DatasheetsPDF.com

ATR0842

ATMEL
Part Number ATR0842
Manufacturer ATMEL
Description 4-channel LVDS Laser Diode Driver
Published Jun 16, 2010
Detailed Description Features • • • • • • • • Current-controlled Output Current Source with 4 Input Channels Two Selectable Outputs for Groun...
Datasheet PDF File ATR0842 PDF File

ATR0842
ATR0842

Overview
Features • • • • • • • • Current-controlled Output Current Source with 4 Input Channels Two Selectable Outputs for Grounded Laser Diodes Output A Suited for Blue Laser Diodes: VLD ≤6 V (VCCH ≤8 V) LVDS/CMOS Compatible Inputs Channel 2, 3, and 4 Output Current per Channel up to 350 mA Total Output Current up to 500 mA On-chip RF Oscillator Control of 2 Different Frequencies and Swings by Use of 4 External Resistors • Oscillator Frequency Range from 200 MHz to 500 MHz • Maximum Oscillator Current Amplitude 100 mApp • Small Pb-free QFN24 4 mm × 4 mm Package www.
DataSheet4U.
com Applications • DVD Blue Laser • DVD-RAM/DVD-RW/DVD+RW with CD-RW Capability • Recordable Optical Drives 4-channel LVDS Laser Diode Driver with High Voltage Output for Blue Laser ATR0842 Summary Description The ATR0842 is a laser diode driver designed to operate two differently grounded laser diodes.
The output, IOUTA, can be used for a blue laser diode (400 nm) with up to 6 V voltage drop by applying 8 V at pin VCCH.
The other output, IOUTB, supports legacy laser diodes for DVD-RW/+RW/RAM (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 read function of the 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...


Similar Datasheet


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