LTC2636CMS-LMX10#PBF

Overview

The LTC2636CMS-LMX10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 16-lead MSOP package and operates within a supply voltage range of 2.7V to 5.5V. The device includes an integrated high-accuracy reference with a temperature coefficient of 10ppm/°C, setting the full-scale output to 2.5V in internal reference mode. It utilizes a 3-wire SPI/MICROWIRE-compatible serial interface for communication. Key electrical characteristics include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 4.0µs at 3V, and a typical supply current of 0.9mA. The unit is guaranteed monotonic over its operating temperature range.

Feature Summary

• Octal architecture providing eight independent 10-bit DAC channels in a single package
• Integrated 10ppm/°C reference establishing a 2.5V full-scale output range
• Power-on reset configured to mid-scale when using external reference mode
• Rail-to-rail output buffers with ultralow crosstalk between DACs (<2.4nV•s)

Applications

• Mobile communications systems requiring multi-channel signal generation
• Process control and industrial automation instrumentation
• Automatic test equipment needing precise analog voltage outputs
• Portable battery-powered equipment due to low power consumption

Procurement Notes

Verify the specific ordering suffix LMX10 against the manufacturer's official documentation to confirm the power-on reset behavior and reference mode configuration. Ensure the procurement channel provides genuine components from Analog Devices or authorized distributors to guarantee performance specifications and reliability standards are met.

Selection Notes

Select this component when eight independent voltage outputs are required with 10-bit resolution. The LMX suffix indicates mid-scale reset in external reference mode; choose LZ for zero-scale reset or MI for mid-scale reset in internal reference mode. Verify that the system supply voltage falls within the 2.7V to 5.5V range and that the MSOP package dimensions fit the PCB layout constraints.

Part Context

This part belongs to the LTC2636 family of octal DACs, which also includes variants with 8-bit and 12-bit resolutions. Other members of the family utilize different packages such as the 14-lead DFN or offer higher voltage ranges like the LTC2636-H series with a 4.096V full-scale output. The CMS designation specifically identifies the commercial temperature grade and MSOP packaging format.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the LTC2636CMS-LMI10#PBF and LTC2636CMS-LZ10#PBF. These alternatives share identical electrical parameters but differ in their power-on reset behavior and default reference mode configurations. Verify software compatibility if the reset state upon power-up is critical to the application.