LTC2636CDE-HMX10#TRPBF

Overview

The LTC2636CDE-HMX10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 14-lead DFN package and operates within a supply voltage range of 4.5V to 5.5V. The device includes an integrated internal reference with a temperature coefficient of 10ppm/°C, setting the full-scale output to 4.096V. It utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. Power-on reset is configured to mid-scale in external reference mode. Key electrical parameters include a settling time of 4.3µs at ±1LSB for 10-bit resolution, a maximum integral nonlinearity (INL) of ±1LSB, and a typical DAC-to-DAC crosstalk of less than 2.4nV•s.

Feature Summary

• Octal architecture providing eight independent 10-bit voltage outputs in a single 14-lead DFN package.
• Integrated high-accuracy reference with 10ppm/°C drift, establishing a 4.096V full-scale output range.
• Power-on reset logic defaults outputs to mid-scale when operating in external reference mode.
• Ultralow inter-channel crosstalk specification of typically 2.4nV•s between adjacent DAC channels.

Applications

• Process control and industrial automation systems requiring multi-channel signal generation.
• Automatic test equipment utilizing precise voltage references for channel calibration.
• Optical networking infrastructure needing stable analog signal conditioning.

Procurement Notes

Verify the specific ordering suffix HMX10#TRPBF against official Analog Devices documentation to confirm the mid-scale external reference power-on reset behavior and tape-and-reel packaging quantity. Ensure the host system supply voltage remains strictly between 4.5V and 5.5V to meet specified performance characteristics. Confirm that the 14-lead DFN footprint matches the PCB layout requirements, specifically noting the exposed ground pad connection.

Selection Notes

Select this component when eight synchronized voltage outputs are required with moderate 10-bit resolution. The H-grade designation indicates suitability for automotive applications operating up to 125°C. Choose this part over the L-grade variant if the application requires a higher 4.096V full-scale output range rather than 2.5V. Verify compatibility with the system's SPI clock speed, which supports frequencies up to 50MHz.

Part Context

This device belongs to the LTC2636 family of octal DACs, which also offers 8-bit and 12-bit resolutions. Variants exist with different power-on reset behaviors (zero-scale or mid-scale internal reference) and full-scale voltages (2.5V or 4.096V). The CDE package denotes the commercial temperature grade (0°C to 70°C) in a 14-lead DFN form factor, distinct from the MSOP package options available in the same series.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Evaluation of alternative octal DACs should focus on matching the 10-bit resolution, 4.096V full-scale range, and 14-lead DFN package dimensions.