The device has been designed for glueless interface to industry standard microprocessors and DSPs. It is programmed with a 16-bit serial word including 4 control bits and 8 data bits. Excellent performance 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 analogue output is buffered by a rail-to-rail amplifier with a gain of two and a Class AB output stage. The on-chip voltage reference is available to external through the REF pin. It is buffered and can supply up Alternatively, an external reference can be used. impedance reference input buffer eliminates the need the reference source impedance low.