The AD9661A is a highly integrated laser diode driver from Analog Devices featuring up to 120 mA output, 2 ns rise/fall times, and an onboard analog light…
The AD9661A laser diode driver is designed for printer and copier applications that require precise laser power control. It provides up to 120 mA of output current, a typical switching rate of 200 MHz, and a fast < 2 ns rise/fall time. Control signals are TTL/CMOS compatible and the device includes an onboard analog light‑power control loop that can be driven by a voltage input ranging from VREF to VREF + 1.6 V.
The datasheet lists detailed electrical specifications, absolute maximum ratings, pin descriptions, and layout guidelines. Key parameters include a 25 MHz analog control‑loop bandwidth, a +5 V supply requirement, and recommended external components for the feedback network. Proper PCB layout is emphasized to minimize inductance in the high‑speed output current path.
| Maximum Output Current | 120 mA |
|---|---|
| Switching Rate | 200 MHz |
The device can source up to 120 mA of laser diode current.
The maximum pulse rate is 200 MHz.