DESCRIPTION

The WM2604 is a quadruple 10-bit voltage output, resistor string, digital-to-analogue converter. Each DAC can be individually powered down under software control. A hardware controlled mode is provided that powers down all DACs. Power down reduces current consumption to 10nA.

The device has been designed to interface efficiently to industry standard microprocessors and DSPs, including the TMS320 family. The WM2604 is programmed with a 16-bit serial word comprising of a DAC address, individual DAC control bits and a 10-bit value.

FEATURES

• Four 10-bit voltage output DACs

• Dual 2.7V to 5.5V supply (separate digital and analogue supplies)

• DNL ±0.1 LSB, INL ±0.4 LSB

• Low power consumption:

- 5.5mW, slow mode - 5V supply

- 3.3mW, slow mode - 3V supply

• TMS320, (Q)SPIä, and Microwireä compatible serial interface

• Programmable settling time of 4ms or 12ms typical

APPLICATIONS

• Battery powered test instruments

• Digital offset and gain adjustment

• Battery operated/remote industrial controls

• Machine and motion control devices

• Wireless telephone and communication systems

• Speech synthesis

• Arbitrary waveform generation