器件名称: T0800-PJQ
功能描述: 5-CHANNEL LASER DRIVER WITH RF OSCILLATOR AND 2 OUTPUTS
文件大小: 290.46KB 共14页
简 介:Features
Current-controlled Output Current Source with 5 Input Channels 2 Selectable Outputs for Grounded Laser Diodes Output Current per Channel up to 200 mA Total Output Current up to 250 mA Rise Time 1.0 ns/Fall Time 1.1 ns On-chip RF Oscillator Control of 2 Different Frequencies and Swings by Use of 4 External Resistors Oscillator Frequency Range from 200 MHz to 600 MHz Oscillator Swing to 100 mA Single 5-V Power Supply Common Enable/Disable Input TTL/CMOS Control Signals Small SSO24 Package and QFN28 Package
5-Channel Laser Driver with RF Oscillator and 2 Outputs T0800
Applications
Combo Drives (DVD + CD-RW) DVD-RAM with CD-RW Capability DVD-RW with CD-RW Capability
1. Description
The T0800 is a laser diode driver for the operation of two different, grounded laser diodes for DVD-RAM (650 nm) and CD-RW (780 nm). It includes five channels for five different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level. The channels 2 to 5 are provided as write channels with very fast switching speeds. When a low signal is applied to the NE pins, write current pulses are enabled. All channels are summed together and switched to one of the two outputs IOUTA or IOUTB by the select input SELA. Each channel can contribute up to 200 mA to the total output current of up to 250 mA. A total gain of 100 is provided between each reference current input and the selected output. Although the reference inputs are curr……
