The AD7542 is a precision 12-bit CMOS multiplying DAC designed for direct interface to 4- or 8-bit microprocessors.
The functional diagram shows the AD7542 to consist of three 4-bit data registers, a 12-bit DAC register, address decoding logic and a 12-bit CMOS multiplying DAC. Data is loaded into the data registers in three 4-bit bytes, and subsequently transferred to the 12-bit DAC register. All data loading or data transfer operations are identical to the WRITE cycle of a static RAM. A clear input allows the DAC register to be easily reset to all zeros when powering up the device.
### Features and Benefits
Resolution: 12 Bits
Nonlinearity: ±1/2 LSB Tmin to Tmax
Low Gain Drift: 2ppm/°C typ, 5ppm/°C max
Microprocessor Compatible
Full 4-Quadrant Multiplication
Fast Interface Timing
Low Power Dissipation: 40 mW max
Low Cost
Small Size: 16-pin DIP and 20-Terminal Surface Mount Package
