WM2624

The WM2624 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 10nA.

The device has been designed for glueless interface to industry standard microprocessors and DSPs. The WM2624 is programmed with a 16-bit serial word including 4 control bits and 8 data bits.

Excellent performance of the WM2624 is delivered with a maximum 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 on-chip voltage reference is available to external circuitry through the REF pin. It is buffered and can supply up to 1mA.Alternatively, an external reference can be used. A high impedance reference input buffer is included on the chip to interface to external references, whose source impedance may be high.

The WM2624 is available in an 8-pin SOIC package.Commercial (0° to 70°C) and Industrial (-40° to 85°C) temperature range variants are available.