LTC2637IDE-LMI12#TRPBF

Overview

The LTC2637IDE-LMI12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a 10ppm/°C temperature coefficient, 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 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 eight independent 12-bit DAC channels
• Integrated 2.5V precision reference with ±10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic over the operating range
• Ultralow crosstalk between DACs (<3nV•s typical)

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'I' grade corresponds to the industrial temperature range of –40°C to 85°C. Ensure the 'L' designation matches the required 2.5V full-scale output specification derived from the internal reference.

Selection Notes

Select this part when eight synchronized voltage outputs are required with high linearity. The 12-bit resolution provides ±2.5 LSB maximum INL error. Choose the L-grade variant for lower supply voltages starting at 2.7V. Verify that the I²C address configuration pins (CA0, CA1, CA2) can be set appropriately for the target system bus topology.

Part Context

This component belongs to the LTC2637 family, which also offers 10-bit and 8-bit resolutions. Variants exist with 4.096V full-scale outputs (H-grade) or different power-on reset behaviors (Z or MX suffixes). The MSOP package distinguishes it from the smaller 14-lead DFN option available in the same product family.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-LMI12#TRPBF (identical electrical specs, different manufacturer marking potentially) or other resolution variants like LTC2637IMS-LMI10#TRPBF if lower precision is acceptable. Cross-package replacements require verifying pin compatibility between MSOP and DFN footprints.