LTC2636IMS-LMI8#TRPBF

Overview

The LTC2636IMS-LMI8#TRPBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a rail-to-rail output buffer and an integrated 10ppm/°C reference with a 2.5V full-scale output. The device operates on a single 2.7V to 5.5V supply and communicates via a 3-wire SPI/MICROWIRE interface with clock rates up to 50MHz. It includes double-buffered data latches and power-on reset to mid-scale in internal reference mode. Packaged in a 16-lead MSOP, it ensures monotonicity over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent DAC channels with guaranteed monotonicity and ±0.5 LSB DNL.
• Integrated Reference: Features a low-drift 10ppm/°C internal reference setting a 2.5V full-scale output.
• High-Speed Interface: Supports 3-wire SPI/MICROWIRE communication with SCK frequencies up to 50MHz.
• Power-On Reset: Resets outputs to mid-scale upon power-up when using the internal reference.

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the IMS designation corresponds to the 16-lead MSOP package and the I grade for the –40°C to 85°C operating temperature range. Ensure compatibility with the required 2.7V to 5.5V supply voltage for the L-grade variant specifications.

Selection Notes

Select this part for applications requiring multiple low-cost, low-power DAC channels in a compact surface-mount package. Choose the L-grade variant for operation down to 2.7V. Consider the H-grade if a 4.096V full-scale output is needed, noting the higher minimum supply voltage requirement of 4.5V. Verify that the mid-scale power-on reset behavior aligns with system initialization requirements.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also offers 10-bit and 12-bit resolutions. Variants exist with different power-on reset behaviors (zero-scale or mid-scale) and external reference support. The MSOP package provides dedicated LDAC and CLR pins not available in the DFN version, allowing for asynchronous updates and hardware clearing.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2636 variants such as LTC2636IMS-LMX8#TRPBF (external reference mode) or LTC2636IMS-LZ8#TRPBF (zero-scale reset). For different resolutions, LTC2636IMS-LMI10#TRPBF or LTC2636IMS-LMI12#TRPBF may be considered if performance metrics are sufficient.