LTC2637HDE-LMI10#PBF

Overview

The LTC2637HDE-LMI10#PBF is an octal, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal 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 is handled via 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 ±1 LSB, a settling time of 4.3µs at ±1LSB, and ultralow DAC-to-DAC crosstalk below 3nV•s.

Feature Summary

• Octal architecture with 10-bit resolution and 4.096V full-scale output
• Integrated precision reference with 10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 125°C
• Ultralow crosstalk between DAC channels (<3nV•s)

Applications

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

Procurement Notes

Verify that the H-grade suffix confirms the automotive temperature rating of –40°C to 125°C and the DE package designation matches the required 14-lead DFN form factor. Confirm the LMI10 suffix indicates the mid-scale power-on reset behavior for internal reference mode. Ensure the #PBF suffix denotes lead-free compliance before finalizing procurement orders.

Selection Notes

Select this part when eight independent analog outputs are required in a compact footprint. The H-grade variant is necessary for applications requiring operation up to 125°C or utilizing the 4.096V internal reference range. The MSOP package offers an alternative if the 16-lead configuration is preferred over the 14-lead DFN. Verify I2C address pin configurations (CA0, CA1, CA2) match system bus requirements.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also includes 8-bit and 12-bit variants. The 'H' grade distinguishes it by its extended temperature range and specific 4.096V full-scale capability compared to the 'L' grade's 2.5V output. The 'DE' suffix identifies the 14-lead plastic DFN package, while 'MS' would indicate the 16-lead MSOP option.

Replacement Considerations

Direct substitutes within the same family include the LTC2637HDE-LMI12#PBF (12-bit) and LTC2637HDE-LMI8#PBF (8-bit). For different package options, the LTC2637HMS-LMI10#PBF provides identical electrical performance in a 16-lead MSOP housing.