LTC2637CMS-LZ12#TRPBF

Overview

The LTC2637CMS-LZ12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 2.5V full-scale internal reference with a 10ppm/°C temperature coefficient and operates on a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to zero-scale in internal reference mode. Communication is handled via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It is housed in a 16-lead MSOP package.

Feature Summary

• Octal 12-bit resolution with ±2.5LSB maximum integral nonlinearity error
• Integrated 2.5V precision reference with 10ppm/°C drift
• Rail-to-rail buffered outputs with ultralow crosstalk (<3nV•s)
• Power-on reset to zero-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'C' grade corresponds to the commercial temperature range of 0°C to 70°C. Ensure the 'L' designation matches the required 2.5V full-scale output specification for the target application design.

Selection Notes

Select this part for applications requiring multiple low-power, high-accuracy voltage outputs controlled by an I2C bus. The 12-bit resolution and integrated reference simplify design compared to external reference solutions. Consider the 16-lead MSOP package dimensions for PCB layout constraints and verify that the 2.7V to 5.5V supply range aligns with the system power architecture.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also offers 10-bit and 8-bit resolutions. Variants exist with different full-scale voltages (2.5V or 4.096V), power-on reset behaviors, and temperature grades. The CMS-LZ12 variant specifically combines the commercial grade, MSOP package, zero-scale reset, and 12-bit resolution.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-LZ12#PBF (tube packaging) or LTC2637CMS-LZ10#TRPBF (10-bit resolution). Cross-family replacements require verifying pin compatibility and electrical specifications against the original design requirements.