sy88902 Micrel Semiconductor, sy88902 Datasheet

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sy88902

Manufacturer Part Number
sy88902
Description
Sy88902 Laser Diode Driver With Output Enable
Manufacturer
Micrel Semiconductor
Datasheet
FEATURES
PIN CONFIGURATIONS
BLOCK DIAGRAM
Up to 1.25Gbps operation
25mA peak drive current
Separate modulation control
Separate output enable for laser safety
Differential inputs for data
75K input pulldown resistor
Single power supply
Designed for use with SY88903 and SY88904
Available in a tiny 10-pin (3mm) MSOP
R
V
/D
/EN
REF
D
SET
IN
IN
1
2
3
4
5
D
D
EN
IN
IN
MSOP
K10-1
10 V
9
8
7
6
Internal Logic
V
OUT
/OUT
GND
GND
REF
CC
Control
BIAS
Modulation Control
LASER DIODE
DRIVER WTIH
OUTPUT ENABLE
R
SET
1
40X
a semiconductor laser diode in optical transmission
applications. The output current, or modulation current
I
the resistor R
enable is HIGH.
outputs with a capability of driving peak current of 25mA.
The resistor R
V
recommended to compensate for laser diode matching
issues.
ASSET™ technology.
MOD
CC
DESCRIPTION
APPLICATIONS
The SY88902 is a high speed current switch for driving
The device incorporates complementary open collector
The SY88902 utilizes the high performance bipolar
1.25Gbps Gigabit Ethernet
531Mbps and 1062Mbps Fibre Channel
622Mbps SONET
Gigabit Interface Converter
R
, is DC current controlled by I
V
SET
V
R
OUT
to dissipate the worst case power. R
EE
CC
EXT
I
MOD
SET
EXT
. The output OUT is HIGH when output
must be placed between /OUT and
OUT
to Laser Diode
GND
V
CC
R
SER
RSET
Rev.: C
Issue Date: July 2000
, current through
SY88902
FINAL
Amendment: /1
SER
is

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sy88902 Summary of contents

Page 1

... LASER DIODE DRIVER WTIH OUTPUT ENABLE DESCRIPTION The SY88902 is a high speed current switch for driving a semiconductor laser diode in optical transmission applications. The output current, or modulation current current controlled by I MOD the resistor R enable is HIGH. The device incorporates complementary open collector outputs with a capability of driving peak current of 25mA ...

Page 2

... Laser Diode should not be greater than 2V. 2 (1) D /EN OUT OmA Value +85 –55 to +125 250 Value +4 1500 to 50,000 206 2.5 typical SY88902 (2) /OUT Unit Unit V C/W pf ...

Page 3

... Min. Typ. Max. Unit — — 1000 ps — — 1000 ps — — 200 — — — SY88902 Max. Unit V -880 -1475 mV CC — V — uA 100 500 0.625 mA 44 — Conditions I = 10mA MOD ...

Page 4

... Micrel APPLICATION EXAMPLE FOR 3-CHIP SET SOLUTION 4 SY88902 ...

Page 5

... Micrel APPLICATION EXAMPLE FOR 3-CHIP SET SOLUTION 5 SY88902 ...

Page 6

... Micrel PERFORMANCE CURVES 0.0 0.0 PRODUCT ORDERING CODE Ordering Package Code Type SY88902KC K10-1 SY88902KCTR K10-1 I and R O SET 4.0K 8.0K 2.0K 6.0K (ohm) R SET Operating Range Commercial Commercial 6 SY88902 10K 12K ...

Page 7

... Micrel 10 LEAD MSOP (K10-1) 7 SY88902 Rev. 00 ...

Page 8

... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc (408) 914-7878 http://www.micrel.com FAX WEB © 2000 Micrel Incorporated 8 SY88902 ...

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