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Micrel Semiconductor
Micrel Semiconductor

SY88802 Datasheet Preview

SY88802 Datasheet

LASER DIODE DRIVER

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SY88802 pdf
Micrel
5V 155Mbps LASER DIODE
DRIVER WITH OUTPUT ENABLE
SY88802
SY88802
FEATURES
s Up to 155Mbps operation
s Modulation current to 25mA
s PECL output enable
s Differential PECL inputs
s Single 5V power supply
s Available in a tiny 10-pin (3mm) MSOP
APPLICATIONS
s 155Mbps SONET
DESCRIPTION
The SY88802 is a high speed current switch for driving
a semiconductor laser diode in optical transmission
applications. The modulation current (IOUT) is controlled
by the current (IRSET) through the external resistor RSET.
The output OUT is HIGH and no current flows through
OUT when output enable is HIGH.
The device incorporates complementary open collector
outputs with 25mA maximum current driving capability.
The external resistor REXT must be placed between
/OUT and VCC to dissipate the worst case power. RSER
is recommended to compensate for laser diode matching
issues.
The SY88802 utilizes the high performance bipolar
ASSET™ technology.
FUNCTIONAL BLOCK DIAGRAM
www.DataSheet4U.com
VCC
REXT
/OUT
DIN
/DIN
/EN
Internal
Logic
IMOD
40X
VREF
RSET
VEE
RSET
OUT
RSER
to Laser Diode
VCC
GND
ASSET is a trademark of Micrel, Inc.
1
Rev.: A Amendment: /0
Issue Date: March 2003



Micrel Semiconductor
Micrel Semiconductor

SY88802 Datasheet Preview

SY88802 Datasheet

LASER DIODE DRIVER

No Preview Available !

SY88802 pdf
Micrel
PACKAGE/ORDERING INFORMATION
/EN 1
DIN 2
/DIN 3
VREF 4
RSET 5
10 VCC
9 OUT
8 /OUT
7 GND
6 GND
10-Pin MSOP
(K10-1)
SY88802
Ordering Information
Part Number
SY88802KC
SY88802KCTR*
SY88802KI
SY88802KITR*
*Tape and Reel
Package
Type
K10-1
K10-1
K10-1
K10-1
Operating
Range
Commercial
Commercial
Industrial
Industrial
Package
Marking
802
802
802
802
PIN DESCRIPTION
Pin Number
1
2, 3
4
5
6, 7
9, 8
10
Pin Name
/EN
DIN, /DIN
VREF
RSET
GND
OUT, /OUT
VCC
Pin Function
100k PECL compatible input w/ 75kpulldown resistor. Modulation current goes to zero
when deasserted high.
Differential 100k PECL compatible input w/ 75kpulldown resistors.
Voltage reference for use with RSET.
An external resistor connected from here to VREF sets the reference current for IOUT.
Device ground.
Differential open collector current outputs.
Positive power supply.
TRUTH TABLE(Note 1)
D /D /EN OUT(Note 2)
LHLH
HL L L
XXHH
Note 1. L = LOW, H = HIGH, X = don't care.
Note 2. H = IOUT = 0mA.
/OUT
L
H
L
2


Part Number SY88802
Description LASER DIODE DRIVER
Maker Micrel Semiconductor
Total Page 5 Pages
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