LTC2636CMS-LMX8#TRPBF

Overview

The LTC2636CMS-LMX8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 16-lead MSOP package and operates on a single supply of 2.7V to 5.5V. The device includes double-buffered data latches, ultralow crosstalk between DACs (<2.4nV•s), and a rail-to-rail output buffer guaranteed monotonic over the temperature range. It utilizes an SPI/MICROWIRE-compatible 3-wire serial interface with clock rates up to 50MHz. The part number suffix 'LMX' indicates a mid-scale reset in external reference mode upon power-up.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent 8-bit DAC channels with ±0.5 LSB DNL and ±0.05 LSB INL.
• External Reference Mode: Configured for mid-scale reset when using an external reference voltage.
• Low Power Consumption: Draws 0.9mA at 3V supply with internal reference; supports power-down modes.
• High-Speed Interface: Communicates via SPI/MICROWIRE compatible 3-wire serial interface operating at up to 50MHz.

Applications

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

Procurement Notes

Verify the specific ordering suffix LMX corresponds to the required power-on reset behavior (mid-scale in external reference mode). Confirm the MSOP package type matches the PCB footprint requirements. Ensure the commercial temperature grade (0°C to 70°C) meets the operational environment specifications. Check for RoHS compliance documentation if required by manufacturing standards.

Selection Notes

Select this component when eight independent 8-bit voltage outputs are needed in a compact 16-lead MSOP package. Choose the LMX variant specifically if the system requires outputs to settle at mid-scale during power-up when an external reference is used. Consider the LTC2636CDE-LMX8 if a 14-lead DFN package is preferred instead of MSOP. Verify that the 2.7V to 5.5V supply range aligns with the system power architecture.

Part Context

This part belongs to the LTC2636 family of octal DACs, which also includes 10-bit and 12-bit variants. The 'C' denotes the commercial temperature grade (0°C to 70°C), while 'I' and 'H' denote industrial and automotive grades respectively. The 'MS' indicates the 16-lead MSOP package, distinct from the 14-lead DFN ('DE') package. The '#TRPBF' suffix indicates tape and reel packaging with lead-free construction.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2636 variants with different resolutions or reset behaviors, such as LTC2636CMS-LMI8#TRPBF (internal reference mid-scale reset) or LTC2636CMS-LZ8#TRPBF (zero-scale reset). For different packages, the LTC2636CDE-LMX8#TRPBF offers the same electrical characteristics in a 14-lead DFN form factor.