MAX5442AEUB+

The MAX5442AEUB+ is a serial input, voltage output, 16bit digital to analogue converter (DAC) in 10 pin µMAX package. It operates from low +5V single supply. Unbuffered DAC output result in a low supply current of 120μA and low offset error of 2LSB. The DAC output ranges from 0 to VREF and a 16bit serial word is used to load data into DAC latch. The 25MHz, 3-wire serial interface is compatible with SPI/QSPI/MICROWIRE and can interface directly with optocouplers for applications requiring isolation. A power-on reset circuit clears DAC output to code 32768 when power is initially applied and logic low on complementary CLR asynchronously clears DAC output to code 32768 independent of serial interface. For bipolar operation, matched scaling resistors are provided in MAX5442 for use with an external precision op amp (such as MAX400) which generates ±VREF output swing. The MAX5442A is used in high resolution offset and gain adjustment, automated test equipment and data acquisition systems.

• Supply voltage range from 4.5V to 5.5V
• Operating temperature range from -40°C to 85°C
• Fast settling time of 1μs
• VREF range extends to VDD
• Reference -3dB bandwidth of 1MHz
• Voltage output slew rate of 15V/μs
• Power supply rejection (PSR) of ±1LSB at 4.5V ≤ VDD ≤ 5.5V
• Unbuffered voltage output directly drives 60Kohm loads
• Schmitt trigger inputs for direct optocoupler interface
• 16bit performance (±2LSB INL and ±1LSB DNL) over temperature without any adjustments

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