LTC2636HMS-LMI8#PBF

Overview

The LTC2636HMS-LMI8#PBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 125°C temperature range. Communication occurs via a 3-wire SPI/MICROWIRE interface supporting clock rates up to 50MHz. Key electrical parameters include a settling time of 3.8µs at ±1LSB, a maximum integral nonlinearity error of ±0.5LSB, and a power-on reset to mid-scale in internal reference mode.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels in a 16-lead MSOP package
• Integrated 4.096V precision reference with ±10ppm/°C drift coefficient
• Rail-to-rail output buffers with ultralow crosstalk (<2.4nV•s)
• Hardware clear (CLR) and asynchronous DAC update (LDAC) pins

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel signal generation
• Portable battery-powered instrumentation
• Optical networking components

Procurement Notes

Verify the specific suffix #PBF indicates lead-free construction and RoHS compliance. Confirm the H-grade designation matches the required –40°C to 125°C operating temperature range for the application environment. Ensure the MSOP-16 package footprint aligns with the PCB layout specifications.

Selection Notes

Select this part when eight independent analog outputs are required within a compact surface-mount form factor. The H-grade variant is necessary for automotive or high-temperature industrial environments where the standard I-grade (-40°C to 85°C) is insufficient. Verify that the 4.5V minimum supply voltage is compatible with the system power rails.

Part Context

This component belongs to the LTC2636 family, which offers 12-, 10-, and 8-bit resolutions. The 'H' suffix denotes the automotive temperature grade with a 4.096V internal reference, while 'LMI8' specifies the mid-scale power-on reset behavior and 8-bit resolution. The 'MS' indicates the 16-lead MSOP package type.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2636HMX-LMI8#PBF (external reference mode) or LTC2636HMI-LMI8#PBF (DFN package). Cross-family alternatives like the LTC2634 series offer quad channels instead of octal.