LTC2627CDE#PBF

Overview

The LTC2627CDE#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. The device communicates via a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes an asynchronous DAC update pin (LDAC) and a power-on reset circuit that defaults outputs to zero scale upon initialization. The component is housed in a compact 12-lead, 3mm × 4mm plastic DFN package.

Feature Summary

• Dual-channel 12-bit resolution with guaranteed monotonicity over temperature
• I²C serial interface with 27 selectable addresses and global address support
• Power-on reset to zero scale for consistent system initialization
• Low power consumption: 260µA per DAC at 3V, down to 1µA max in power-down mode

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm lead-free finish status and packaging type. The '#PBF' designation indicates a lead-free product with a tube package configuration. Ensure compatibility with the required operating temperature range of 0°C to 70°C for the 'C' grade variant before procurement.

Selection Notes

Select this model when a dual-channel, 12-bit precision DAC is required in a minimal footprint. The CDE-1 variant offers mid-scale power-on reset, whereas the standard CDE version resets to zero scale. Consider the 400kHz I²C speed capability and ±15mA output drive strength for load regulation requirements. Verify that the external reference voltage aligns with the 2.7V to 5.5V supply range.

Part Context

This component belongs to the LTC2607/LTC2617/LTC2627 family of pin-compatible dual DACs. The family differentiates by resolution: 16-bit (LTC2607), 14-bit (LTC2617), and 12-bit (LTC2627). All variants share the same 12-lead DFN package and I²C interface architecture, allowing for design scalability across different precision requirements.

Replacement Considerations

The LTC2627CDE-1#PBF serves as a functional replacement where mid-scale power-on reset is required instead of zero scale. Other family members like the LTC2617 or LTC2607 provide higher resolutions but may require linearity verification for specific 12-bit applications.