®
EL6833
Data Sheet
July 15, 2004
FN7350.1
Dual 4-Channel Driver with Oscillator &
LVDS
The EL6833 is a high performance,
dual output, laser driver for writeable
‘super-combo’ CD - DVD drives. The
ENA pin enables the chip, while the SEL1 pin selects the
I
OUT
pin. Various waveforms can be generated where the
amplitude is determined by the currents flowing into I
INR
,
I
IN2
, I
IN3
, and I
IN4
. The timing is determined by the signals
at WEN2-WEN2B, WEN3-WEN3B, and WEN4-WEN4B. The
oscillator is enabled when OSEN-OSENB is high. The
amplified I
INR
current of the selected channel is enabled
when the ENA pin is high. The total output current is the sum
of the read current, the enabled write currents, and the
oscillator current when enabled.
Usually a voltage DAC will drive a resistor that is in series
with the I
INR
, I
IN2
, I
IN3
and I
IN4
input. The resistor allows the
user to optimize the current gain for each channel.
Output write current pulses are enabled when a high is
applied to the WEN2-WEN2B, WEN3-WEN3B, or WEN-
WEN4B pin. The write current will flow to the selected
output. When SEL1 is high I
OUT1
is selected. WENRB
enables read and oscillator current when low.
The R
F
oscillators frequency is determined by R
FREQ1
or
R
FREQ2
, and its amplitude by R
AMP1
or R
AMP2
.
Features
• Two channels for CD or DVD
• Voltage-controlled output current source requiring one
external set resistor per channel
• Rise time = 0.8ns
• Fall time = 0.8ns
• DVD - Channel 2 to 240mA max
• DVD - Channel 3 to 170mA max
• DVD - Channel 4 to 100mA max
• CD - Channel 2 to 350mA max
• CD - Channel 3 to 250mA max
• On chip oscillator with frequency and amplitude control by
use of external resistors to ground
• Oscillator frequency to 600MHz
• Oscillator amplitude to 100mA
P-P
• Single +5V supply (±10%)
• Chip ENAs for power savings
• External LVDS termination
• Pb-free available
Applications
• Super combo drives
Ordering Information
PART NUMBER
EL6833CL
EL6833CL-T7
EL6833CL-T13
EL6833CLZ
(Note)
EL6833CLZ-T7
(Note)
EL6833CLZ-T13
(Note)
PACKAGE
32-Pin QFN
32-Pin QFN
32-Pin QFN
32-Pin QFN
(Pb-Free)
32-Pin QFN
(Pb-Free)
32-Pin QFN
(Pb-Free)
TAPE &
REEL
-
7”
13”
-
7”
13”
PKG. DWG. #
MDP0046
MDP0046
MDP0046
MDP0046
MDP0046
MDP0046
NOTE: Intersil Lead-Free products employ special lead-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which is compatible with both SnPb
and lead-free soldering operations. Intersil Lead-Free products are
MSL classified at lead-free peak reflow temperatures that meet or
exceed the lead-free requirements of IPC/JEDEC J Std-020B.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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