LTC2637IMS-HMI12#PBF

Overview

The LTC2637IMS-HMI12#PBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference providing a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±2.5 LSB, rail-to-rail buffered outputs, and guaranteed monotonicity over the industrial temperature range of –40°C to 85°C. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Octal architecture with 12-bit resolution and 4.096V full-scale output
• Integrated 10ppm/°C precision reference with selectable internal or external options
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 85°C
• Ultralow DAC-to-DAC crosstalk (<3nV•s) and double-buffered data latches

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel precision
• Portable battery-powered instrumentation
• Automotive electronic control units

Procurement Notes

Verify the specific suffix HMI12 corresponds to the 12-bit resolution, 4.096V full-scale range, and mid-scale power-on reset configuration. Confirm the MS package designation matches the required 16-lead MSOP footprint for PCB layout compatibility. Ensure supply voltage constraints align with the 4.5V to 5.5V operational requirement for the H-grade variant.

Selection Notes

Select this component when eight independent 12-bit channels are required within a compact surface-mount package. The H-grade suffix indicates suitability for applications demanding a 4.096V output swing powered by a 4.5V to 5.5V rail. Consider the L-grade variant if a lower 2.7V to 5.5V supply range and 2.5V full-scale output are sufficient for the system design.

Part Context

This part belongs to the LTC2637 family of octal DACs, which also includes 10-bit and 8-bit variants. The IMS package denotes the 16-lead MSOP form factor, while the H suffix specifies the 4.096V internal reference configuration. The I suffix indicates the industrial temperature rating, distinguishing it from commercial or automotive grades within the same product line.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2637IMS-LMI12#PBF for lower voltage operation or LTC2637IMS-HMI10#PBF for reduced resolution requirements. Verify that any replacement maintains the 16-lead MSOP package and I2C interface compatibility.