LTC2637CDE-HMI8#TRPBF

Overview

The LTC2637CDE-HMI8#TRPBF is an octal 8-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 utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include a maximum integral nonlinearity (INL) error of ±0.5 LSB, rail-to-rail buffered outputs, and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels
• Integrated 4.096V precision reference with 10ppm/°C drift
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• I2C interface with selectable power-on reset to mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the C-grade designation aligns with the required 0°C to 70°C operating temperature range for the target application environment.

Selection Notes

Select this part when eight low-cost, moderate-precision voltage outputs are required in a compact footprint. The H-grade internal reference necessitates a minimum supply voltage of 4.5V. Ensure the I2C bus speed requirements do not exceed 400kHz and that the 4.096V full-scale range matches the downstream signal conditioning needs.

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' suffix denotes the 4.096V full-scale variant requiring higher supply voltages compared to the 'L' variant's 2.5V output. The 'C' grade specifies commercial temperature operation, distinguishing it from the wider industrial and automotive ranges.

Replacement Considerations

Direct pin-compatible substitutes within the same package include other LTC2637 variants with different resolutions or reset configurations, such as LTC2637CDE-LMI8#TRPBF or LTC2637CDE-HZ8#TRPBF, provided the supply voltage and reset behavior constraints are met.