LTC2642CDD-12#PBF

LTC2642-12 is a 12bit unbuffered voltage output DAC. This DAC operates from a single 2.7V to 5.5V supply and is guaranteed monotonic over temperature. LTC2642 features a reference input range of 2V to VDD. VOUT swings from 0V to VREF. For bipolar operation, the LTC2642 includes matched scaling resistors for use with an external precision op amp (such as the LT1678), generating a ±VREF output swing at RFB. It uses a simple SPI/MICROWIRE compatible 3-wire serial interface which can be operated at clock rates up to 50MHz and can interface directly with optocouplers for applications requiring isolation. A power-on reset circuit clears the LTC2642’s DAC output to mid scale. A logic low on the CLR pin asynchronously clears the DAC to mid scale. Applications includes high resolution offset and gain adjustment, process control and industrial automation, automatic test equipment and data acquisition systems.

• Differential nonlinearity of ±0.5LSB (max), integral nonlinearity of ±0.5LSB max at full temp
• Power supply rejection of ±0.5LSB max at full operating temperature range
• Typical gain error of ±0.5LSB at full operating temperature range
• Maximum 16bit INL error, ±1LSB over temperature
• 2.7V to 5.5V single supply operation, low 120µA supply current
• Unbuffered voltage output directly drives 60K loads
• 50MHz SPI/QSPI/MICROWIRE compatible serial interface
• Schmitt-trigger inputs for direct optocoupler interface
• Fast 1µs settling time to 16bit

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