LTC2637IMS-LMI8#TRPBF

Overview

The LTC2637IMS-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 full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V. It communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±0.5 LSB, a settling time of 4.1µs, and double-buffered data latches for glitch-free updates.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels
• Integrated 2.5V precision reference with 10ppm/°C drift
• Ultralow DAC-to-DAC crosstalk (<3nV•s)
• Double-buffered data latches and guaranteed monotonicity

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel packaging format containing 2500 pieces. Confirm the IMS designation corresponds to the 16-lead MSOP package type. Ensure the LMI8 code matches the required 8-bit resolution and mid-scale power-on reset configuration before procurement.

Selection Notes

Select this part when eight low-cost, low-power DAC channels are required in a compact footprint. The 8-bit resolution suits applications where high precision is not critical but channel count is. Verify that the 2.5V internal reference range meets system requirements; otherwise, consider external reference options or higher voltage variants like the LTC2637-H series.

Part Context

This component belongs to the LTC2637 family, which includes 12-bit, 10-bit, and 8-bit versions. The 'I' grade denotes an industrial temperature range of –40°C to 85°C. The 'MS' package option provides a 16-lead Mini Small Outline Package, offering a smaller form factor compared to the 14-lead DFN alternative while maintaining identical electrical performance.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2637IMS-LMI10#TRPBF (10-bit) and LTC2637IMS-LMI12#TRPBF (12-bit). For different reset behaviors, consider LTC2637IMS-LZM8#TRPBF (zero-scale reset) or LTC2637IMS-LXM8#TRPBF (external reference mode). Higher voltage variants require 4.5V minimum supply.