LTC2627CDE-1#PBF

Overview

The LTC2627CDE-1#PBF is a dual 12-bit, rail-to-rail voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single supply voltage ranging from 2.7V to 5.5V and features built-in high-performance output buffers capable of sourcing or sinking at least 15mA. The device utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. A key characteristic of the '-1' suffix variant is its power-on reset behavior, which initializes both DAC outputs to mid-scale upon power-up until a valid write and update command is executed.

Feature Summary

• Dual 12-bit resolution with guaranteed monotonicity over temperature
• I²C interface with 27 selectable addresses via CA0, CA1, and CA2 pins
• Power-on reset to mid-scale for safe system initialization
• Low power consumption: 260µA per DAC at 3V; 1µA max in power-down mode

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors as counterfeit risks exist for legacy parts. Confirm the 'C' grade indicates an operating temperature range of 0°C to 70°C. Ensure the '#PBF' suffix denotes lead-free finish and tube packaging. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this model when mid-scale initialization is required during power-up to prevent downstream circuit activation. Compare against the non-suffixed LTC2627 if zero-scale initialization is preferred. Consider the LTC2617 or LTC2607 if higher resolution (14-bit or 16-bit) is necessary, noting that pinout remains compatible. Verify I²C bus capacitance limits if operating in fast mode.

Part Context

This component belongs to the LTC2607/LTC2617/LTC2627 family of dual DACs sharing a common 12-lead DFN package. The '-1' designation specifically differentiates the power-on reset state from the standard version. It serves as the 12-bit resolution option within this series, offering a balance between performance and power consumption compared to the 14-bit and 16-bit variants.

Replacement Considerations

The non-suffixed LTC2627CDE-1#PBF is functionally identical except for the power-on reset state (zero scale vs. mid-scale). No other direct substitutes are documented in the provided source material.