VG111
1.7 – 2.7 GHz Variable Gain Amplifier
Product Information
Product Features
1.7 – 2.7 GHz bandwidth
26.6 dB Attenuation Range
+39.5 dBm Output IP3
+22 dBm P1dB
Constant IP3 & P1dB over
attenuation range
•
Single voltage supply
•
Pb-free 6mm 28-pin QFN package
•
MTTF > 1000 years
•
•
•
•
•
Product Description
The VG111 is a 1.7-2.7GHz 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 +39.5 dBm
output intercept point of the amplifier are maintained over
the entire attenuation range, making the VG111 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 +85º C. All devices are 100% RF & DC
tested and packaged on tape and reel for automated surface-
mount assembly.
Functional Diagram
Gain Ctrl
GND
GND
GND
GND
GND
2
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
GND
20
GND
21
GND
6
5
4
3
GND
1
28 GND
27 GND
26 GND
25 RF OUT
24 GND
23 GND
22 GND
Amp
Variable
Attenuator
Applications
•
Xmit & Rcv AGC circuitry for
mobile infrastructure
Specifications
(1)
Parameter
Operational Bandwidth
Test Frequency
(1)
Gain at min. attenuation
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
(2)
Noise Figure at min. attenuation
Gain Variation Range
(3)
Group Delay
Supply Voltage
Amplifier Current,
Pin 25
Gain Control Voltage, V
CTRL
Gain Control Current, Vc
TRL=
4.5V
Typical Performance
Unit Min Typ Max
MHz
MHz
dB
dB
dB
dBm
dBm
dB
dB
ns
V
mA
V
mA
1700
12
1900
14
12
11
+22
+39.5
4.3
26.6
0.6
+5
150
2700
Parameter
Frequency
Gain at min. attenuation
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
(2)
Noise Figure at min. attenuation
Gain Variation Range
Supply Voltage
Amplifier Current, Pin25
(1)
Units
MHz
dB
dB
dB
dBm
dBm
dB
dB
V
mA
Typical
1900 2140 2600
14
13.3
8.1
12
14
6.8
11
14
10.5
+22
+22
+21
+39.5 +39.5 +39.5
4.3
4.5
26.6 26.6 33.6
+5
150
+37
23.5
32.5
120
0
180
4.5
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
1.9 GHz.
Absolute Maximum Rating
Parameter
Storage Temperature
Amplifier Supply Voltage (pin 25)
Pin 5 (Gain Control) Current
RF Input Power (continuous)
Junction Temperature, Tj
Thermal Resistance, Rth
Rating
-55 to +125
°C
+6 V
30 mA
+12 dBm
+160° C
59
°C
/ W
Ordering Information
Part No.
VG111-F
VG111-PCB1900
VG111-PCB2100
Description
1.7-2.7GHz Variable Gain Amplifier
(lead-free/RoHS-compliant QFN package)
1.8 – 2.0 GHz Fully Assembled Application Board
2.0 – 2.2 GHz Fully Assembled Application Board
Operation of this device above any of these parameters may cause permanent damage.
Standard T/R size = 500 pieces on a 7” reel.
Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6633
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 1 of 7 January 2009
VG111
1.7 – 2.7 GHz Variable Gain Amplifier
Product Information
Application Circuit: 1.8 – 2.0 GHz (VG111-PCB1900)
Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness
•
The amplifier is biased through Pin 25 and should be connected directly into a voltage regulator.
•
Components shown in the silkscreen but not on the schematic are not used for this circuit.
•
Distances are shown from the edge-to-edge for the land pattern.
Ref. Des.
C1, C7
C2, C5
C3, C4
C6
L1, L2
R1
R2
Q1
U1
Bill of Materials
Description
47 pF Chip Capacitor
Do Not Place
0.01
µF
Chip Capacitor
0.5 pF Chip Capacitor
22 nH Chip Inductor
100
Ω
Chip Resistor
2.2
Ω
Chip Resistor
MMBT2222 Motorola Transistor
VG111 Variable Gain Amplifier
ACPR vs. Channel Power
Size
0603
0603
0603
0603
0603
0603
SOT-23
QFN 6x6
OIP3 vs. Output Power
45
40
35
30
25
-4
0
+25C
-40C
12
+85C
16
frequency = 1900, 1901 MHz, 0dB Atten.
OIP3 vs. Attenuation Setting
45
40
35
frequency = 1900, 1901 MHz, +10 dBm/tone, +25° C
-40
1960 MHz, IS-95, 9 Ch. Forward, ±885 kHz offset, 30 kHz Meas BW, 25°C
-50
0dB Attn
2.5dB Attn
5dB Attn
10dB Attn
-60
30
25
0
2
4
6
Attenuation (dB)
8
10
-70
10
11
12
13
14
4
8
Output Power (dBm)
15
16
Output Channel Power (dBm)
Normalized Gain vs. Pin 5 Control Current
Gain vs. Pin 5 Attn. Control Current
20
15
10
5
0
-5
-10
-15
-20
0
5
35
+25°C
-40°C
+85°C
30
25
20
15
10
5
0
+25°C
-40°C
+85°C
10
15
20
25
0.1
1.0
10.0
100.0
Pin 5 Attenuation Control Current (mA)
Pin 5 Attenuation Control Current (mA)
Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6633
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 2 of 7 January 2009
VG111
1.7 – 2.7 GHz Variable Gain Amplifier
Product Information
VG111-PCB1900 Application Circuit Performance (cont’d)
S21 vs. Frequency
Vctrl=0V (Minimum attenuation)
S11 vs. Frequency
Vctrl=0V (Minimum attenuation)
S22 vs. Frequency
Vctrl=0V (Minimum attenuation)
15
14
13
0
0
-40°C
-5
-10
+25°C
+85°C
-5
-10
-15
-20
-40°C
+25°C
+85°C
12
11
-15
-40°C
10
1700
1750
+25°C
1800
+85°C
-20
1850
1900
1950
2000
1700
1750
1800
1850
1900
1950
2000
1700
1750
1800
1850
1900
1950
2000
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
S21 vs. Frequency vs. Attenuation Setting
S11 vs. Frequency vs. Attenuation Setting
S22 vs. Frequency vs. Attenuation Setting
20
10
0
0 dB Atten
5 dB Atten
15 dB Atten
25 dB Atten
0
10 dB Atten
20 dB Atten
-5
-10
0
-10
0 dB Atten
5 dB Atten
20 dB Atten
10 dB Atten
25 dB Atten
-5
-10
-15
-20
-25
-30
0 dB Atten
10 dB Atten
20 dB Atten
5 dB Atten
15 dB Atten
25 dB Atten
-15
-20
-25
-30
2000
1700
1750
1800
1850
1900
1950
2000
Frequency (MHz)
P1dB vs. Frequency
Vctrl=0V (Minimum attenuation)
-20
1700
15 dB Atten
1750
1800
1850
1900
1950
1700
1750
1800
1850
1900
1950
2000
Frequency (MHz)
Frequency (MHz)
Noise Figure vs. Frequency
Vctrl=0V (Minimum attenuation)
26
24
N F (d B )
10
8
6
4
2
22
20
18
-40°C
16
1880
+25°C
1920
+85°C
1960
2000
0
1700
1750
-40°C
1800
1850
+25°C
1900
+85°C
1950
2000
Frequency (MHz)
Frequency (MHz)
Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6633
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 3 of 7 January 2009
VG111
1.7 – 2.7 GHz Variable Gain Amplifier
Product Information
Application Circuit: 2.0 – 2.2 GHz (VG111-PCB2100)
Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness
•
The amplifier is biased through Pin 25 and should be connected directly into a voltage regulator.
•
Components shown in the silkscreen but not on the schematic are not used for this circuit.
•
Distances are shown from the edge-to-edge for the land pattern.
Ref. Des.
C1, C7
C2
C3, C4
C5
C6
L1, L2
R1
R2
Q1
U1
Bill of Materials
Description
47 pF Chip Capacitor
0.2 pF Chip Capacitor
0.01
µF
Chip Capacitor
0.6 pF Chip Capacitor
Do Not Place
22 nH Chip Inductor
100
Ω
Chip Resistor
2.2
Ω
Chip Resistor
MMBT2222 Motorola Transistor
VG111 Variable Gain Amplifier
ACPR vs. Channel Power
Size
0603
0603
0603
0603
0603
0603
0603
SOT-23
QFN 6x6
OIP3 vs. Output Power
45
40
35
30
25
-4
0
+25C
-40C
12
+85C
16
frequency = 2140, 2141 MHz, 0dB Atten.
OIP3 vs. Attenuation
45
40
35
30
25
0
2
4
6
Attenuation (dB)
8
10
frequency = 2140, 2141 MHz, +10 dBm/tone, +25° C
-40
-45
-50
-55
-60
11
2140 MHz, 3GPP W-CDMA, Test Model 1 + 64 DPCH, ±5 MHz offset, 25°C
0dB Attn
2.5dB Attn
5dB Attn
10dB Attn
4
8
Output Power (dBm)
12
13
14
15
Output Channel Power (dBm)
Normalized Gain vs. Pin 5 Control Current
Gain vs. Pin 5 Attn. Control Current
20
15
10
5
0
-5
-10
-15
-20
0
5
10
35
+25°C
-40°C
+85°C
30
25
20
15
10
5
0
+25°C
-40°C
+85°C
15
20
25
0.1
1.0
10.0
100.0
Pin 5 Attenuation Control Current (mA)
Pin 5 Attenuation Control Current (mA)
Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6633
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 4 of 7 January 2009
VG111
1.7 – 2.7 GHz Variable Gain Amplifier
Product Information
VG111-PCB2100 Application Circuit Performance (cont’d)
S21 vs. Frequency
Vctrl=0V (Minimum attenuation)
S11 vs. Frequency
Vctrl=0V (Minimum attenuation)
S22 vs. Frequency
Vctrl=0V (Minimum attenuation)
15
14
0
0
-40°C
-5
+25°C
+85°C
-5
-10
-15
-20
-40°C
+25°C
+85°C
13
12
11
-10
-15
-40°C
10
2110
2120
+25°C
2130
+85°C
-20
2140
2150
2160
2170
2110
2120
2130
2140
2150
2160
2170
2110
2120
2130
2140
2150
2160
2170
Frequency (MHz)
S21 vs. Frequency vs. Attenuation Setting
Frequency (MHz)
Frequency (MHz)
S11 vs. Frequency vs. Attenuation Setting
S22 vs. Frequency vs. Attenuation Setting
20
10
0
0 dB Atten
5 dB Atten
15 dB Atten
25 dB Atten
0
10 dB Atten
20 dB Atten
-5
-10
0
-10
-20
2110
0 dB Atten
15 dB Atten
5 dB Atten
20 dB Atten
10 dB Atten
25 dB Atten
-5
-10
-15
-20
-25
-30
0 dB Atten
10 dB Atten
20 dB Atten
5 dB Atten
15 dB Atten
25 dB Atten
-15
-20
-25
-30
2170
2110
2130
2150
2170
Frequency (MHz)
P1dB vs. Temperature
2140 MHz, Vctrl=0V (minimum attenuation)
2130
2150
2110
2130
2150
2170
Frequency (MHz)
Frequency (MHz)
Noise Figure vs. Frequency
Vctrl=0V (Minimum attenuation)
24
22
N F (d B )
10
8
6
4
2
0
2110
20
18
16
14
-40
-15
10
35
Temperature (°C)
60
85
-40°C
2120
2130
2140
+25°C
2150
+85°C
2160
2170
Frequency (MHz)
Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6633
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 5 of 7 January 2009
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