If you are looking for a way to convert a digital stream of data into a perceptible analog signal, Linear Technology brings you their LTC2621CDD#PBF DAC converter as a solution. It has a voltage output. This device"s digital interface is serial (3-wire, spi, microwire). This DAC has a resolution of 12bit. This DAC has a temperature range of 0 °C to 70 °C. This device uses a single power supply.