Atmel T0820
The T0820 is a laser diode driver for the operation of a grounded laser diode for writable optical drives. It includes four channels for four different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level whereas channels 2 to 4 are provided as write channels with very fast switching speeds.| Part No. | T0820 |
|---|---|
| Datasheet | T0820 Download |
| Manufacturer |  Atmel |
| Description | 4 CHANNEL LASER DRIVER |
| Buy | Stock & Price |
FEATURES
● Current-controlled Output Current Source with 4 Input Channels● Low-power Consumption
● Output Current up to 150 mA, Read Channel and Channel 2
● Output Current up to 200 mA, Channel 3 and Channel 4
● Total Output Current to 300 mA
● Rise Time 1.0 ns, Fall Time 1.1 ns
● On-chip RF Oscillator
● Control Frequency and Swings by Use of 2 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 SSO16 Package 4-Channel Laser Driver with RF Oscillator T0820 Application
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● DVD-RAM DVD-RW DVD+RW CD-RW Writable Optical Drives
DESCRIPTION
Write current pulses are enabled when a "low" signal is applied to the NE pins. All channels are summed together at the IOUT pin. Read channel and channel 2 can contribute up to 150 mA and channels 3 and 4 up to 200 mA to the total output current of up to 300 mA. A total gain of 100 is provided between each reference current input and the selected output.
