1Electronic Components
November 10, 2000
GTD-18161 Rev. 5.0
KGA4115
10 Gbps EA Modulator Driver IC
1/4
FEATURES
High Output Voltage: Maximum Amplitude > 2.7 Vpp
X-Point Control Function
Output Amplitude Control Function
Output Bias Control Function
FUNCTION DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Max
Unit
Note
Supply Voltage
VS
-6.5
0.3
V
X-Point Control Voltage
VB1
VS-4.8
(Min. -6.5)
VS+2.4
(Max. 0.3)
V
Output Amplitude Control Voltage
VC1
-6.5
VS+1.2
(Max. 0.3)
V
Output Bias Control Voltage
VC2
-6.5
VS+2.4
(Max. 0.3)
V
Operating Temperature at the Back
Side of the Chip
Ts
-10
100
C
Storage Temperature
Tst
-40
125
C
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage
VS
-5.5
-5.0
V
X-Point Control Voltage
VB1
VS+0.8
VS+2.2
V
Output Amplitude Control Voltage
VC1
VS
VS+1.0
V
Output Bias Control Voltage
VC2
VS
VS+2.2
V
Operating Temperature at the Back
Side of the Chip
Ts
0
75
C
Input Interface
AC coupled (External blocking capacitor is required)
Output Interface
DC coupled
OUT
IN
VB1 VB2
VS
VC1 VC2
IN
OUT
Vg
GTD-18161 Rev. 5.0
1Electronic Components
KGA4115
3/4
TYPICAL CHARACTERISTICS
V: 500 mV/div, H: 20 ps/div
PAD ARRANGEMENT
(Top View)
Unit :
m
IN
: Signal Input Port
IN
: Signal Input-bar Port
OUT : Signal Output Port
OUT : Signal Output-bar Port
VB1 : Input-bar Termination Port
VB2 : Input Termination Port
and Cross Point Control Port
(External capacitor is required)
(External capacitor is required)
VC1 : Output Amplitude Control Port
VC2 : Output Bias Current Control Port
VS
: Supply Voltage Port
Vg
: Output-bar Internal Termination Port
( If you don't use output-bar, please connect Vg to GND, but if you use output-bar, Vg is opened. )
Input Signal:
10 Gb/s, PN31, PRBS, 0.5 Vpp
(through a Bessel Filter of fc = 7.5 GHz)
Output Amplitude
: 2.8 Vpp
Rise Time (2080%) : 28.9 ps
Fall Time (2080%) : 28.9 ps
100
100
225
250
150
50
225
100
100
150
150
250
150
50
50
50
50
50
50
100
100
375
400
100
100
400
575
50
50
50
2300
100
100
200
100
100
100
200
100
100
100
200
100
100
1600
IN
IN
GND
GND
GND
GND
GND
GND
GND
OUT
OUT
Vg
VB1
VB2
VS
VS
VC1
VC2
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