LTC2637IMS-HZ12#PBF

Overview

The LTC2637IMS-HZ12#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 temperature coefficient of 10ppm/°C, 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 zero-scale in internal reference mode. The component is housed in a 16-lead MSOP package.

Feature Summary

• Octal architecture with eight independent 12-bit DAC channels
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 85°C
• Ultralow crosstalk between DACs (<3nV•s typical)

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the IMS designation corresponds to the 16-lead MSOP package type. Ensure the H-grade specification matches the required 4.5V to 5.5V supply range and 4.096V full-scale output for the target application environment.

Selection Notes

Select this part when eight isolated voltage outputs are required within a compact footprint. The H-grade variant is necessary for applications demanding a 4.096V full-scale range, whereas the L-grade provides 2.5V. The Z-power-on reset option ensures outputs start at zero-scale upon initialization, which is critical for safety or calibration-sensitive circuits requiring defined initial states.

Part Context

This component belongs to the LTC2637 family, which offers variations in resolution (8, 10, or 12 bits), package type (DFN or MSOP), and temperature grade (C, I, or H). The IMS-HZ12 configuration specifically combines the industrial temperature range, MSOP packaging, zero-scale reset behavior, and 12-bit resolution with the high-voltage internal reference.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific configuration are not available in the provided documentation.