DAC for optical networking, automation and telecom applications

Mouser now stocks the AD5767 12-bit voltage output 'denseDAC' DAC from Analog Devices. Created to reduce the system footprint for wired telecommunications systems without compromising performance, the 16-channel DAC gives the required discrete components, and necessary bias ranges for coherent, fibre-based optical systems from medium to long-haul implementations. The DAC provides a wide range of unipolar or bipolar output voltages from the user-supplied 2.5V reference. Engineers can monitor each of the device’s 16 channels using the integrated output voltage multiplexer, and alter each output from a minimum output voltage of -20V to a maximum output voltage of +14V. The output buffers on the DAC can also sink or source up to 20mA, and, if needed, the DAC can execute low-frequency dithering functionality, which removes the need for external circuitry. This reduction of external components makes the DAC highly desirable for indium phosphide Mach-Zehnder modulator (InP MZM) biasing applications. For communications, the device features a versatile four-wire serial interface that operates at a clock rate of up to 50MHz for write mode and is compatible with a serial peripheral interface (SPI), QSPI, MICROWIRE, and DSP interface standards. The DAC comes in a space-saving 4mm x 4mm WLCSP package and 6mm x 6mm LFCSP package. The DAC highlights a wide operating temperature range of minus 40C to 105C and is suited for industrial automation, optical networking, analog output modules, test and measurement equipment, and data acquisition applications.