AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
0.8– 4 GHz Frequency Tunable Ultra Low Noise Amplifier
Features
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Functional Diagram
Frequency Range: 0.8- 4 GHz
0.70 dB typ. NF
Tunable Noise match
20 dB Gain
14dBm Nominal P1dB
On-chip DC Blocks
10-70mA Tunable Bias current
0.15-um InGaAs pHEMT Technology
16-Pin QFN Plastic Package : 3mmx3mmx1mm
Typical Applications
Š
Š
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Receiver Front End
GSM/DCS/PCN/PCS, CDMA, WCDMA Base stations
GPRS, EDGE
DECT
Description
AMT2122102P is an Ultra Low Noise single stage GaAs MMIC Amplifier combining high gain and
state of the art noise figure for GSM/CDMA/WCDMA applications. Excellent 0.7dB Noise Figure
(RF connector loss included) can be achieved in these bands. External tuned inductor enables
optimum noise figure match and flexibility in frequency band of operation within 0.8-4.0 GHz band.
The LNA features 20dB gain with good I/O VSWR in the tuned band. It also features on-chip DC
Blocks and biasing flexibility to provide control over current consumption and dynamic range. The
device can operate over 10-70mA Drain current and 3-7V VDD as per specific requirements with
minor variation in RF Performance. The die is fabricated using reliable Low noise 0.15um InGaAs
pHEMT process. This chip is available in low cost 16 pin QFN plastic package.
Absolute Maximum Ratings (1)
Parameter
Positive DC Supply
RF Input Power
Supply current
Operating Temperature
Storage Temperature
Absolute Maximum
7
23
100
-55 to +85
-65 to +150
Units
V
dBm
mA
o
C
o
C
1. Operation beyond these limits may cause permanent damage to the component
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
Page 1 of 11
Email: info@astramtl.com
URL: www.astramtl.com
AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Electrical Specifications @ TA = 25 oC, Zo =50 Ω
Vd = +5V, Vg1=-0.3V, Vg2=+2V
Frequency
Units
Parameter
800
900
1280
1575
1800
1900
2170
2400
2700
MHz
22
22.5
21
20.5
20.5
20.5
20.5
20
20
dB
0.9
(1.2)
0.75
(0.9)
0.7
0.7
0.7
0.7
0.7
0.7
0.65
dB
I/P Return
Loss
-5.5
(1)
(-10.5)
-2.7
(1)
(-10)
-11.5
-10
-12.5
-14
-13
-17
-13
dB
O/P Return
Loss
-7.5
-7.8
-11.5
-17
-20
-20
-17
-16
-11
dB
Reverse
Isolation
-44
-43
-40
-39
-39
-38
-37
-36
-36
dB
P1dB
13
13
13
13
14
14
14
14
14
dBm
30
30
30
30
30
30
30
30
30
dBm
50
50
50
50
50
50
50
50
50
mA
16
(12.4)
16 (12.4)
5.6
3.6
1.8
1.6
1.6
1.6
1.6V
6.8
6.8
6.8
6.8
6.8
5.6
5.6
0
0
MCI Gold
Coil
MCI Gold
Coil
0603CS5N6XGL
0603CS3N6XGL
0603CS1N8XGL
0603CS1N6XGL
0603CS1N6XGL
0603CS1N6XGL
0603CS1N6XGL
--
0603CS6N8XGL
0603CS6N8XGL
0603CS6N8XGL
0603CS6N8XGL
0603CS6N8XGL
0603CS5N6XGL
0603CS5N6XGL
0
0
--
Gain
Noise Figure
OIP3
(2)
Supply
(3)
Current
Tuning
Inductor
value
Tuning
Inductor
Part No.
@
Vg
@
Vd
@
Vg
@
Vd
nH
Note :
1. Specs in brackets correspond to Inductor values shown in brackets
2. Estimated performance
3. The supply current is tunable between 10-70mA with minor variation in RF Performance
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
Page 2 of 11
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URL: www.astramtl.com
AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Electrical Specifications @ TA = 25 oC, Zo =50 Ω
Vd = +5V, Vg1=-0.3V, Vg2=+2V
Frequency Bands
Parameter
Unit
1.2-1.3
1.3-1.5
1.5-1.6
1.6-1.8
1.8-1.9
1.9-2.5
2.2-2.7
GHz
Gain
21
21
21
20.5
20.5
20.5
20
dB
Noise Figure
0.8
0.8
0.7
0.85
0.7
0.7
0.7
dB
I/P Return Loss
-10
-8
-9.5
-12
-12.5
-10
-13
dB
O/P Return Loss
-10.5
-12.5
-15.5
-20
-17.5
-12
-11.5
dB
Reverse
Isolation
-40
-40
-39.5
-38.5
-38.5
-37
-36.5
dB
P1dB
13
13
13
13
14
14
14
dBm
30
30
30
30
30
30
30
dBm
50
50
50
50
50
50
50
mA
5.6
4.3
3.6
2.2
1.8
1.6
0.9
nH
6.8
6.8
6.8
6.8
6.8
5.6
0
nH
0603CS5N6XGL,
0603CS4N3XGL,
0603CS3N6XGL,
0603CS2N2XGL,
0603CS1N8XGL,
0603CS1N6XGL,
0603CS1N6XGL
//
0603CS2N2XGL
--
0603CS6N8XGL
0603CS6N8XGL
0603CS6N8XGL
0603CS6N8XGL
0603CS6N8XGL
0603CS5N6XGL
--
--
OIP3
(1)
(2)
Supply Current
Tuning
Inductor
value
Tuning
Inductor
Part No.
@
Vg
@
Vd
@
Vg
@
Vd
Note :
1. Estimated performance
2. The supply current is tunable between 10-70mA with minor variation in RF Performance
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
Page 3 of 11
Email: info@astramtl.com
URL: www.astramtl.com
AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Measured Test Fixture data
Vd =+5V, Vg1= -0.3V, Vg2=+2V, Total Current = 50mA, TA = 25 oC
1.2-1.5 GHz Band Application
(Tuning Inductor values: @Vg1=4.3nH, @Vd= 6.8 nH)
Noise Figure
1.1
RF Performance
30
1
Gain
25
0.9
20
15
0.8
10
0
NF(dB)
5
Input RL
-5
0.7
0.6
-10
0.5
-15
-20
Output RL
-25
0.4
-30
1
1.1
1.2
1.3
1.4
1.5
1.6
Frequency (GHz)
1.7
1.8
1.9
DB(|S(2,2)|)
2122102 sim
DB(|S(1,1)|)
2122102 sim
0.3
2
NF(dB)
DB(|S(2,1)|)
2122102 sim
0.2
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9
Frequency(GHz)
3
1.3-1.6 GHz Band Application
(Tuning Inductor values: @Vg1=3.6nH, @Vd= 6.8 nH)
Noise Figure
1.1
RF Performance
30
1
Gain
25
0.9
20
15
0.8
10
0.7
0
NF(dB)
5
Input RL
-5
-10
0.6
0.5
0.4
-15
-20
0.3
Output RL
-25
0.2
-30
0.1
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
DB(|S(2,2)|)
DB(|S(1,1)|)
DB(|S(2,1)|)
Frequency (GHz)
2122102 sim
2122102 sim
2122102 sim
NF(dB)
0
1.3 1.4 1.5 1.6 1.7 1.8 1.9
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9
Frequency (GHz)
3
1.6-2.1 GHz Band Application
(Tuning Inductor values: @Vg1=2.2nH, @Vd= 6.8 nH)
Noise Figure
1
RF Performance
30
0.95
Gain
25
20
0.9
15
0.85
10
0.8
0
-5
NF(dB)
5
Input RL
-10
0.75
0.7
0.65
-15
Output RL
-20
0.6
-25
0.55
-30
1.5 1.6 1.7 1.8 1.9
2
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3
DB(|S(2,2)|)
DB(|S(1,1)|)
DB(|S(2,1)|)
Frequency (GHz)
2122102 sim
2122102 sim
2122102 sim
0.5
0.45
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
Frequency(GHz)
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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URL: www.astramtl.com
2.9
AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Measured Test Fixture data
Vd =+5V, Vg1=-0.3V, Vg2=+2V, Total Current = 50mA, TA = 25 oC
1.7-2.4 GHz Applications
(Tuning Inductor values @Vg1=1.8nH, @Vd= 6.8 nH)
Noise Figure
1.25
RF Performance
30
1.15
Gain
25
20
1.05
15
0.95
10
NF(dB)
5
0
-5
Input RL
-10
0.85
0.75
0.65
-15
-20
0.55
-25
Output RL
0.45
-30
1.6
1.7
1.8
1.9
2
2.1
Frequency (GHz)
2.2
2.3
DB(|S(2,2)|)
2122102 sim
2.4
DB(|S(1,1)|)
2122102 sim
2.5
0.35
DB(|S(2,1)|)
2122102 sim
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
Frequency(GHz)
2.5
2.6
2.7
2.8
2.9
2.5
2.6
2.7
2.8
2.9
1.8-2.5 GHz Applications
(Tuning Inductor values @Vg1=1.6nH, @Vd= 5.6 nH)
Noise Figure
1
RF Performance
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
0.95
Gain
0.9
0.85
NF (dB)
0.8
Input RL
0.75
0.7
0.65
0.6
Output RL
1.6
1.7
1.8
1.9
0.55
2
2.1
Frequency (GHz)
2.2
2.3
DB(|S(2,2)|)
2122102 sim
2.4
DB(|S(1,1)|)
2122102 sim
0.5
2.5
0.45
DB(|S(2,1)|)
2122102 sim
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
Frequency (GHz)
2.1-3 GHz Applications
(Tuning Inductor values @Vg1=0.9nH, @Vd = 0 nH)
Noise Figure
1
RF Performance
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
0.95
Gain
0.9
NF (dB)
0.85
Input RL
0.8
0.75
0.7
Output RL
0.65
0.6
2
2.1
2.2
2.3
2.4
2.5
2.6
Frequency (GHz)
2.7
2.8
2.9
DB(|S(2,2)|)
2122102 sim
DB(|S(1,1)|)
2122102 sim
3
DB(|S(2,1)|)
2122102 sim
0.55
2.2
2.3
2.4
2.5
2.6
2.7
2.8
Frequency (GHz)
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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URL: www.astramtl.com
2.9
AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Measured Test Fixture data
Vd =+5V, Vg1=-0.3V, Vg2=+2V, Total Current = 50mA, TA = 25 oC
Broad Band Performance Plots
1.8-2.5 GHz Band Application ( 1.6 & 5.6nH)
Gain
50
Gain
40
Input Return Loss
30
Input
Return Loss
25
20.9 dB @ 2GHz
-18dB @ 2GHz
20
30
15
10
Input RL (dB)
Gain (dB)
20
10
0
-10
5
0
-5
-10
-20
-15
-30
-20
DB(|S(2,1)|)
5_p3_42mAr_png
-40
DB(|S(1,1)|)
5_p3_42mAr_png
-25
-50
-30
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
4.5
5
5.5
6
Output Return Loss
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
5.5
6
Reverse Isolation
30
20
-24 dB @ 2GHz
DB(|S(1,2)|)
5_p3_42mAr_png
-38dB @ 2GHz
10
Reverse Isolation (dB)
OutPut RL (dB)
5
Reverse Isolation
Output Return Loss
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
4.5
0
-10
-20
-30
-40
-50
-60
DB(|S(2,2)|)
5_p3_42mAr_png
-70
-80
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
4.5
5
5.5
6
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
4.5
5
5.5
6
P1dB @ 2GHz : 14.7dBm
Noise Figure
Noise Figure
P1dB @ 2GHz : 14.7dBm
9
1.80 GHz
1.90 GHz
2.00 GHz
2.17 GHz
8
7
0.736 dB
0.621 dB
0.660 dB
0.594 dB
25
20
5
Gain (dB)
N F (dB )
6
4
15
10
3
2
5
1
0
0
1
1.2
1.4
1.6
1.8
2
Freq (GHz)
2.2
2.4
2.6
2.8
-30
-25
-20
-15
-10
-5
Pin (dBm)
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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URL: www.astramtl.com
0
AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Measured Test Fixture data
TA = 25 oC
Noise Figure and Gain variation with bias voltage/current
1.8-2.5 GHz Band Application
Noise Figure @ 2GHz Vs Drain Voltage
1
0.9
0.9
0.8
0.8
0.7
0.7
NF (dB)
NF (dB)
Noise Figure @ 2GHz Vs Drain Current
1
0.6
0.5
0.6
0.5
0.4
0.4
0.3
10
15
20
25
30
35
40
45
50
55
60
65
0.3
70
3
Drain Current (mA)
3.5
4
4.5
5
5.5
6
6.5
7
6.5
7
VD (Volts)
Vd =+5V, Vg1 varied from -0.5V to -0.23V,
Vg2 derived from Vd,
Vg1=-0.3V, Vg2 derived from Vd
Gain @ 2GHz Vs Drain Current
Gain @ 2GHz Vs Drain Voltage
25
25
24
20
15
Gain (dB)
Gain (dB)
23
10
22
21
20
5
19
0
18
10
15
20
25
30
35
40
45
50
55
60
65
70
3
Drain Current (mA)
Vd =+5V, Vg1 varied from -0.5V to -0.23V, Vg2
derived from Vd,
3.5
4
4.5
5
5.5
6
VD (Volts)
Vg1=-0.3V, Vg2 derived from Vd,
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Measured Test Fixture data Over Temperature
Vd =+5V, Vg1=-0.3V, Vg2=+2V, Total Current = 50mA@25 oC
Gain Vs Frequency and Temperature
24
23
22
21
Gain (dB)
20
19
18
17
16
15
Gain@ Ambient
14
Gain@+70degC
13
Gain@- 40 degC
12
2.2
2.25
2.3
2.35
Freq (GHz)
Reverse Isolation Vs Frequency and Temperature
-10
Reverse Isolation@ Ambient
Reverse Isolation@+70deg
Reverse Isolation@- 40 deg
Reverse Isolation(dB)
-15
-20
-25
-30
-35
-40
2.2
2.25
2.3
2.35
Freq (GHz)
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Measured Test Fixture data Over Temperature
Vd =+5V, Vg1=-0.3V, Vg2=+2V, Total Current = 50mA@25 oC
Input Return Loss Vs Frequency and Temperature
0
IP RetLoss@Ambient
-2
IP RetLoss@+70degC
IP RetLoss@-40degC
I/P Ret Loss (dB)
-4
-6
-8
-10
-12
-14
-16
-18
2.2
2.25
2.3
2.35
Freq (GHz)
Output Return Loss Vs Frequency and Temperature
0
OP RetLoss@Ambient
OP RetLoss@+70degC
-2.5
OP RetLoss@-40degC
O/P Ret Loss (dB)
-5
-7.5
-10
-12.5
-15
-17.5
-20
2.2
2.25
Freq (dB)
2.3
2.35
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Mechanical Characteristics
(16 Pin 3mmx 3mm x 1mm QFN Package)
Units: millimeters
Pin Description:
Pin 3
Pin 5, 6
Pin10
Pin 13, 14
Pin 15, 16
Pin 1,2,4,7,8,9,11,12
: RF in
: Gate Bias 1
: RF out
: Drain Bias
: Gate Bias2
: Ground
Application Circuit
Note :
1. Value of L1 & L2 should be
chosen as per the operating
band, as suggested under
“Electrical Specifications” .
2. The First Bypass capacitor
C1 ~ 470pF
3. R1=15K, R2=10K
4. 0.1uF should be used as 2nd
Bypass Capacitor
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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AMT2122102P
Preliminary Datasheet
Rev. 1.0 ,February, 2008
Evaluation PCB
Units: millimetres
List of Components
Component
ID
Value
Description / Part No.
C1
470 pF
Bypass capacitor / ATC Dicap 116UK471M100TT or equivalent
C2
0.1 uF
R1
15K Ohm
Resistor in VG2 Bias network (0402 Pkg.)
R2
10K Ohm
Resistor in VG2 Bias network (0402 Pkg.)
L1 & L2
As per the Table
“Electrical
Specifications”
Freq. Band Tuning Inductors, 0603 Pkg. or Gold Coil
2
nd
Bypass Capacitor (0402 Pkg.)
Board Material : RT/ Duroid 5880
Note:
1.
2.
3.
4.
5.
Input and Output Lines should be of 50Ω I mpedance.
Sufficient numbers of via holes should be provided for good grounding.
1st bypass of 470 pF should be present immediately after the chip inductors.
Vg2 can be applied independently without using R1 & R2.
Gold Coils can be used instead of chip inductors, with values as per the table.
6. Two 1-mil (0.0254mm) bond wires of minimum length should be used for RF input and
Output.
7. Evaluation PCB is available from AMTL upon request.
GaAs MMIC devices are susceptible to Electrostatic discharge.
Proper precautions should be observed during handling,
assembly & testing
All information and Specifications are subject to change without prior notice
Astra Microwave Products Limited, Hyderabad, INDIA
Phone: +91-40-30618000
Fax: +91-40-30618048
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