tier.

Replacement Considerations

LTC2634IUD-HMX10#TRPBF: Identical electrical specifications but limited to industrial temperature range (-40°C to 85°C).

FAQ

What is the settling time for the LTC2634 at 5V supply?

The typical settling time to ±1LSB (10-bit) is 4.2µs at VCC = 5V.

How does the MUX suffix affect power-on behavior?

The MUX suffix configures the device to reset to mid-scale in external reference mode after power-up.

What is the maximum INL error for the 10-bit version?

The maximum Integral Nonlinearity (INL) error is ±1 LSB for the 10-bit resolution variants.