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Oki Semiconductor
KGL4208/KGL4209/KGL4210
10-Gbps GaAs Frequency Divider ICs
INTRODUCTION
Oki Semiconductor's KGL4208, KGL4209, and KGL4210 are 10-Gbps GaAs frequency divider ICs that
are designed for ultra high-speed digital communications systems. The KGL4208, KGL4209, and
KGL4210 are 1/4, 1/8, and 1/16 frequency dividers ICs respectively.
These 10-Gbps frequency divider IC's use 0.2-m gate length GaAs MESFET and Oki's unique CBFF
(Common gate Bias Flip Flop) technology to achieve operations of 10 GHz or more. The KGL4208,
KGL4209, and KGL4210 are available as 24-pin ceramic packaged devices. Due to their high sensitivity,
capacitive coupling is recommended for the devices' clock input terminal (CK) connections.
FEATURES
High-speed operation: 10-Gbps data rate (typ)
Low-power dissipation: 80 mW (typ.) using 2-V power-supply
0.2-m gate length GaAs MESFET process
CBFF (Common gate Bias Flip Flop) technology
24-pin ceramic package
APPLICATION
High-speed optical communication systems: 10 Gbps
High-speed test equipment
s
KGL4208/KGL4209/KGL4210
s
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Oki Semiconductor
BLOCK DIAGRAM
ELECTRICAL CHARACTERISTICS
Exceeding these maximum ratings could cause immediate damage or lead to permanent deterioration of the device.
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Units
Supply Voltage
V
DD
-0.3
2.3
V
Clock Input Voltage
V
CI
-0.3
1.5
V
Temperature at Package Base Under Bias
Ts
-45
100
C
Storage Temperature
Tst
-45
125
C
Electrical Characteristics
V
B
= 2 V 0.1 V, V
DD
= 2 V 0.1 V, Ts = 0C to 70C
Parameter
Symbol
Min.
Typ.
Max.
Units
Operating Data Bit Rate Range
DAR
10
Gbps
Power Dissipation
PW
0.08
0.1
W
High-Level Clock Input Voltage
V
IH
0.6
0.9
1.25
V
Low-Level Clock Input Voltage
V
IL
-0.1
0.1
0.3
V
High-Level Output Voltage
V
OH
0.5
0.7
0.9
V
Low-Level Output Voltage
V
OL
0
0.1
0.2
V
CR
CK
50
CK
Clock Input Terminal
CR
Reference Voltage Bias Terminal
Q
Divided Frequency Output Terminal
V
DD
Power Supply of Internal Circuit
Q
V
DD
C
Q
Q
D
V
DD
C
Q
Q
D
V
DD
CBFF
CBFF
Note: The number of KGL4208, 4209, and 4210 flip-flop stages are 2, 3, and 4, respectively.
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