DatasheetsPDF.com

ATR0843

ATMEL
Part Number ATR0843
Manufacturer ATMEL
Description 4-channel Laser Driver
Published Jun 16, 2010
Detailed Description Features • • • • • • • • • • • • Current-controlled Output Current Source with 4 Input Channels LVDS/CMOS Compatible Inp...
Datasheet PDF File ATR0843 PDF File

ATR0843
ATR0843

Overview
Features • • • • • • • • • • • • Current-controlled Output Current Source with 4 Input Channels LVDS/CMOS Compatible Inputs Channel 2, 3, and 4 Separate Read-channel Enable (NER) Two Selectable Outputs for Grounded Laser Diodes Output Current per Channel up to 350 mA Total Output Current up to 500 mA On-chip RF Oscillator Control of 2 Different Swings and Frequencies by Use of 4 External Resistors Oscillator Frequency Range from 200 MHz to 500 MHz Maximum Oscillator Current Amplitude 100 mApp Single 5 V Power Supply Small Pb-free QFN24 Package (4 mm × 4 mm) www.
DataSheet4U.
com Applications • DVD Blue Laser • DVD-RAM/DVD-RW/DVD+RW with CD-RW Capability • Recordable Optical Drives 4-channel Laser Driver with 2 Outputs and 3 LVDS Inputs, NER Enable ATR0843 Summary Description The ATR0843 is a laser diode driver designed to operate two differently grounded laser diodes for DVD-RW/+RW (650 nm) and CD-RW (780 nm).
The device includes four channels for four different optical power levels.
The write channels (channel 2 to 4) can be controlled either by fast LVDS (Low Voltage Differential Signaling) or by single-ended standard CMOS logic.
In case of single-ended use, each of the ENABLE inputs (NEx or Ex) can be used, the complementary input may be left open.
There is no need for blocking or connection to a reference voltage.
The function of the read channel is to generate a continuous output current, channels 2 to 4 are designed as write channels with very fast switching speed.
All channels are summed together and routed to one of the two outputs, IOUTA or IOUTB, controlled by the select input SELA.
Each write channel (channels 2 to 4) can contribute up to 350 mA to the total output current of up to 500 mA.
The read channel can contribute up to 150 mA.
Total gain of 100 (read channel) and 250 (channel 2, 3 and 4), respectively, are provided between each reference current input and the selected output.
Although the reference inputs are current inputs, voltage control is p...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)