LTC2637CDE-LZ12#TRPBF

Overview

The LTC2637CDE-LZ12#TRPBF 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 2.5V. The device operates on a single 2.7V to 5.5V supply and utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±2.5 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 eight independent 12-bit DAC channels in a compact 14-lead DFN package.
• Integrated high-accuracy 10ppm/°C reference yielding a 2.5V full-scale output.
• Rail-to-rail output buffers with ultralow crosstalk between DACs (<3nV•s).
• Power-on reset circuit configurable to zero-scale or mid-scale.

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 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 for applications requiring multiple low-power, high-precision voltage outputs controlled via I2C. Ensure the system supply voltage remains within the 2.7V to 5.5V range compatible with the LTC2637-L variant. Consider the 14-lead DFN package constraints for thermal management and PCB layout.

Part Context

This component belongs to the LTC2637 family, which includes 10-bit and 8-bit resolution variants as well as MSOP package options. The 'L' suffix denotes the 2.5V internal reference version, while 'Z' specifies the power-on reset behavior to zero-scale. The 'DE' code identifies the 14-lead plastic DFN physical footprint.

Replacement Considerations

Direct substitutes within the same family include LTC2637CDE-LZ10#TRPBF (10-bit) and LTC2637CDE-LZ8#TRPBF (8-bit), provided lower resolution is acceptable. Other packages such as the 16-lead MSOP (LTC2637CMS-LZ12#TRPBF) offer pin-compatible alternatives for different board space requirements.