MAX5544

19-1571; Rev 0; 12/99 Low-Cost, +5V, Serial-Input, Voltage-Output, 14-Bit DAC General Description The MAX5544 serial-input, voltage-output, 14-bit monotonic digital-to-analog converter (DAC) operates from a single +5V supply. The DAC output is unbuffered, resulting in low 0.3mA supply current and low 1LSB offset error. The DAC output range is 0V to VREF. The DAC latch accepts a 16-bit serial word. A power-on reset circuit clears the DAC output to 0V (unipolar mode) when power is initially applied. The 10MHz 3-wire serial interface is SPI™/QSPI™/ MICROWIRE™ compatible and interfaces directly with optocouplers for applications requiring isolation. The MAX5544 is available in an 8-pin SO package. o +5V Single-Supply Operation o Low Power: 1.5mW o 1µs Settling Time o Unbuffered Voltage Output Directly Drives 60kΩ Loads o SPI/QSPI/MICROWIRE-Compatible Serial Interface o Power-On Reset Circuit Clears DAC Output to 0V (unipolar mode) o Schmitt Trigger Inputs for Direct Optocoupler Interface Features o Full 14-Bit Performance Without Adjustments MAX5544 Applications High-Resolution Offset and Gain Adjustment Industrial Process Control Automated Test Equipment Data Acquisition Systems PART MAX5544CSA MAX5544ESA Ordering Information TEMP. RANGE 0°C to +70°C -40°C to +85°C PIN-PACKAGE 8 SO 8 SO Pin Configuration TOP VIEW Functional Diagram VDD MAX5544 REF OUT 1 AGND 2 REF 3 CS 4 8 VDD 14-BIT DAC OUT AGND CS DIN SCLK 16-BIT DATA LATCH CONTROL LOGIC SERIAL INPUT REGISTER MAX5544...