DACs work with optical modules
Housed in small 4×4-mm WLCSP and 6×6-mm LFCSP packages, the converters provide a range of unipolar or bipolar output voltages from a user-supplied 2.5 V reference. Outputs can be adjusted down to -20 V or as high as +14 V, and output buffers sink or source up to 20 mA. The DACs can impose low-frequency dithering on these outputs if needed, eliminating the need for external circuitry.
In addition to an integrated output multiplexer, both converters employ a four-wire serial interface that operates at clock rates of up to 50 MHz for write mode and is compatible with SPI, QSPI, Microwire, and DSP interface standards. The pin- and footprint-compatible AD5766 is functionally identical to the AD5767, but with 16-bit resolution.
Operating over a temperature range of -40°C to +105°C, the AD5767 and AD5766 cost $31.50 and $35 each in lots of 1000 units. The AD5767 is available now, while the AD5766 will be available in August 2017.
AD5767 product page
Analog Devices, www.analog.com
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