Maxim Integrated MAX5112GTJ

Description
The MAX5112 is a 14-bit, 9-channel, current-output digital-to-analog converter (DAC) that operates from a low 3.0V power supply. It provides 14-bit performance without any adjustment. The device's output ranges are optimized to bias a high-power tunable laser source. Each of the 9 channels provides a current source, with channels 1 and 2 providing 10mA current. An internal multiplexer switches the outputs of each channel to one of four external nodes. Channel 3 provides a selectable current of 2mA or 20mA, while channel 4 provides 90mA and channel 5 provides 180mA. Channel 6 provides a selectable current of 60mA or 300mA, and channel 7 provides 90mA. Channels 8 and 9 provide a selectable current of 15mA or 35mA. Connecting DAC outputs in parallel allows for additional current or higher resolution. The device contains an internal reference and is driven by an I²C-compatible interface with clock rates of up to 400kHz. An active-high asynchronous CLR input resets DAC codes to zero independent of the serial interface. The device provides a separate power-supply input for driving the interface logic.

Features
Low 3.0V supply
Integrated multiplexers for outputs 1 and 2
Increased current or resolution with outputs connected in parallel
I²C-compatible serial interface
Internal reference
Overtemperature protection
-40°C to 105°C temperature range
Available in 36-Bump WLP or 32-Pin TQFN packages

Applications
Tunable laser diode biasing