EL6216 Datasheet, PDF (1/2 Pages) Intersil Corporation – 3-Channel Laser Diode Driver + Oscillator

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Data Sheet
June 16, 2004
EL6216
FN7224
3-Channel Laser Diode Driver + Oscillator
The EL6216 is a high-performance
three channel laser driver that provides
controlled current to a grounded laser
diode. Write channels 2 and 3 should be used as the write
channels, with switching speeds of approximately one
nanosecond rise/fall time. All three channels are summed
together at the I_OUT output, allowing the user to create
multilevel waveforms in order to optimize laser diode
performance. The level of the output current is set by an
analog voltage applied to an external resistor which converts
the voltage into a current at the I_IN pin (virtually ground). The
current seen at this pin is then amplified to become a current
source at pin I_OUT.
An on-chip 500MHz oscillator is provided to allow output
current modulation when in any mode. This is turned on
when the OSCEN pin is held high. Complete control of
amplitude and frequency is set by two external resistors
connected to ground at pins R_FREQ and R_AMP (see graphs
in this data sheet for further explanation).
Ordering Information
PART
NUMBER
PACKAGE TAPE & REEL PKG. DWG. #
EL6216CU
24-Pin QSOP
-
MDP0040
EL6216CU-T7 24-Pin QSOP
7”
MDP0040
EL6216CU-T13 24-Pin QSOP
13”
MDP0040
Features
• Voltage-controlled output current source requiring one
external set resistor per channel
• Rise time = 0.8ns
• Fall time = 0.8ns
• On chip oscillator with frequency and amplitude control by
use of external resistors to ground
• Oscillator to 500MHz
• Oscillator to 100mA_PK/PK
• Single +5V supply (±10%)
• Disable feature for power-up protection and power savings
Applications
• CD-RW applications
• Writable optical drives
• Laser diode current switching
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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