1
GTD-18476 Rev. 3.0
Electronic Components
Preliminary
KGL4115GW
10.7 Gbps EA Modulator Driver IC
June 28, 2002
FEATURES
•
•
•
•
•
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10.7Gbps Operation
Differential Input
High Output Voltage: Maximum Amplitude > 2.7 Vpp
X-Point Control Function
Output Amplitude Control Function
Output Bias Control Function
FUNCTION DIAGRAM
INB
IN
OUT
VB1 VB2
VS
VC1 VC2
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
X-Point Control Voltage
Output Amplitude Control Voltage
Output Bias Control Voltage
Operating Temperature at Cu-W Base
Storage Temperature
Symbol
VS
VB1
VC1
VC2
Ts
Tst
Min
-6.5
VS-4.5
(Min. -6.5)
-6.5
-6.5
-10
-40
Max
0.3
VS+2.4
(Max. 0.3)
VS+1.2
(Max. 0.3)
VS+2.4
(Max. 0.3)
100
125
Unit
V
V
V
V
°C
°C
Note
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
X-Point Control Voltage
Output Amplitude Control Voltage
Output Bias Control Voltage
Operating Temperature at Cu-W Base
Input Interface
Output Interface
Symbol
VS
VB1
VC1
VC2
Ts
Min
-5.5
VS+0.8
VS
VS
0
DC coupled
Typ
Max
-5.0
VS+2.2
VS+1.0
VS+2.2
70
Unit
V
V
V
V
°C
AC coupled (External blocking capacitor is required)
1/4
GTD-18476 Rev. 3.0
1
Electronic Components
KGL4115GW
TYPICAL APPLICATION
Chip
Capacitor
≥
0.1µF
X-Point Control
VB1
KGL4115GW
GND
Inverted Data Input
Blocking
Capacitor
Ex. 0.1µF
Data Input
INB
OUT
IN
50Ω
EAM
Chip
Capacitor
≥
0.1µF
VB2
VS
VC1
VC2
Chip
Capacitor
≥
0.1µF
Supply Voltage
Output
Amplitude
Control
Output Bias
Control
APPLICATION NOTE
1. For stable operation;
1-1. To prevent a dependence of “X-Point” on the supply voltage VS,
(1) Use an external voltage source of –3.8V for “VB2”, or
(2) Control the voltage of “VB1”, so that the voltage difference “VB1– VB2” is constant.
1-2. To prevent a dependence of “Output amplitude” on the supply voltage VS,
Control the voltage of “VC1”, so that the voltage difference “VC1– VS” is constant.
1-3. To prevent a dependence of “Output bias control voltage” on supply voltage VS,
Control the voltage of “VC2”, so that the voltage difference “VC2– VS” is constant.
2. Power-up/shut-down sequence;
For power-up, supply control voltages (VB1, (VB2), VC1, VC2) at first, then Vs. For shut-down,
Vs at first, then control voltages.
Customer does not need to care about the sequence for the control voltages (VB1,(VB2),VC1,VC2).
3. Under “no signal input” condition, the operation may not be stable.
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GTD-18476 Rev. 3.0
1
Electronic Components
KGL4115GW
SAFETY AND HANDRING INFORMATION ON GaAs DEVICES
Arsenic Compound (GaAs Devices)
The product contains arsenic (As) as a compound.
This material is stable for normal use, however, its dust or vapor may be potentially hazardous to the human
body.
Avoid ingestion, fracture, burning or chemical treatment to the product.
• Do not put the product in your mouth.
• Do not burn or destroy the product.
• Do not perform chemical treatment for the product.
Keep laws and ordinances related to the disposal of the products.
NOTICE
1.
The information contained herein can change without notice owing to product and/or technical improvements.
Before using the product, please make sure that the information being referred to is up-to-date.
The outline of action and examples for application circuits described herein have been chosen as an
explanation for the standard action and performance of the product. When planning to use the product, please
ensure that the external conditions are reflected in the actual circuit, assembly, and program designs.
When designing your product, please use our product below the specified maximum ratings and within the
specified operating ranges including, but not limited to, operating voltage, power dissipation, and operating
temperature.
Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation
resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or
unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified
maximum ratings or operation outside the specified operating range.
Neither indemnity against nor license of a third party’s industrial and intellectual property right, etc. is
granted by us in connection with the use of the product and/or the information and drawings contained herein.
No responsibility is assumed by us for any infringement of a third party’s right which may result from the use
thereof.
The products listed in this document are intended for use in general electronics equipment for commercial
applications (e.g., office automation, communication equipment, measurement equipment, consumer
electronics, etc.). These products are not authorized for use in any system or application that requires special
or enhanced quality and reliability characteristics nor in any system or application where the failure of such
system or application may result in the loss or damage of property, or death or injury to humans.
Such applications include, but are not limited to, traffic and automotive equipment, safety devices, aerospace
equipment, nuclear power control, medical equipment, and life-support systems.
Certain products in this document may need government approval before they can be exported to particular
countries. The purchaser assumes the responsibility of determining the legality of export of these products
and will take appropriate and necessary steps at their own expense for these.
No part of the contents contained herein may be reprinted or reproduced without our prior permission.
Copyright 2002 Oki Electric Industry Co., Ltd.
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