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PDF EL6835 Data sheet ( Hoja de datos )
| Número de pieza | EL6835 | |
| Descripción | Dual 4-Channel Driver with Oscillator | |
| Fabricantes | Intersil Corporation | |
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®
PRELIMINARY
Data Sheet
July 1, 2003
EL6835
www.DataSheet4U.com
FN7231
Dual 4-Channel Driver with Oscillator &
LVDS
The EL6835 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 WEN-
WEN4B 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.
Ordering Information
PART
NUMBER
EL6835CL
TEMP. RANGE
0°C to +70°C
PACKAGE
32-Pin LPP
PKG. DWG. #
MDP0046
Get FULL DATASHEET
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
• External 100Ω LVDS termination
• On chip oscillator with frequency and amplitude control by
use of external resistors to ground
• Oscillator frequency to 600MHz
• Oscillator amplitude to 100mAP-P
• Single +5V supply (±10%)
• Chip ENAs for power savings
Applications
• Super combo drives
Pinout
EL6835
(32-PIN LPP)
TOP VIEW
RFREQ2 1
GND 2
WENRB 3
WEN2 4
WEN2B 5
WEN3 6
WEN3B 7
WEN4 8
WEN4B 9
THERMAL
PAD
25 VDDN
24 IOUT1
23 IOUT1
22 GND
21 RAMP1
20 RAMP2
19 VDDN
18 IOUT2
17 IOUT2
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.
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| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet EL6835.PDF ] | |
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