LTC2637IMS-HMX12#TRPBF

Overview

The LTC2637IMS-HMX12#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 10ppm/°C temperature coefficient, providing a full-scale output of 4.096V. The device operates on a single 4.5V to 5.5V supply 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 external reference mode. The component is housed in a 16-lead MSOP package.

Feature Summary

• Octal 12-bit resolution with rail-to-rail buffered outputs
• Integrated 4.096V precision reference with ±10ppm/°C drift
• Ultralow DAC-to-DAC crosstalk (<3nV•s)
• Guaranteed monotonic operation over –40°C to 125°C

Applications

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

Procurement Notes

Verify the H-grade automotive temperature rating (-40°C to 125°C) and the MX suffix indicating power-on reset to mid-scale in external reference mode. Confirm the TRPBF suffix denotes tape and reel packaging containing 2500 pieces. Ensure the 16-lead MSOP package matches the design footprint requirements.

Selection Notes

Select this part for applications requiring eight independent 12-bit channels with low noise and high accuracy. The H-grade variant requires a minimum supply voltage of 4.5V, unlike the L-grade which supports 2.7V. The MX reset option is suitable for designs needing a known mid-scale state upon startup when using external references.

Part Context

This component belongs to the LTC2637 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The IMS designation indicates the Industrial temperature grade (-40°C to 85°C), while the H suffix specifies the 4.096V full-scale range. The MS package type provides a compact 16-lead plastic surface-mount option.

Replacement Considerations

LTC2637IMS-HMI12#TRPBF: Identical electrical specifications but resets to mid-scale in internal reference mode instead of external reference mode.