LTC2637IDE-HMI12#TRPBF

Overview

The LTC2637IDE-HMI12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a 4.096V full-scale output and a temperature coefficient of 10ppm/°C. The device operates on a single 4.5V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 85°C industrial temperature range. Communication is handled via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Octal 12-bit resolution with maximum integral nonlinearity error of ±2.5LSB
• Integrated 4.096V precision reference with 10ppm/°C drift
• Ultralow DAC-to-DAC crosstalk (<3nV•s)
• Double-buffered data latches for glitch-free updates

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify that the #TRPBF suffix confirms tape and reel packaging containing 2500 pieces. Confirm the 'I' grade designation matches the required –40°C to 85°C operating temperature range. Ensure the 'H' variant specification aligns with the 4.5V to 5.5V supply requirement, as it differs from the 2.7V capable 'L' variants.

Selection Notes

Select this part when eight independent 12-bit channels are required in a compact footprint. The H-grade version is necessary for applications requiring a 4.096V full-scale output, whereas the L-grade provides 2.5V. The MI power-on reset option initializes outputs to mid-scale, which may be preferred over zero-scale depending on system safety requirements.

Part Context

This component belongs to the LTC2637 family, which offers 12-, 10-, and 8-bit resolutions. The specific model utilizes the 16-lead MSOP package. Other package options include the 14-lead DFN. Variations exist for different supply ranges (L vs H) and reset behaviors (Z, MX, MI).

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-HMI12#PBF (tube packaging) or lower resolution variants like LTC2637IMS-HMI10#TRPBF if 10-bit accuracy suffices. Verify pin compatibility and thermal characteristics when substituting between DFN and MSOP packages.