LTC2637IDE-LMX8#TRPBF

Overview

The LTC2637IDE-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 within the industrial temperature range of –40°C to 85°C. The device utilizes an external reference input, setting the full-scale output voltage to the applied REF pin level. It incorporates double-buffered data latches and a power-on reset circuit configured to initialize outputs to mid-scale when using an external reference. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels
• External reference mode with mid-scale power-on reset configuration
• Rail-to-rail output buffers guaranteed monotonic over temperature
• Ultralow DAC-to-DAC crosstalk (<3nV•s typical)

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automotive electronic modules
• Optical networking signal generation

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'I' grade designation matches the required –40°C to 85°C operating environment. Ensure the external reference voltage supplied to the REF pin falls within the valid input range of 1V to VCC for proper operation.

Selection Notes

Select this part when eight low-channel-count DACs are needed in a compact surface-mount footprint. The LMX variant is appropriate if mid-scale initialization upon power-up is required for external reference applications. Compare settling times and noise specifications against other family members like the LTC2637L series if lower supply voltages or internal references are preferred.

Part Context

This component belongs to the LTC2637 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The IDE prefix denotes the Industrial temperature grade and MSOP package type. Other variants include the LTC2637CDE for commercial temperatures and LTC2637HMS for automotive-grade high-temperature performance up to 125°C.

Replacement Considerations

Direct functional substitutes within the same family include LTC2637IMS-LMX8#TRPBF (same specs, different manufacturer lot history) or LTC2637CMS-LMX8#TRPBF for commercial temperature ranges. Cross-family replacements require verifying pin compatibility and I²C address configurations.