CGY 121 A
GaAs MMIC
Preliminary Datasheet
l
l
l
l
l
l
l
RF-in; -Vg
Vcontrol
6
RF-GND
5
4
Variable gain amplifier
(MMIC-Amplifier) for mobile communication
Typical Gain Control range over 50dB
Positive Control Voltage
50Ω input and output matched
Low power consumption
Operating voltage range: 2.7 to 6 V
Frequency range 800 MHz ... 2.5 GHz
3
2
1
Vd2; RF-out
RF-GND
Vd1
ESD:
Electrostatic discharge
sensitive device,
observe handling precautions!
Type
Marking
Ordering code
(taped)
Package
1)
CGY 121 A
Y9S
Q-62702-G66
MW-6
Maximum ratings
Characteristics
Drain voltage
Neg. supply voltage
Pos. control voltage
Channel temperature
Storage temperature range
Total power dissipation (TS < 81°C) 2)
Thermal resistance
Characteristics
Channel-soldering point (GND)
1)
2)
Symbol
max. Value
8
-8
4
150
-55...+150
550
Unit
V
V
V
°C
°C
mW
VD
VG
Vcon
TCh
T
stg
P
tot
Symbol
max. Value
125
Unit
K/W
R
thChS
Dimensions see page 9.
Please care for sufficient heat dissipation on the pcb!
*)
Pin-out changed compared to CGY120: 180° rotation
Siemens Aktiengesellschaft
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Semiconductor Group
1
23.06.98
HL HF PE GaAs1
1998-11-01
CGY 121 A
Functional block diagram:
VD1 (3)
VD2 (1)
Pin / -VG(4)
Pout (1)
Vcon (6)
Control
Circuit
GND (2, 5)
Pin #
1
2
3
4
5
6
Name
VD2 /
Pout
RF-Gnd
VD1
VG / Pin
RF-Gnd
Configuration
Drain voltage 2nd stage / RF-0utput
Drain voltage 1st stage
Negative voltage at current control circuit (-4V) / RF-Input
Vcontrol
Positive voltage for gain control (0V....3V)
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Semiconductor Group
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23.06.98
HL HF PE GaAs1
1998-11-01
CGY 121 A
Electrical characteristics
(TA = 25°C, f = 900 MHz, Vg = -4V, RS = RL = 50
Ω
unless otherwise specified)
Characteristics
Power Gain
Vd=3V; I=45mA; Vcon=3V
Input return loss
Vd=3V; I=45mA; Vcon=3V
Output return loss
Vd=3V; I=45mA; Vcon=3V
Gain Control Range
Vcon=3 V ... 0V; Vd=3V; I=45mA
1dB gain compression
Vd=3V; I=45mA; Vcon=3V
Symbol
min
17
-
-
48
-
typ
19
11
10
53
14
max
-
-
-
-
-
Unit
dB
dB
dB
dB
dBm
G
RL
in
RL
out
dG
P1
dB
Electrical characteristics
(
T
A = 25°C ,f = 1800 MHz, Vg=-4V, RS = RL = 50
Ω
unless otherwise specified)
Characteristics
Power Gain
Vd=3V; I=45mA; Vcon=3V
Input return loss
Vd=3V; I=45mA; Vcon=3V
Output return loss
Vd=3V; I=45mA; Vcon=3V
Gain Control Range
Vcon=3 V ... 0V; Vd=3V; I=45mA
1dB gain compression
Vd=3V; I=45mA; Vcon=3V
DC characteristics
Characteristics
Gate current (Pin 4)
Vg=-4V
Control current (Pin 6)
Vg=-4V; Vcon=0V...3V
Supply current
Vg = -4V; Vcon = 3V
Siemens Aktiengesellschaft
Symbol
min
15.5
-
-
48
-
typ
17.5
10
8.5
53
14
max
-
-
-
-
-
Unit
dB
dB
dB
dB
dBm
G
RL
in
RL
out
dG
P1
dB
Symbol
Ig
Ic
Id
min
-
-
-
typ
1.0
0.5
45
max
-
-
-
Unit
mA
mA
mA
3
Semiconductor Group
3
23.06.98
HL HF PE GaAs1
1998-11-01
CGY 121 A
Application Circuit
f = 900 MHz
Vd
C3
R2
R3
C4
L1
3
L2
Output
1
Input
50 Ohm C1
R1
4
CGY121
6
2,5
C2
50 Ohm
C5
Vg
GND
Vcontrol
C1
R1
CGY 121
C3
L1
R2
C5
L2
R3
C4
C2
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Semiconductor Group
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23.06.98
HL HF PE GaAs1
1998-11-01
CGY 121 A
Parts List
Frequency
C1, C2 (Siemens Size 0603)
C3, C4 (Siemens Size 0603)
C5 (Siemens Size 0603)
L1 (Coilcraft 0805CS-150XKBC)
L2 (Coilcraft 0805CS-270XMBC)
R1 (Siemens B 54102-A1271-J60)
R2 (Siemens B 54102-A1120-J60)
R3
900 MHz
22 pF
100 nF
47 nF
15 nH
27 nH
270 Ohm
12 Ohm
6.8 Ohm
0603
0603
0603
0805
0805
0805
0805
0805
Application Circuit
f = 1900 MHz
Vd
C3
C6
3
R2
R3
C4
L1
Output
1
6
2,5
Input
50 Ohm C1
R1
4
CGY121
C2
50 Ohm
C5
Vg
GND
Vcontrol
Siemens Aktiengesellschaft
5
Semiconductor Group
5
23.06.98
HL HF PE GaAs1
1998-11-01
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