1
Electronic Components
ODHKGL4136HD-04
February 18, 2004
KGL4136HD
10.7 Gbps Differential Mach-Zehnder Modulator Driver IC
FEATURES
•
•
•
Differential Output Voltage: Maximum Amplitude > 7.4 Vpp ( 3.7Vpp Each)
X-Point Control Function
Output Amplitude Control Function
APPLICATIONS
SONET OC-192 Transmission Systems up to 10.7 Gbps
DWDM Systems
Long Haul and Ultra Long Haul Transmission Systems
Optical Transmitters/Transceivers/Transponders
GENERAL DESCRIPTIONS
The KGL4136HD is a high performance Mach Zehnder Modulator driver for SONET/SDH up to
10.7Gb/s. The device provides a Differential output amplitude > 7.4Vpp ( single ended >3.7Vpp
each ), output amplitude control, and duty cycle (X-Point) control.
The KGL4136HD data input accepts single ended or differential AC-coupled signals.
External
Capacitors for AC Termination and Blocking Capacitors are Required.
External
BiasTees are Required to provide output DC Bias (VD). The device provides a minimum of
Differential 7.4Vpp output amplitude AC coupled to a 50-ohm load. The output amplitude can be
tuned by varying VC1.
The KGL4136HD is capable of adjusting the crossing point (X-point) from 40% to 60% of the
output eye diagram via the differential voltage between VB1 and VB2.
The KGL4136HD is packaged in a high performance 32-pin 7mm QFP package.
KGL4136HD BLOCK DIAGRAM
INB
OUTB
IN
OUT
VB1 VB2
VS
VC1
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ODHKGL4136HD-04
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Electronic Components
KGL4136HD
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
X-Point Control Voltage
X-Point Reference Voltage
Output Amplitude Control Voltage
DC Bias for Output Stage Amplifier
Operating Temperature at Package Base
Storage Temperature
Symbol
VS
VB1
VB2
VC1
VD
Ts
Tst
Min
-6.5
VS-4.5
(Min. -6.5)
VS-4.5
(Min. -6.5)
-6.5
VS/2
-10
-40
Max
0.3
VS+2.4
(Max. 0.3)
VS+2.4
(Max. 0.3)
VS+1.2
(Max. 0.3)
0.3
100
125
Unit
V
V
V
V
V
°C
°C
Note
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Supply Voltage
*1
X-Point Control Voltage
X-Point Reference Voltage
*2
Output Amplitude Control Voltage
Input Amplitude ( Differential )
Input Amplitude ( Single Ended )
Operating Temperature at Package Base
Input Interface
Output Interface
Symbol
VS
VD
VB1
VB2
VC1
Vin
Ts
Min
-5.46
Vs+3
VS+0.8
Typ
-5.2
-1.5
Max
-4.94
0
VS+2.2
Unit
V
V
V
V
V
Vpp
Vpp
°C
-4.2
VS
0.25
0.5
0
-3.95
-3.7
VS+1.0
1
1
85
AC coupled (External blocking capacitor is required)
AC coupled (External Bias-T is required for VD)
*1 VD is supplied at Output Port using External Bias-T.
*2 VB2 can be open or biased by the external circuit.
For VB2 opened, VB2 is biased at about –3.95V ( VS=-5.2V ).
ELECTRICAL CHARACTERISTICS
Parameter
Input Data Rate
Supply Current of VS
Supply Current of VD
Pwer Dissipation
Output Amplitude (Max)
X-Point Control
Output Rise/Fall Time
Input Return Loss
*1
Symbol
Iss
I
D
Pw
Vo (Max)
Xp
Tr/Tf
S11
Condition
NRZ
@VD=-1.5V
@VC1=VS+1V,VD=-1.5V,Xp≅50%
NRZ, 50
Ω
load
50
Ω
load, 20%-80%
100kHz–10 GHz
Min
10.7
Typ
200
100
1
Max
250
150
Unit
Gbps
mA
mA
W
Vpp
3.7
40
4.0
60
40
13
%
ps
dB
Note) Equation of power Dissipation is
Pw = |VS * I
SS
| – |V
D
* I
D
|
*1 Output Amplitude (Max) is defined as each value of Out and Outb .
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ODHKGL4136HD-04
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Electronic Components
Power Supply
(VD)
KGL4136HD
AC CHARACTERISTICS TEST CIRCUIT
50Ω Transmission Line
GND
50Ω Transmission Line
PULSE
PATTERN
GENERATOR
∼
∼
∼
∼
∼
∼
Blocking
Capacitor
OUTB
INB
KGL4136HD
IN
OUT
Bias-T
OSCILLO
-SCOPE
Bias-T
VB1
VB2
0.1µF
VS
VC1
Fc=7.5GHz
Bessel
Filter
0.1µF
0.1µF
0.1µF
Power Supply
(VD)
Power Supply
(VB1)
Power Supply
(VS)
Power Supply
(VC1)
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ODHKGL4136HD-04
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Electronic Components
KGL4136HD
PACKAGE DIMENSIONS
(Top View)
4.445
32-0.2
28-0.635
PIN CONNECTIONS
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Symbol
GND
GND
GND
GND
GND
GND
GND
GND
GND
OUT
GND
GND
OUTB
GND
GND
GND
GND
GND
VC1
VS
VS
VB2
VB1
GND
GND
GND
GND
INB
GND
GND
IN
GND
Note
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Signal Output Port
Ground
Ground
Inverted Signal Output Port
Ground
Ground
Ground
Ground
Ground
Output Amplitude Control Port
Supply Voltage Port
Supply Voltage Port
Input Termination Port
X-Point Control and Inverted
Input Termination Port
Ground
Ground
Ground
Ground
Inverted Input Port
Ground
Ground
Signal Input Port
Ground
24
17
25
16
K4136
HD
32
9
7.0±0.2
1
8
7.0±0.2
1.5±0.25
Lot No.
Index
0.125
0.62
0.4
0.75±0.2
1.12±0.2
Unit : mm
Note) This package is non-hermetic.
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ODHKGL4136HD-04
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Electronic Components
KGL4136HD
TYPICAL OPERATING CHARACTERISTICS
Measured Condition
Display Factor
Input Signal
V : 1.0V/div, H : 20 ps/div, Offset : 0.0V
Operating Speed : 10.7Gbps
Input Amplitude : Differential 0.25Vpp , NRZ PRBS31 Through 7.5GHz Bessel Filter
Waveform of OUT
Vs
Vb1
Vc1
Vd
Power
: -5.2V Is
: -3.929V
: -4.2V
: -1.5V Id
: 0.938W
: 212.5mA
: 111.0mA
X-Point : 51.3%
Amplitude:
4.536pp
Tr
: 32.9ps
Tf
: 28.5ps
JitterP-P : 12.9ps
Waveform of OUTB
X-Point : 54.4%
Amplitude:
4.443Vpp
Tr
: 29.3ps
Tf
: 30.7ps
JitterP-P : 12.6ps
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