LTC2637CDE-HZ12#TRPBF

Overview

The LTC2637CDE-HZ12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a high-accuracy internal reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates rail-to-rail output buffers guaranteed monotonic over the commercial temperature range of 0°C to 70°C. The part includes a power-on reset circuit configured to reset all channels to zero-scale upon initialization.

Feature Summary

• Octal architecture with 12-bit resolution and integrated 10ppm/°C precision reference
• Rail-to-rail buffered outputs with maximum INL error of ±2.5LSB
• I2C serial interface with selectable slave addresses via CA0 pin
• Power-on reset function defaults outputs to zero-scale in internal reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify that the ordering suffix #TRPBF confirms tape and reel packaging containing 2500 pieces. Confirm the DE package designation corresponds to the 14-lead DFN form factor. Ensure the C grade matches the required 0°C to 70°C operating temperature range for the specific application environment.

Selection Notes

Select this part when eight independent 12-bit voltage outputs are required within a compact footprint. The H-grade internal reference necessitates a minimum supply voltage of 4.5V, distinguishing it from the L-grade variant which supports 2.7V operation. Verify that the I2C bus speed requirements align with the device's support for standard and fast modes up to 400kHz.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The CDE-HZ12 configuration specifically denotes the commercial temperature grade, 14-lead DFN package, zero-scale power-on reset behavior, and 12-bit resolution with the 4.096V full-scale internal reference.

Replacement Considerations

Direct functional equivalents within the same family include the LTC2637CDE-LZ12#TRPBF for lower voltage applications or the LTC2637IDE-HZ12#TRPBF for extended industrial temperature ranges. Package variations such as the MSOP format are available as LTC2637IMS-HZ12#TRPBF.