"milliamps" - 1 õppematerjal

Book Analog Interfacing to Embedded Microprocessors

also has a -CLR pin that, when low, loads the DAC with all 0s. 154 Analog Interfacing to Embedded Microprocessors Figure 6.14 Multiple series LEDs. Solenoids, Relays, and Other Analog Outputs 155 Figure 6.15 Multiple multiplexed LEDs. The output of the AD7801 can swing from ground to the positive rail. The reference for the device can be either the positive supply or an external ref- erence voltage. The output can source or sink several milliamps. Like ADCs, DACs are available with both parallel and serial interfaces. The Analog Devices AD5300 is an 8-bit DAC with a rail-to-rail output and an SPI- compatible interface. Like the AD7801, the AD5300 can operate with supply voltages from 2.7 to 5.5 volts. Specialized DACs DACs designed for special applications are also available. The Analog Devices ADV7120 is a triple 8-bit video DAC designed for video use. The part contains 3 DACs for the RGB (red green blue) video signals