LTC2636HMS-HMI12#TRPBF

Overview

The LTC2636HMS-HMI12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) in a 16-lead MSOP package. It features an integrated 4.096V full-scale reference with a 10ppm/°C drift coefficient. The device operates from a 4.5V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 125°C automotive temperature range. Communication occurs via a 50MHz SPI/MICROWIRE-compatible 3-wire serial interface. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Octal 12-bit resolution with ±2.5LSB maximum integral nonlinearity error
• Integrated 4.096V full-scale reference with 10ppm/°C temperature coefficient
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk (<2.4nV•s)
• Automotive grade operation from –40°C to 125°C

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems
• Optical Networking

Procurement Notes

Verify the H-grade designation confirms the –40°C to 125°C operating range and 4.5V minimum supply requirement. Confirm the MS suffix indicates the 16-lead MSOP package with LDAC and CLR pins. Ensure the TRPBF suffix matches the required tape and reel quantity of 2500 units.

Selection Notes

Select this part for applications requiring eight independent channels with high accuracy and wide temperature tolerance. The H-grade variant necessitates a supply voltage between 4.5V and 5.5V, unlike the L-grade which supports 2.7V. Choose MI suffix if mid-scale power-on reset is required for system initialization stability.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also includes 10-bit and 8-bit variants. The family shares identical pinouts and interface protocols but differs in resolution, linearity specifications, and internal reference full-scale voltages (2.5V for L-grade, 4.096V for H-grade).

Replacement Considerations

Direct substitutes within the same package and specification include LTC2636IMS-HMI12#TRPBF (Industrial grade, –40°C to 85°C) or LTC2636CDE-HMI12#TRPBF (Commercial grade, DFN package). Cross-family replacements like LTC2637 require I2C interface adaptation.