LTC2637CDE-LZ10#PBF

Overview

The LTC2637CDE-LZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 14-lead DFN package and integrates a precision 2.5V reference with a 10ppm/°C temperature coefficient. The device operates on a single 2.7V to 5.5V supply and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 4.1µs at 3V, and a power-on reset function that defaults outputs to zero-scale in internal reference mode.

Feature Summary

• Octal architecture providing eight independent 10-bit DAC channels with rail-to-rail buffered outputs.
• Integrated high-accuracy 2.5V internal reference with a low drift rate of ±10ppm/°C.
• Power-on reset circuit configured to drive all outputs to zero-scale upon initialization.
• Ultralow crosstalk between DAC channels, specified at less than 3nV•s.

Applications

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

Procurement Notes

Verify the specific suffix 'LZ' confirms the zero-scale power-on reset behavior for internal reference applications. Confirm the 'C' grade designation aligns with the required commercial operating temperature range of 0°C to 70°C. Ensure the DFN package footprint matches the PCB layout constraints.

Selection Notes

Select this component when multiple low-cost, low-power voltage outputs are required within a compact area. The 10-bit resolution offers a balance between cost and accuracy. Verify that the system supply voltage falls within the 2.7V to 5.5V range compatible with the LTC2637-L series.

Part Context

This part belongs to the LTC2637 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'L' suffix indicates a 2.5V full-scale output capability, while the 'H' variant provides 4.096V. The 'DE' package code specifies the 14-lead plastic DFN form factor used for space-constrained designs.

Replacement Considerations

Direct substitutes within the same family include the LTC2637CDE-LZ12#PBF for higher resolution or the LTC2637CDE-LZ8#PBF for lower resolution. For external reference configurations, consider the LTC2637CDE-LMX10#PBF variant.