LTC2637HMS-LMI12#PBF

Overview

The LTC2637HMS-LMI12#PBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single 4.5V to 5.5V supply and utilizes 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 ±2.5LSB, rail-to-rail buffered outputs, and guaranteed monotonicity over the automotive temperature range of –40°C to 125°C.

Feature Summary

• Octal 12-bit resolution with integrated 4.096V internal reference
• Automotive grade performance (-40°C to 125°C)
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• Power-on reset configured for mid-scale output in internal reference mode

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel precision
• Mobile communications infrastructure
• Optical networking applications

Procurement Notes

Verify the specific ordering suffix LMI12#PBF against official Analog Devices documentation to confirm the power-on reset behavior (mid-scale), package type (16-lead MSOP), and resolution (12-bit). Ensure compatibility with the required 4.5V to 5.5V supply voltage range for the H-grade variant before procurement.

Selection Notes

Select this component when eight independent 12-bit voltage outputs are required in a compact surface-mount package. The H-grade designation ensures operation across the extended automotive temperature range. Verify that the system supply voltage remains within the 4.5V to 5.5V window to maintain specified performance levels.

Part Context

This part belongs to the LTC2637 family of octal DACs, which also includes 8-bit and 10-bit variants. The 'H' suffix denotes the automotive temperature grade, while 'MS' indicates the 16-lead MSOP package. The 'LMI12' code specifies the 12-bit resolution and the mid-scale power-on reset configuration.

Replacement Considerations

Direct substitutes within the same family include LTC2637HMS-LZ12#PBF (zero-scale reset) or LTC2637HMS-HZ12#PBF (DFN package). Cross-package replacements like LTC2637HDE-LMI12#PBF require pinout verification due to the difference between MSOP and DFN footprints.