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VG111-PCB2100 Datasheet(PDF) 2 Page - WJ Communication. Inc.

Part # VG111-PCB2100
Description  PCS/UMTS-band Variable Gain Amplifier
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Manufacturer  WJCI [WJ Communication. Inc.]
Direct Link  http://www.wj.com
Logo WJCI - WJ Communication. Inc.

VG111-PCB2100 Datasheet(HTML) 2 Page - WJ Communication. Inc.

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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 2 of 7
February 2006
VG111
PCS/UMTS-band Variable Gain Amplifier
Product Information
The Communications Edge
TM
Application Circuit: 1.8 – 2.0 GHz (VG111-PCB1900)
• Pins 7, 19, and 21 should not be connected.
• The amplifier is biased through Pin 25 and should be connected directly into a voltage regulator.
• DNP represents Do Not Place.
• Distances are shown from the edge-to-edge for the land pattern.
Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness
Bill of Materials
Ref. Des.
Description
Size
C1, C7
47 pF Chip Capacitor
0603
C2, C5
Do Not Place
C3, C4
0.01
μF Chip Capacitor
0603
C6
0.5 pF Chip Capacitor
0603
L1, L2
22 nH Chip Inductor
0603
R1
100
Ω Chip Resistor
0603
R2
2.2
Ω Chip Resistor
0603
Q1
MMBT2222 Motorola Transistor
SOT-23
U1
VG111 Variable Gain Amplifier
QFN 6x6
OIP3 vs. Output Power
frequency = 1900, 1901 MHz, 0dB Atten.
25
30
35
40
45
-4
0
4
8
12
16
Output Power (dBm)
+25C
-40C
+85C
OIP3 vs. Attenuation Setting
frequency = 1900, 1901 MHz, +10 dBm/tone, +25° C
25
30
35
40
45
02
46
8
10
Attenuation (dB)
ACPR vs. Channel Power
1960 MHz, IS-95, 9 Ch. Forward, ±885 kHz offset, 30 kHz Meas BW, 25°C
-70
-60
-50
-40
10
11
12
13
14
15
16
Output Channel Power (dBm)
0dB Attn
2.5dB Attn
5dB Attn
10dB Attn
Gain vs. Pin 5 Attn. Control Current
-20
-15
-10
-5
0
5
10
15
20
0
5
10
15
20
25
Pin 5 Attenuation Control Current (mA)
+25°C
-40°C
+85°C
Normalized Gain vs. Pin 5 Control Current
0
5
10
15
20
25
30
35
0.1
1.0
10.0
100.0
Pin 5 Attenuation Control Current (mA)
+25°C
-40°C
+85°C


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