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The LTC®1663 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 SMBus and 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.
LTC1663 Maximum Ratings
VCC to GND ........................................... 0.3V to 7.5V SDA, SCL .................................................0.3V to 7.5V AD0, AD1, AD2 (MSOP Only) ...... 0.3V to (VCC + 0.3V) VOUT ......................................... 0.3V to (VCC + 0.3V) Operating Temperature Range LTC1663C .............................................. 0°C to 70°C LTC1663I........................................... 40°C to 85°C Storage Temperature Range ......... 65°C to 150°C Lead Temperature (Soldering, 10 sec).............. 300°C
LTC1663 Features
Micropower 10-Bit DAC in SOT-23 Low Operating Current: 60mA Ultralow Power Shutdown Mode: 10mA 2-Wire Serial Interface Compatible with SMBus and I2CTM Single 2.7V to 5.5V Operation Selectable Internal Reference or Ratiometric to VCC Buffered True Rail-to-Rail Voltage Output Maximum DNL Error: 0.75LSB Power-On Reset 8 User Selectable Addresses (MSOP Package) 0.6V VIL and 1.4V VIH for SDA and SCL Small 5-Lead SOT-23 and 8-Lead MSOP Packages
LTC1663 Typical Application
Digital Calibration Offset/Gain Adjustment Industrial Process Control Automatic Test Equipment Arbitrary Function Generators Battery-Powered Data Conversion Products