LTC2637CMS-HZ12#PBF

Overview

The LTC2637CMS-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 full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. 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, rail-to-rail output buffers, and a power-on reset circuit configured to zero-scale in internal reference mode. The component is housed in a 16-lead MSOP package and is rated for the commercial temperature range of 0°C to 70°C.

Feature Summary

• Octal 12-bit resolution with maximum integral nonlinearity error of ±2.5 LSB
• Integrated 4.096V full-scale reference with 10ppm/°C drift
• Rail-to-rail output buffers guaranteed monotonic over temperature
• Ultralow DAC-to-DAC crosstalk (<3nV•s typical)

Applications

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

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's current documentation to ensure correct package type, temperature grade, and power-on reset configuration. Confirm that the commercial temperature grade (C) meets the operational requirements of the target environment, as this part is not rated for extended or automotive temperatures.

Selection Notes

Select this part when eight independent 12-bit voltage outputs are required with high accuracy and low crosstalk. Ensure the system supply voltage remains within the 4.5V to 5.5V range specified for the H-grade internal reference. Consider the external reference option if a different full-scale voltage is needed, though the internal reference provides high precision.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The 'H' designation indicates the 4.096V full-scale internal reference variant, while 'Z' specifies the power-on reset behavior to zero-scale. The 'MS' suffix denotes the 16-lead MSOP package format used in this specific part number.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-HZ12#PBF (same specs, tube packaging) or variants with different resolutions like LTC2637IMS-HZ10#PBF. For pin-compatible alternatives with different reset behaviors, consider LTC2637IMS-HMI12#PBF.