ISL58115
Laser Diode Driver with APC Amplifier for Printers
Typical Diagram
Key Features
- Voltage-controlled Output Current Source
- Very Few External Components Needed
- Internal LVDS Termination Resistors
- 300MHz Switching
- Up to 110mA Output Current
- Rise Time < 500ps
- Fall Time < 500ps
- APC Loop for Write Power Control
- Fast Settling APC Amplifier
- Single +5V Supply (±10%)
- Disable Feature for Power-Up Protection and Conserving Power
- Zero Droop
- Pb-Free (RoHS compliant)
Description
The ISL58115 is a high-performance laser driver that provides controlled current to grounded laser diodes. A bias current is summed with the switched current at the IOUT output, allowing the user to optimize laser diode performance.
Output switched current flows when the LVDS signal DATA is high. The output current returns to the fixed-threshold value when DATA is low. Complete IOUT shut-off is achieved by holding the CHPEN low, which will override all other control pins.
A fast settling APC amplifier connects directly to the monitor diode. The ISL58115 does not exhibit any time-dependent droop since the calibration gain is stored as a digital number.
Applications
- Laser Printer Applications
- Laser Diode Current Switching
