WM2623

• 8-bit voltage output DAC
• Single supply from 2.7V to 5.5V
• Very low power consumption (3V supply):
   -    900W, slow mode
   -    2.1mW, fast mode
   -    3W, standby mode
• DNL ±0.2 LSB, INL ±0.5 LSB (max)
• Monotonic over Temperature
• DSP compatible serial interface
• Programmable settling time of 3s or 9s typical
• High impedance reference input buffer

• Digital Servo Control Loops
• Industrial Process Control
• Battery powered instruments and controls
• Machine and motion control devices
• Digital offset and gain adjustment

The WM2623 is an 8-bit voltage output, resistor string digital-toanalogue converter. It can operate with supply voltages between 2.7V and 5.5V and can be powered down under software control. Power down reduces current consumption to less than 1 A.

The WM2623 has been designed for glueless interface to industry standard microprocessors and DSPs, including the TMS320 family. The WM2623 is programmed with a 16-bit serial word including 4 control bits and 8 data bits.

Excellent performance of the WM2623 is delivered with a typical DNL of 0.2LSBs. Monotonicity is guaranteed over the operating temperature range. The settling time of the DAC is programmable to allow for optimisation of speed versus power dissipation. The output stage is buffered by a rail-to-rail amplifier with a gain of two, which features a Class AB output stage.

The reference voltage input features a high impedance buffer which eliminates the need to keep the reference source impedance low.

The WM2623 is available in an 8-pin SOIC package.Commercial (0° to 70°C) and Industrial (-40° to 85°C) temperature range variants are available.