INTERSIL EL6834CLZ

EL6834
®
Data Sheet
PRELIMINARY
Dual 4-Channel Driver with Oscillator &
LVDS
The EL6834 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
IOUT pin. Various waveforms can be generated where the
amplitude is determined by the currents flowing into IINR,
IIN2, IIN3, and IIN4. The timing is determined by the signals
at WEN2-WEN2B, WEN3-WEN3B, and WEN4-WEN4B. The
oscillator is enabled when OSEN is high. The amplified IINR
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 IINR, IIN2, IIN3, and IIN4 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 WENWEN4B pin. The write current will flow to the selected
output. When SEL1 is high IOUT1 is selected. WENRB
enables read and oscillator current when low.
The RF oscillators frequency is determined by RFREQ1 or
RFREQ2, and its amplitude by RAMP1 or RAMP2.
July 15, 2004
FN7238.1
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
• Channel 2 to 250mA max
• Channel 3 to 150mA max
• Channel 4 to 100mA max
• On chip oscillator with frequency and amplitude control by
use of external resistors to ground
• Oscillator frequency to 600MHz
• Internal 100Ω LVDS termination
• Oscillator amplitude to 100mAP-P
• Single +5V supply (±10%)
• Chip ENAs for power savings
• Pb-free available
Applications
• Super combo drives
Ordering Information
PART
NUMBER
PACKAGE
TAPE & REEL
PKG. DWG. #
EL6834CL
32-Pin QFN
-
MDP0046
EL6834CL-T7
32-Pin QFN
7”
MDP0046
EL6834CL-T13
32-Pin QFN
13”
MDP0046
EL6834CLZ
(See Note)
32-Pin QFN
(Pb-free)
-
MDP0046
EL6834CLZ-T7
(See Note)
32-Pin QFN
(Pb-free)
7”
MDP0046
EL6834CLZT13 (See Note)
32-Pin QFN
(Pb-free)
13”
MDP0046
Get FULL DATASHEET
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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EL6834
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