®
EL6836
Data Sheet
July 1, 2003
FN7351
PRELIMINARY
Dual 4-Channel Driver with Oscillator
The EL6836 is a high performance,
dual output, laser driver for writeable
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 WEN2B,
WEN3B, and WEN4B. The oscillator is enabled when OSEN
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.
WEN2B, WEN3B, and WEN4B are CMOS input pins with a
1.68V threshold. Output write current pulses are enabled
when a low is applied to the WEN2B, WEN3B, or 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
• 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
• Oscillator amplitude to 100mA
P-P
• Single +5V supply (±10%)
• Chip ENAs for power savings
Applications
• Super combo drives
• DVD drives
Pinout
EL6836
(32-PIN LPP)
TOP VIEW
32 RFREQ1
Ordering Information
PART
NUMBER
EL6836CL
TEMP. RANGE
0°C to +70°C
PACKAGE
32-Pin LPP
PKG. DWG. #
MDP0046
26 VDDQ
25 VDDN
24 IOUT1
23 IOUT1
22 GND
21 GND
20 VDDN
19 VDDN
18 IOUT2
17 IOUT2
GND 16
RFREQ2 1
GND 2
WENRB 3
Get FULL DATASHEET
NC 4
WEN2B 5
NC 6
WEN3B 7
NC 8
WEN4B 9
OSEN 10
SEL1 12
ENA 13
RAMP1 14
RAMP2 15
GND 11
THERMAL PAD
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
27 GND
28 IINR
31 IIN4
30 IIN3
29 IIN2
EL6836
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
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