LTC2637IDE-LMI8#TRPBF

Overview

The LTC2637IDE-LMI8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes double-buffered data latches and a power-on reset circuit configured to reset outputs to mid-scale in internal reference mode. The component is housed in a 16-lead MSOP package and is rated for industrial temperatures between –40°C and 85°C.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels
• Integrated 10ppm/°C precision reference yielding 2.5V full-scale output
• Rail-to-rail output buffers guaranteed monotonic over the operating temperature range
• Ultralow crosstalk between DACs (<3nV•s) and double-buffered data latches

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging configuration containing 2500 pieces. Confirm the 'I' grade designation matches the required industrial temperature range of –40°C to 85°C for the specific application environment. Ensure the LMI10 power-on reset setting aligns with system startup requirements.

Selection Notes

Select this part when eight low-channel-count DACs are needed with minimal inter-channel interference. The 8-bit resolution suits applications where high precision is not critical but channel count is. Verify that the 2.5V internal reference span fits the downstream signal requirements or allows for external reference operation if a different voltage span is necessary.

Part Context

This component belongs to the LTC2637 family, which offers 12-, 10-, and 8-bit resolutions in both DFN and MSOP packages. The 'IDE' prefix indicates the Industrial temperature grade and MSOP package type. The 'LMI8' suffix specifies the 8-bit resolution, Mid-Scale internal reference power-on reset behavior, and 2.5V full-scale output capability.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-LZ8#TRPBF (Zero-Scale reset) or LTC2637IMS-HMI8#TRPBF (4.096V full-scale). Cross-resolution variants like LTC2637IMS-LMI10#TRPBF share the pinout but offer higher accuracy.