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VG111
Product Features
* * * * *
PCS/UMTS-band Variable Gain Amplifier
Product Description
The VG111 is a PCS / UMTS-band high dynamic range variable gain amplifier (VGA) packaged in a low profile Pbfree / 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 +85 C. All devices are 100% RF & DC tested and packaged on tape and reel for automated surfacemount assembly.
Functional Diagram
Gain Ctrl GND 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 GND 20 GND 21 GND 6 GND GND 2 5 4 3 GND 1 28 GND 27 GND 26 GND 25 RF OUT 24 GND 23 GND 22 GND
1700 - 2200 MHz 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
Amp
Variable Attenuator
Applications
* Xmit & Rcv AGC circuitry for mobile infrastructure
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 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, VCTRL Group Delay Supply Voltage Operating Amplifier Current Range Gain Control Pin Current
Units
MHz MHz dB dB dB dBm dBm dB MHz dB dB dB dBm dBm dB dB V ns V mA mA
Min
1700 12
Typ
1900 14 12 11 +22 +39.5 4.3 2140 13.3 14 14 +22 +39.5 4.5 26.6 0.6 +5 150
Max
2200 See note 1
Conditions
+37
See note 2 VCTRL = 0 V See note 1
23.5 0
32.5 4.5
See note 2 VCTRL = 0 V See note 3 See note 1
120
180 20
Pin 25 VCTRL = 4.5 V. See note 1.
1. Test conditions unless otherwise noted: 25C, Vdd = +5 V in a tuned application circuit. Vctrl is the control voltage through a BJT transistor and a 100 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
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.
VG111-F VG111-PCB1900 VG111-PCB2100
Description
PCS/UMTS-band 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
Specifications and information are subject to change without notice
Operation of this device above any of these parameters may cause permanent damage.
WJ Communications, Inc * Phone 1-800-WJ1-4401 * FAX: 408-577-6621 * e-mail: sales@wj.com * Web site: www.wj.com
Page 1 of 6
January 2007
VG111
PCS/UMTS-band Variable Gain Amplifier
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 F Chip Capacitor 0.4 pF Chip Capacitor 22 nH Chip Inductor 100 Chip Resistor 2.2 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, 25C
-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 15 16
4 8 Output Power (dBm)
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 15 20 25 Pin 5 Attenuation Control Current (mA)
+25C -40C +85C
35 30 25 20 15 10 5 0 0.1 1.0 10.0 100.0 Pin 5 Attenuation Control Current (mA)
+25C -40C +85C
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 6 January 2007
VG111
S21 vs. Frequency
Vctrl=0V (Minimum attenuation)
PCS/UMTS-band Variable Gain Amplifier
VG111-PCB1900 Application Circuit Performance (cont'd)
S11 vs. Frequency
Vctrl=0V (Minimum attenuation)
S22 vs. Frequency
Vctrl=0V (Minimum attenuation)
15 14 13
0
0
-40C
-5 -10
+25C
+85C
-5 -10 -15 -20
-40C
+25C
+85C
12 11 -15
-40C
10 1700 1750
+25C
1800
+85C
-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
NF (dB)
10 8 6 4 2
22 20 18
-40C
16 1880
+25C
1920
+85C
1960 2000
0 1700 1750
-40C
1800 1850
+25C
1900
+85C
1950 2000
Frequency (MHz)
Frequency (MHz)
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 3 of 6 January 2007
VG111
PCS/UMTS-band Variable Gain Amplifier
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 C3, C4 C5 C2,C6 L1, L2 R1 R2 Q1 U1
Bill of Materials Description 47 pF Chip Capacitor 0.01 F Chip Capacitor 0.5 pF Chip Capacitor Do Not Place 22 nH Chip Inductor 100 Chip Resistor 2.2 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 = 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, 25C
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 15 20 25 Pin 5 Attenuation Control Current (mA)
+25C -40C +85C
35 30 25 20 15 10 5 0 0.1 1.0 10.0 100.0 Pin 5 Attenuation Control Current (mA)
+25C -40C +85C
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 4 of 6 January 2007
VG111
S21 vs. Frequency
Vctrl=0V (Minimum attenuation)
PCS/UMTS-band Variable Gain Amplifier
VG111-PCB2100 Application Circuit Performance (cont'd)
S11 vs. Frequency
Vctrl=0V (Minimum attenuation)
S22 vs. Frequency
Vctrl=0V (Minimum attenuation)
15 14
0
0
-40C
-5
+25C
+85C
-5 -10 -15 -20
-40C
+25C
+85C
13 12 11
-10 -15
-40C
10 2110 2120
+25C
2130
+85C
-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
NF (dB)
10 8 6 4 2 0 2110
20 18 16 14 -40 -15 10 35 Temperature (C) 60 85
-40C
2120 2130 2140
+25C
2150
+85C
2160 2170
Frequency (MHz)
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 5 of 6 January 2007
VG111
PCS/UMTS-band Variable Gain Amplifier
VG111-F Mechanical Information
This package is lead-free/RoHS-compliant. The plating material on the pins is annealed matte tin over copper. It is compatible with both lead-free (maximum 260 C reflow temperature) and leaded (maximum 245 C reflow temperature) soldering processes.
Outline Drawing
Product Marking
The component will be lasermarked with a "VG111F" designator with an alphanumeric lot code on the top surface of the package. The obsolete tin-lead package is marked with an "VG111" designator followed by an alphanumeric lot code. Tape and reel specifications for this part will be located on the website in the "Application Notes" section.
ESD / MSL Information
ESD Rating: Value: Test: Standard: ESD Rating: Value: Test: Standard: Class 1B Passes 500V to <1000V Human Body Model (HBM) JEDEC Standard JESD22-A114 Class IV Passes 1000V to <2000V Charged Device Model (CDM) JEDEC Standard JESD22-C101
Mounting Configuration / Land Pattern
MSL Rating: Level 2 at +260C convection reflow Standard: JEDEC Standard J-STD-020
Functional Pin Layout
Gain Ctrl GND 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 GND 20 GND 21 GND 6 GND GND 2 5 4 3 GND 1 28 GND 27 GND 26 GND 25 RF OUT 24 GND 23 GND 22 GND
Amp
Variable Attenuator
Thermal Specifications
Parameter
Operating Case Temperature Thermal Resistance, Rth (1) Junction Temperature, Tj (2)
MTTF vs. GND Tab Temperature
1000
Rating
-40 to +85 C 59 C / W 129 C
100
Function Gain Control RF Input RF Output / DC bias No Connect or GND Ground The even numbered pins are hard grounded to the backside paddle internally.
Pin No 5 11 25 All other pins Backside coppe
1. The thermal resistance is referenced from the hottest part of the junction to the backside ground paddle. 2. This corresponds to the typical biasing condition of +5V, 150 mA at an 85 C case temperature. A minimum MTTF of 1 million hours is achieved for junction temperatures below 160 C.
10
1 60 70 80 90 100 Tab Temperature (C) 110
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 6 of 6 January 2007

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