Siemens CGY121A Datasheet
GaAs MMIC
CGY 121 A
Preliminary Datasheet
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Variable gain amplifier
(MMIC-Amplifier) fo r mobile commun ication
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Typical Gain Control range over 50dB
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Positive Control Voltage
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50Ω input and output matched
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Low power consumption
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Operating voltage range: 2.7 to 6 V
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Frequency range 800 MHz ... 2.5 GHz
Vcontrol
RF-GND
5
6
ESD: Electrostatic discharge sensitive device,
observe handling precautions!
Type Marking Ordering code
(taped)
CGY 121 A Y9S Q-62702-G66 MW-6
RF-in; -Vg
4
1
Vd2; RF-out
Package
2
RF-GND
3
Vd1
1)
Maximum ratings
Characteristics Symbol max. Value Unit
Drain voltage
Neg. supply voltage
Pos. control voltage
Channel temperature
Storage temperature range
Total power dissipation (TS < 81°C)
2)
V
D
V
G
Vcon
T
Ch
T
stg
P
tot
8V
-8 V
4V
150 °C
-55...+150 °C
550 mW
Thermal resistance
Characteristics Symbol max. Value Unit
Channel-soldering point (GND)
1)
Dimensions see page 9.
2)
Please care for sufficient heat dissipation on the pcb!
*)
Pin-out changed compared to CGY120: 180° rotation
R
thChS
125 K/W
Siemens Aktiengesellschaft 1 23.06.98
HL HF PE GaAs1
Semiconductor Group 1 1998-11-01Semiconductor Group 1 1998-11-01
Functional block diagram:
CGY 121 A
Pin / -VG(4)
Vcon (6)
Control
Circuit
Pin # Name Configuration
VD1 (3)
GND (2, 5)
VD2 (1)
Pout (1)
1
VD2 /
Drain voltage 2nd stage / RF-0utput
Pout
2
3
4
5
6
RF-Gnd
VD1
VG / Pin
RF-Gnd
Vcontrol
Drain voltage 1st stage
Negative voltage at current control circuit (-4V) / RF-Input
Positive voltage for gain control (0V....3V)
Siemens Aktiengesellschaft 2 23.06.98
HL HF PE GaAs1
Semiconductor Group 2 1998-11-01Semiconductor Group 2 1998-11-01
CGY 121 A
Electrical characteristics
(
T
= 25°C, f = 900 MHz, Vg = -4V, RS = RL = 50 Ω unless otherwise specified)
A
Characteristics Symbol min typ max Unit
Power Gain
G
17 19 - dB
Vd=3V; I=45mA; Vcon=3V
Input return loss
RL
in
-11-dB
Vd=3V; I=45mA; Vcon=3V
Output return loss
RL
out
-10-dB
Vd=3V; I=45mA; Vcon=3V
Gain Control Range
dG
48 53 - dB
Vcon=3 V ... 0V; Vd=3V; I=45mA
1dB gain compression
P
1
dB
-14-dBm
Vd=3V; I=45mA; Vcon=3V
Electrical characteristics
(
T
= 25°C ,f = 1800 MHz, Vg=-4V, RS = RL = 50 Ω unless otherwise specified)
A
Characteristics Symbol min typ max Unit
Power Gain
G
15.5 17.5 - dB
Vd=3V; I=45mA; Vcon=3V
Input return loss
RL
in
-10-dB
Vd=3V; I=45mA; Vcon=3V
Output return loss
RL
out
-8.5-dB
Vd=3V; I=45mA; Vcon=3V
Gain Control Range
dG
48 53 - dB
Vcon=3 V ... 0V; Vd=3V; I=45mA
1dB gain compression
P
1
dB
-14-dBm
Vd=3V; I=45mA; Vcon=3V
DC characteristics
Characteristics Symbol min typ max Unit
Gate current (Pin 4)
Ig - 1.0 - mA
Vg=-4V
Control current (Pin 6)
Ic - 0.5 - mA
Vg=-4V; Vcon=0V...3V
Supply current
Id - 45 - mA
Vg = -4V; Vcon = 3V
Siemens Aktiengesellschaft 3 23.06.98
HL HF PE GaAs1
Semiconductor Group 3 1998-11-01Semiconductor Group 3 1998-11-01
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