參數(shù)資料
型號: VG101
元件分類: 可變增益放大器
英文描述: Variable Gain Amplifiers
中文描述: 可變增益放大器
文件頁數(shù): 2/3頁
文件大?。?/td> 164K
代理商: VG101
This document contains information on a new product.
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
July 2003
VG101
Cellular-band Variable Gain Amplifier
Product Information
The Communications Edge
TM
Application Circuit: 750 – 1000 MHz (VG101-PCB)
Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness
Pin 21 needs to be connected to ground through a high impedance
transmission line as shown for proper interstage matching. The position
of R2 can be varied for optimal performance.
The amplifier is biased through Pin 25 and should be connected directly
into a voltage regulator.
Distances are shown from the edge-to-edge for the land pattern.
Bill of Materials
Ref. Des.
Description
C1, C3
47 pF Chip Capacitor
C2, C4
0.01
μ
F Chip Capacitor
L1
82 nH Chip Inductor
L2
39 nH Chip Inductor
R1
100
Chip Resistor
Q1
MMBT2222 Motorola Transistor
U1
VG101 Variable Gain Amplifier
Size
0603
0603
0603
0603
0603
SOT-23
QFN 6x6
S-Parameters
Attenuation Control Voltage = 0 V, 25°C
8
10
12
14
16
18
700
800
Frequency (MHz)
900
1000
S
-20
-15
-10
-5
0
5
R
S22
S11
S21
S11, S22, S21 vs Gain Control Voltage
frequency = 900 MHz, 25°C
-30
-20
-10
0
10
20
0
1
2
3
4
5
Gain Control Voltage (V)
-
-
-
0
1
N
S22
S11
Normaized to the maxmum
Normalized
Gain Flatness
25°C
-2.0
-1.5
-1.0
-0.5
0.0
0
5
10
15
20
25
Normalized Attenuation (dB)
F
f
= 864 - 889 MHz
f
= 824 - 849 MHz
Phase Shift vs. Normalized Gain
frequency = 900 MHz, 25°C
-30
-25
-20
-15
-10
-5
0
-30
-25
-20
-15
-10
-5
0
Normalized Gain (dB)
N
Output Intercept Point vs. Output Power
frequency = 900 MHz, 25°C
20
25
30
35
40
-5
0
5
10
15
Output Power (dBm)
O
OIP3 / P1dB vs. Normalized Gain
frequency = 900 MHz, Pout = +10 dBm, 25°C
15
20
25
30
35
40
-20
-15
-10
-5
0
Normalized Gain (dB)
M
P1dB
OIP
Normalized to the maximum gain level of 17 dB
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