OKI Electronic Components
July 3, 2001
GTD-18187 Rev. 3.0
KGL4112F
Preliminary
10 Gbps AGC Amplifier IC
DESCRIPTION
KGL4112F is an ultra-broadband AGC (Automatic Gain Control) Amplifier implemented 0.1
m gate GaAs P-
HEMT device technology by using the Gilbert-Cell multiplier circuit configuration.
FEATURES
Broadband Amplifier:
to 10 GHz
Wide Variable Gain Range: 25 dB
Single Supply Voltage:
--
5 V
Power Consumption
< 1W (@VS=--
5 V)
BLOCK DIAGRAM
Vagc
Vpd2
Vpd1
OUT
VB1
VB2
Peak
Detector
Peak
Detector
Gilbert-Cell
Multiplier
VS
OUTB
IN
INB
VC1
GTD-18187 Rev. 3.0
1
Electronic Components
KGL4112F
ABSOLUTE MAXIMUM RATINGS
Items
Symbol
Min.
Max.
Unit
Supply Voltage
VS
-6.5
0.3
V
Output Saturation Control Voltage
VC1
-6.5
VS + 1.2
(Max. 0.3)
V
Bias Control Voltage
VB1,VB2
VS - 5
(Min. --6.5)
VS + 3.5
(Max. 0.3)
V
Gain Control Voltage
Vagc
--6.5
VS + 4.5
(Max. 0.3)
V
Operating Temperature at Package Base
Ts
--45
100
C
Storage Temperature
T
ST
--45
125
C
RECOMMENDED OPERATION CONDITION
Parameter
Symbol
Min.
Typ.
Max.
Unit
Supply Voltage
VS
-5.5
-5.2
-4.9
V
Output Saturation Control Voltage
VC1
VS
VS + 0.5
V
Bias Control Voltage
VB1,VB2
VS + 1.1
VS +1.9
V
Gain Control Voltage
Vagc
VS + 1.9
VS + 3.6
V
Operating Temperature at Package Base
Ta
0
80
C
ELECTRICAL CHARACTERISTICS ( Ta = 25
C )
Parameter
Symbol
Min.
Typ.
Max.
Unit
Condition
Power Consumption
Pc
1.2
W
Maximum Gain
Gmax
22
dB
Bandwidth (--3 dB)
Fc
8
10
GHz
@ Maximum Gain
Variable Gain Range
GR
25
30
dB
Output Saturation Amplitude
Vop
1.0
1.8
V
PP
@ VC1 = VS
Peak Detector Sensitivity
Vpk
0.3
V/V
PP
Input Return Loss
S11
15
12
dB
< 8 GHz
< 10 GHz
Output Return Loss
S22
12
8
dB
< 8 GHz
< 10 GHz
GTD-18187 Rev. 3.0
1
Electronic Components
KGL4112F
TYPICAL CHARACTERISTICS
V:200mV/div , H:20ps/div
Input 10Gbps, PN 31
Input 30 mV
PP
Input 1.75 V
PP
0.5Vpp
Gmax
=26dB
GR =31dB
Fc = 10GHz
Vagc=-3.00V
-2.45V
-2.27V
-2.14V
0.1
1
10
-10
0
10
20
30
Frequency (GHz)
S21 (dB)
S11
S22
-12
-15
Vagc=-3.00V
Input Return < -15.5 dB (< 10GHz)
Output Return < -13.0 dB (< 10GHz)
0.1
1
10
-40
-30
-20
-10
0
Frequency (GHz)
Input and Output returns (dB)
Vop = 1.35Vpp
Vpk = 0.45 V/Vpp
0
0.5
1
1.5
-1.6
-1.4
-1.2
-1
-0.8
-0.6
Output amplitude (V
PP
)
Vpd1, Vpd2 (V)
V
agc
=-3.00V
Vpd1
Vpd2
GTD-18187 Rev. 3.0
1
Electronic Components
KGL4112F
PACKAGE DIMENSIONS
PIN CONNECTION
No.
Symbol
Note
No.
Symbol
Note
1
VB2
Input-bar termination port (External
capacitor is required) and input-bar
bias control port
11
Vpd1
Output of peak detector(OUT)
2
N.C.
No connection
12
VS
Supply voltage port
3
N.C.
No connection
13
Vagc
Gain control port
4
Vc1
Output saturation voltage control
port
14
VS
Supply voltage port
5
Vpd2
Output of peak detector(OUTB)
15
VB1
Input termination port (External
capacitor is required) and input bias
control port
6
GND
Ground
16
GND
Ground
7
OUTB
Signal output-bar port
17
IN
Signal input port
8
GND
Ground
18
GND
Ground
9
OUT
Signal output port
19
INB
Signal input-bar port
10
GND
Ground
20
GND
Ground
9.6
12
8.6
12
20-0.3
5.08
16-1.27
1
5
6
10
11
15
16
20
0.5
0.5
1.5
0.6
0.125
11
(Top View)
(Unit : mm)
GTD-18187 Rev. 3.0
1
Electronic Components
KGL4112F
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