VG101
Product Features
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The Communications Edge
TM
Product Information
Cellular-band Variable Gain Amplifier
Product Description
The VG101 is a cellular-band high dynamic range
variable gain amplifier (VGA) packaged in a low
profile Pb-free / RoHS-compliant surface-mount
leadless package that measures 6 x 6 mm square.
The +22 dBm output compression point and +40
dBm output intercept point of the amplifier are
maintained over the entire attenuation range, making
the VG101 ideal for use in transmitter and receiver
AGC circuits and as a variable gain stage following
an LNA in high dynamic range receiver front ends.
Superior thermal design allows the product to have a
minimum MTTF rating of 1000 years at a mounting
temperature of +85 ºC. All devices are 100% RF &
DC tested and packaged on tape and reel for
automated surface-mount assembly.
Functional Diagram
Gain Ctrl
GND
GND
7
GND 8
GND 9
GND 10
RF IN 11
GND 12
GND 13
GND 14
15
GND
16
GND
17
GND
18
GND
19
N/C
20
GND
21
MATCH
6
5
4
3
GND
2
GND
GND
1
28 GND
27 GND
26 GND
25 RF OUT
24 GND
23 GND
22 GND
N/C
750 – 1000 MHz bandwidth
28 dB Attenuation Range
+40 dBm Output IP3
+22 dBm P1dB
Constant IP3 & P1dB over
attenuation range
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Single voltage supply
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Pb-free 6mm 28-pin QFN package
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MTTF > 1000 years
Amp
Variable
Attenuator
Applications
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Xmit & Rcv AGC circuitry for
mobile infrastructure
Function
Gain Control
No Connect
RF Input
Interstage Match
RF Output / DC bias
Ground
Pin No
5
7, 19
11
21
25
All other pins
Backside copper
Specifications
(1)
Parameter
Operational Bandwidth
Test Frequency
Gain at min. attenuation
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
Noise Figure at min. attenuation
Gain Variation Range
Gain Variation Control Voltage, V
CTRL
Group Delay
Supply Voltage
Operating Amplifier Current Range
Gain Control Pin Current
Units
MHz
MHz
dB
dB
dB
dBm
dBm
dB
dB
V
ns
V
mA
mA
Min
750
15
Typ
900
16
12
10
+22
+40
3
28.7
1
+5
150
Max
1000
See note 1
Conditions
+37
25.5
0
33.5
4.5
See note 2
V
CTRL
= 0 V
See note 3
See note 1
Frequency = 900 MHz
Pin 25
V
CTRL
= 4.5 V. See note 1.
120
180
20
1. Test conditions unless otherwise noted: 25ºC, Vdd = +5 V in a tuned application circuit. Vctrl is the control voltage through a BJT transistor and a 100
Ω
dropping resistor as shown in the same application circuit.
2. 3OIP measured with two tones at an output power of +5 dBm/tone separated by 10 MHz. The suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
3. The gain variation range is measured as the difference in gain with Vctrl = 0V and Vctrl = 4.5V at 0.9 GHz.
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
Amplifier Supply Voltage (pin 25)
Pin 5 (Gain Control) Current
RF Input Power (continuous)
Junction Temperature
-40 to +85
°C
-55 to +125
°C
+6 V
30 mA
+12 dBm
+220
°C
Rating
Ordering Information
Part No.
VG101*
VG101-F
VG101-PCB
*
Description
Cellular-band Variable Gain Amplifier
(tin-lead 6mm QFN package)
Cellular-band Variable Gain Amplifier
(lead-free/RoHS-compliant QFN package)
Fully Assembled Application Board
Operation of this device above any of these parameters may cause permanent damage.
This package is being phased out in favor of the lead-free/RoHS-compliant package type which is
backwards compatible for existing designs. Refer to WJPCN06MAY05TC1 on the WJ website.
Specifications and information are subject to change without notice
WJ Communications, Inc
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Phone 1-800-WJ1-4401
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FAX: 408-577-6621
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e-mail: sales@wj.com
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Web site: www.wj.com
Page 1 of 5
June 2005
WJCI [ WJ COMMUNICATION. INC. ]
