LTC2636IMS-LMI12#TRPBF

Overview

The LTC2636IMS-LMI12#TRPBF is an octal 12-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 operates on a single 2.7V to 5.5V supply. The device utilizes a 3-wire SPI/Microwire-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches, hardware clear (CLR), and asynchronous DAC update (LDAC) pins. The part is housed in a 16-lead MSOP package and guarantees monotonic operation over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with maximum INL error of ±2.5 LSB.
• Integrated Precision Reference: Features a 10ppm/°C internal reference setting a 2.5V full-scale output.
• Rail-to-Rail Output Buffer: Delivers rail-to-rail voltage outputs with ultralow crosstalk between DACs (<2.4nV•s).
• Flexible Control Interface: Supports SPI/Microwire communication at 50MHz with hardware CLR and LDAC control.

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel packaging configuration containing 2500 pieces. Confirm that the IMS designation corresponds to the 16-lead MSOP package type and the I grade specifies the industrial temperature range. Ensure the LMI12 suffix matches the required mid-scale power-on reset behavior and 12-bit resolution for the design.

Selection Notes

Select this component when eight independent 12-bit channels are required within a compact footprint. The LMI12 variant is appropriate for systems needing a mid-scale power-on reset state using the internal 2.5V reference. Consider the 16-lead MSOP package if exposed pad soldering constraints favor this form factor over the DFN option. Verify supply voltage compatibility with the 2.7V to 5.5V operating range.

Part Context

This part belongs to the LTC2636 family of octal DACs, which also offers 10-bit and 8-bit resolutions. Variants exist with different power-on reset behaviors (Zero-Scale or Mid-Scale) and external reference capabilities. The H-grade versions support higher full-scale voltages but require stricter supply sequencing. This specific model targets industrial applications requiring high channel density and precise analog output control.

Replacement Considerations

Direct substitutes within the same family include LTC2636IMS-LMX12#TRPBF for external reference mode or LTC2636IMS-LZ12#TRPBF for zero-scale reset. Lower resolution options like LTC2636IMS-LMI10#TRPBF may be used if 12-bit accuracy is not critical. Cross-family replacements such as the LTC2637 offer I2C interfaces instead of SPI.