The Communications Edge TM
VG112
PCS/UMTS-band Variable Gain Amplifier
Product Information
2140 MHz Application Circuit Performance
Performance using the circuitry on the VG112-PCB Evaluation Board
OIP3 vs. Output Power vs. Temperature
OIP3 vs. Output Power vs. Temperature
frequency = 2140, 2141 MHz, 5dB Atten.
OIP3 vs. Output Power vs. Temperature
frequency = 2140, 2141 MHz, 0dB Atten.
frequency = 2140, 2141 MHz, 10dB Atten.
48
46
44
42
40
38
48
46
44
42
40
38
48
46
44
42
40
38
+25 °C
12
-40 °C
14
+85 °C
+25 °C
12
-40 °C
14
+85 °C
+25 °C
12
-40 °C
14
+85 °C
10
16
18
20
10
16
18
20
10
16
18
20
Output Power per tone (dBm)
Output Power per tone (dBm)
Output Power per tone (dBm)
OIP3 vs. Output Power vs. Temperature
frequency = 2140, 2141 MHz, 15dB Atten.
OIP3 vs. Pout vs. Attenuation Setting
frequency = 2140, 2141 MHz, +25 °C
48
46
44
42
40
38
48
46
44
42
40
38
0 dB Atten
5 dB Atten
10 dB Atten
15 dB Atten
+25 °C
12
-40 °C
14
+85 °C
10
16
18
20
10
12
14
16
18
20
Output Power per tone (dBm)
Output Power per tone (dBm)
ACLR vs. Channel Power
P1dB vs. Temperature
frequency = 2140 MHz, 0dB Atten.
IMD products vs. Output Power
fundamental frequency = 2140, 2141 MHz; +25 °C, 0dB Atten
3GPP W-CDMA, Test Model 1+64 DPCH, ±5 MHz offset, 2140 MHz
-40
-50
-60
-70
-80
32
30
28
26
24
22
-40
-45
-50
-55
-60
IMD_Low
IMD_High
-40 C
20
+25 C
21
+85 C
18
19
22
10
12
14
16
18
20
-40
-15
10
35
60
85
Output Channel Power (dBm)
Output Power per tone (dBm)
Temperature (°C)
Gain vs. Vctrl
2140 MHz
Normalized Gain vs. Vctrl
2140 MHz
Noise Figure vs. Frequency vs. Temperature
Vctrl=0V (Maximum Gain Setting)
10
9
30
0
-40 °C
+25 °C
+85 °C
25 °C
-40 °C
85 °C
25 °C
-40 °C
85 °C
-5
-10
-15
-20
-25
-30
20
10
0
8
7
6
5
-10
1800
1900
2000
Frequency (MHz)
2100
2200
0
1
2
3
4
5
0
1
2
3
4
5
Vctrl (V)
Vctrl (V)
Specifications and information are subject to change without notice
Page 3 of 4 May 2006
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
WJCI [ WJ COMMUNICATION. INC. ]
