WM5620L and WM5620 are quad 8-bit digital to analogue converters (DAC) controlled via a serial interface. Each DAC's output voltage range is programmable for either x1 or x2 its reference input voltage, allowing near rail to rail operation for the x2 output range. Separate high impedance buffered voltage reference inputs are provided for each DAC. WM5620L operates on a single supply voltage of 3 V while WM5620 operates on 5 V. WM5620/L interfaces to all popular microcontrollers and microprocessors via a three wire serial interface with CMOS compatible, schmitt trigger, digital inputs. An 11 bit command word comprises 2 DAC select bits, an output range selection bit and 8-bits of data. Individual or all DAC outputs are changed using WM5620/L's double buffered DAC registers and the separate LOAD and LDAC inputs. DAC outputs are updated simultaneously by writing a complete set of new values and then pulsing the LDAC input. The DAC outputs are optimised for single supply operation and driving ground referenced loads. An internal power-on-reset function sets the DAC's input codes to zero at power up. Ideal in space critical applications WM5620/L is available in small outline and DIP packages for commercial (0oC to 70oC) and industrial (-40oC to 85oC) temperature ranges.
The WM5620L and WM5620 are quad 8-bit digital to analogue converters (DAC) controlled via a three-wire serial interface. Each DAC's output voltage range is programmable for either x1 or x2 its reference input voltage, allowing near rail-to-rail operation for the x2 output range.
The devices feature separate high-impedance buffered voltage reference inputs and operate on single supply voltages of 3V (WM5620L) or 5V (WM5620). They are available in small outline and DIP packages for commercial and industrial temperature ranges, making them ideal for space-critical applications such as mobile communications and automatic test equipment.
| Resolution | 8 Bits |
|---|---|
| Supply Voltage (WM5620) | 4.75 V to 5.25 V |
| Supply Voltage (WM5620L) | 2.7 V to 3.3 V |
| Clock Frequency | 1 MHz |
| Output Sink Current | 2 mA |
| Package Type | 14 pin plastic DIP or SO |
The maximum supply voltage for the WM5620 is 5.25 V.