• 简体中文
• English

LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I²C Interface

The LTC1669 is a 10-bit voltage output DAC with true buffered rail-to-rail output voltage capability. It operates from a single supply with a range of 2.7V to 5.5V. The reference for the DAC is selectable between the supply voltage or an internal bandgap reference. Selecting the internal bandgap reference will set the full-scale output voltage range to 2.5V. Selecting the supply as the reference sets the output voltage range to the supply voltage.

The part features a simple 2-wire serial interface compatible with I²C that allows communication between many devices. The internal data registers are double buffered to allow for simultaneous update of several devices at once. The DAC can be put in low current power-down mode for use in power conscious systems.

Power-on reset ensures the DAC output is at 0V when power is initially applied, and all internal registers are cleared. The LTC1669 is pin-for-pin compatible with the LTC1663.

For SMBus-compatible designs, please refer to the LTC1663.

Features Micropower 10-Bit DAC in SOT-23 Low Operating Current: 60µA Ultralow Power Shutdown Mode: 12µA 2-Wire Serial Interface Compatible with I²C Selectable Internal Reference or Ratiometric to VCC Maximum DNL Error: 0.75LSB 8 User Selectable Addresses (MSOP Package) Single 2.7V to 5.5V Operation Buffered True Rail-to-Rail Voltage Output Power-On Reset 1.5V VIL and 2.1V VIH for SDA and SCL Small 5-Lead SOT-23 and 8-Lead MSOP Packages Typical Application

Applications Digital Calibration Offset/Gain Adjustment Industrial Process Control Automatic Test Equipment Arbitrary Function Generators Battery-Powered Data Conversion Products Packaging

Order Information