VG025
10
5
S21 (dB)
The Communications Edge
TM
Product Information
High Linearity Variable Gain Amplifier
2140 MHz Circuit Performance (VG025-PCB2000)
S21 vs. Frequency vs. Control Voltage
S11 vs. Frequency vs. Control Voltage
S22 vs. Frequency vs. Control Voltage
0
-5
S11 (dB)
-10
-15
-20
-25
2100
Vctrl=0.00V
Vctrl=1.72V
Vctrl=0.82V
Vctrl=4.50V
Vctrl=1.15V
0
-5
S22 (dB)
-10
-15
-20
-25
2100
Vctrl=0.00V
Vctrl=1.72V
Vctrl=0.82V
Vctrl=4.50V
Vctrl=1.15V
0
-5
Vctrl=0.00V
Vctrl=1.72V
Vctrl=0.82V
Vctrl=4.50V
Vctrl=1.15V
-10
2100
2120
2140
2160
2180
2200
2120
2140
2160
2180
2200
2120
2140
2160
2180
2200
Frequency (MHz)
P1dB vs. Frequency
Vctrl=0V (Minimum attenuation)
Frequency (MHz)
Phase change vs. Attenuation
25 °C, 2140 MHz
Frequency (MHz)
Noise Figure vs. Frequency
Vctrl=0V (Maximum Gain Setting)
26
50
phase change (deg)
40
9
8
NF (dB)
7
6
5
4
1700
24
P1dB (dBm)
22
20
18
16
1700
30
20
10
0
1800
1900
2000
2100
2200
0
2
4
Frequency (MHz)
6
8
10
Attenuation (dB)
12
14
1800
1900
2000
2100
2200
Frequency (MHz)
IMD products vs. Output Power
-40
IMD products (dBc)
-60
-80
-100
-120
fundamental frequency = 2140, 2141 MHz; +25 °C, 0dB Atten
OIP3 vs. Attenuation Setting
45
OIP3 (dBm)
40
35
30
25
0
2
4
6
Attenuation (dB)
25 °C, 2140 MHz
frequency = 2140, 2141 MHz, +5 dBm/tone, +25 °C
OIP3 vs. Output Power
45
40
35
30
+25 °C
25
8
10
-4
0
4
8
Output Power (dBm)
Normalized Gain vs. Vctrl
25 °C, 2140 MHz
frequency = 2140, 2141 MHz, 0dB Atten.
IMD_Low
IMD_High
OIP3 (dBm)
-40 °C
+85 °C
12
16
-4
0
4
8
Output Power (dBm)
Ictrl vs. Vctrl
25 °C
12
16
Gain vs. Pin 8 Attn. Control Current
10
Normalized Gain (dB)
8
6
Gain (dB)
4
2
0
-2
-4
-6
0
5
10
15
20
25
Pin 8 Attenuation Control Current (mA)
0
-2
30
25
Ictrl (mA)
20
15
10
5
0
0
1
2
Vctrl (V)
3
4
5
-4
-6
-8
-10
-12
-14
0
1
2
Vctrl (V)
3
4
5
Specifications and information are subject to change without notice
WJ Communications, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: sales@wj.com
•
Web site: www.wj.com
Page 6 of 7
January 2006
WJCI [ WJ COMMUNICATION. INC. ]
