LTC2627IDE-1#PBF

Overview

The LTC2627IDE-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. The device utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key specifications include a settling time of 7µs, ultralow crosstalk of 30µV, and double-buffered data latches. The -1 suffix designates a power-on reset behavior that initializes outputs to mid-scale rather than zero scale.

Feature Summary

• Dual 12-bit resolution with guaranteed monotonicity over temperature
• I²C interface with 27 selectable addresses via CA0/CA1/CA2 pins
• Power-on reset to mid-scale for the IDE-1 variant
• Ultralow crosstalk (30µV) and high rail-to-rail output drive (±15mA min)

Applications

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

Procurement Notes

Verify the specific ordering suffix '-1' confirms the mid-scale power-on reset characteristic required by the application design. Confirm the 'IDE' designation matches the -40°C to +85°C industrial temperature range and DFN package requirements. Cross-reference the manufacturer part number with official distributor catalogs to ensure component authenticity and current availability status.

Selection Notes

Select this component when a compact dual-channel DAC with I²C connectivity is needed. The 12-bit resolution suits applications requiring moderate precision. Ensure the system can accommodate the mid-scale power-on state if using the -1 variant. Verify that the 2.7V to 5.5V supply range aligns with the target board's power architecture and that the 400kHz I²C speed meets bus timing constraints.

Part Context

This part belongs to the LTC2607/LTC2617/LTC2627 family of dual rail-to-rail DACs. The LTC2627 specifically offers 12-bit resolution, distinguishing it from the 14-bit LTC2617 and 16-bit LTC2607. All members share the same 12-lead DFN package and pinout, allowing for pin-compatible design flexibility across different resolution requirements within the same product line.

Replacement Considerations

LTC2627CDE-1#PBF: Same electrical performance and mid-scale reset, but rated for commercial temperature range (0°C to 70°C).

FAQ

What is the default output state upon power-up for the LTC2627IDE-1?

The LTC2627IDE-1 variant incorporates a power-on reset circuit that sets the voltage outputs to mid-scale until a valid write and update command is executed.

How many selectable I²C slave addresses does the device support?

The device supports 27 selectable addresses determined by the logic states (High, Low, or Floating) of the CA0, CA1, and CA2 pins.

What is the maximum I²C clock frequency supported?

The device operates in both standard mode (100kHz) and fast mode (400kHz).