SY88922VKCTR [MICREL]
5V/3.3V 2.5Gbps LASER DIODE DRIVER; 5V / 3.3V 2.5Gbps的激光二极管驱动器
| 型号： | SY88922VKCTR |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | 5V/3.3V 2.5Gbps LASER DIODE DRIVER |
| 文件： | 总5页 (文件大小：456K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SY88922V
5V/3.3V 2.5Gbps
LASER DIODE DRIVER
DESCRIPTION
FEATURES
■ Up to 2.5Gbps operation
The SY88922V is a high-speed current switch for
driving a semiconductor laser diode in optical transmission
■ 30mA modulation current
applications. The modulation current (I
by the current (I
The output OUT is HIGH when output enable is HIGH.
The device incorporates complementary open collector
outputs with a capability of driving peak current of 30mA.
) is controlled
.
OUT
) through the external resistor R
■ Separate modulation control
■ Separate output enable for laser safety
■ Differential inputs for data
RSET
SET
■ 75KΩ input pull-down resistor
■ 3.3V and 5V power supply options
■ Available in a tiny 10-pin (3mm × 3mm) MSOP
The resistor R
V
must be placed between /OUT and
is
EXT
to dissipate the worst case power. R
CC
SER
recommended to compensate for laser diode matching
issues. Pin 9 and pin 10 should be connected to achieve
better performance.
The SY88922V utilizes the high-performance bipolar
ASSET™ technology.
APPLICATIONS
All support documentation can be found on Micrel’s web
site at www.micrel.com.
■ 1.25Gbps and 2.5Gpbs Gigabit Ethernet
■ 531Mbps, 1062Mbps and 2.12Gbps Fibre Channel
■ 622Mbps SONET
■ Gigabit Interface Converter
■ 2.5Gbps SDH/SONET
■ 2.5Gbps Proprietary Links
BLOCK DIAGRAM
VCC
REXT
/OUT
OUT
RSER
DIN
Internal Logic
/DIN
to Laser Diode
IMOD
/EN
BIAS
Control
40X
VCC
GND
Modulation Control
GND
RSET
VREF
RSET
ASSET is a trademark of Micrel, Inc.
M9999-091906
hbwhelp@micrel.com or (408) 955-1690
Rev.: F
Amendment: /0
1
Issue Date: September2006
Micrel, Inc.
SY88922V
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
Package
Type
Operating
Range
Package
Marking
Lead
Finish
/EN
DIN
1
2
3
4
5
10 OUT
Part Number
9
8
7
6
OUT
/OUT
GND
VCC
SY88922VKC
SY88922VKCTR(2)
SY88922VKG
K10-1
K10-1
K10-1
Commercial
Commercial
Industrial
SY88922V
SY88922V
Sn-Pb
Sn-Pb
/DIN
VREF
RSET
SY88922V with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
SY88922VKGTR(2)
K10-1
Industrial
SY88922V with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
10-Pin MSOP (K10-1)
Notes:
1. Contact factory for die availability. Die is guaranteed at T = 25°C, DC electricals only.
A
2. Tape and Reel.
PIN DESCRIPTION
Pin Number
Pin Name
Pin Function
1
/EN
Enable. This PECL 100k compatible input enables Laser Driver. Modulation current goes
to zero when asserted HIGH.
2, 3
DIN, /DIN
VREF
Differential PECL 100k compatible inputs which receive NRZ data.
4
Voltage reference for use with RSET.
5
RSET
An external resistor sets up the source current for modulation IMOD.
6
7
VCC
Most positive power supply input.
Ground.
GND
8, 9, 10
/OUT, OUT
Open collector outputs from the modulation buffer drive these differential current outputs.
(1)
TRUTH TABLE
D
L
/D
H
L
/EN
L
OUT (2)
/OUT
H
L
L
H
L
H
X
L
X
H
H
Notes:
1. L = LOW, H = HIGH, X = don't care.
2. H = I = 0mA.
OUT
M9999-091906
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY88922V
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (V ) ..................................... +0V to +7.0V Supply Voltage (V ) .............................. +4.5V to +5.5V or
CC
Input Voltage (V ) .................................................0 to V
CC
............................................................ +3.0V to +3.6V
IN
Output Current (V
CC
) ............................................... 30mA
Ambient Temperature (T ) ......................... –40°C to +85°C
A
OUT
Power Dissipation (P ) ...........................................250mW
Capacitance on OUT + /OUT (C
Resistor to Dissipate Power (R
) ................2.5pF (typ.)
OUT
D
) .................... 10 to 50Ω
Lead Temperature (soldering, 20 sec.) ..................... 260°C
EXT
Laser Diode Serial Resistor (R
) ...................... 0 to 50Ω
Maximum Operating Junction Temperature (T )..... +125°C
SER
J
(4)
Storage Temperature (T ) ....................... –55°C to +125°C Resistor to Adjust Current (R
Package Thermal Resistance
)
...............700 to 20,000Ω
S
SET
(3)
MSOP (θ ) Still-air ...........................................113°C/W
JA
MSOP (Ψ ) ........................................................74°C/W
JB
DC ELECTRICAL CHARACTERISTICS
GND = 0V; VCC = +5.0V ±10% or VCC = +3.3V ±10%; TA = –40°C to +85°C; unless noted.
Symbol
VIH
Parameter
Condition
Min
VCC –1165
VCC –1810
1.7
Typ
Max
Units
Input HIGH Voltage (DIN, /DIN, /EN)
Input LOW Voltage (DIN, /DIN, /EN)
Reference Voltage
VCC –880
mV
VIL
VCC –1475 mV
VREF
IIL
2.0
2.3
V
Input LOW Current
(DIN, /DIN, /EN)(5)
0.5
µA
IIH
Input HIGH Current (DIN, /DIN, /EN)
Supply Current(6)
100
25
µA
mA
µA
mA
mA
—
ICC
IOL
Output LOW Current (/EN = HIGH)
Modulation Current
450
38
1000
30
IOUT
IRSET
ARSET
Modulation Control
0.125
30
0.625
44
=IOUT /IRSET
Notes:
1. Permanent device damage may occur if Absolute Maximum Ratings are exceeded. This is a stress rating only and functional operation is not implied
at conditions other than those detailed in the operational sections of this data sheet. Exposure to Absolute Maximum Ratings conditions for extended
periods may affect device reliability.
2. The voltage drop across R
3. Still-air without heatsink.
and R
plus Laser Diode should not be greater than 1V.
EXT
SER
4.
5.
6.
R
V
minimum 430Ω.
SET
= V (min).
IN
IL
I
= 25mA.
MOD
M9999-091906
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
SY88922V
(7)
AC ELECTRICAL CHARACTERISTICS
IMOD =10mA; GND = 0V; VCC = +5V ±10% or VCC = +3.3V ±10%; TA = –40°C to +85°C; unless noted.
Symbol
tpd
Parameter
Condition
Min
Typ
400
400
74
Max
Units
ps
D
Propagation Delay (DIN – OUT)
Propagation Delay (/EN – OUT)
tpd EN
tr, tf
ps
Rise/Fall Time(8)
(20% to 80%)
130
10
ps
IOR
DJ
Output Current Ringing(9)
Deterministic Jitter(10)
%
7
psrms
Notes:
7.
8.
9.
R
I
= R
= 25Ω ±1%; R
connects to V directly without Laser Diode.
SER CC
EXT
SER
= 10mA.
MOD
I
= 5 to 25mA.
OH
23
10. I
= 10mA, 2.5Gbps, 2 –1 pattern.
MOD
TYPICAL CHARACTERISTICS
I
vs. R
OUT
SET
40
30
20
10
0
VCC = 5.0V
VCC = 3.3V
0.0
1.0
2.0
3.0
(kΩ)
4.0
5.0
R
SET
M9999-091906
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY88922V
10-PIN MSOP (K10-1)
Rev. 00
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2005 Micrel, Incorporated.
M9999-091906
hbwhelp@micrel.com or (408) 955-1690
5
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