v00.0503
MICROWAVE CORPORATION
HMC491LP3
GaAs MMIC LOW NOISE AMPLIFIER
w/ BYPASS MODE, 3.4 - 3.8 GHz
Features
Gain: 16 dB
Noise Figure: 2.0 dB
Single Supply: +3.0 V @ 9 mA
Integrated Bypass Mode
50 Ohm Matched Input/Output
3 x 3 x 1 mm QFN SMT Package
8
AMPLIFIERS - SMT
Typical Applications
The HMC491LP3 is ideal for:
• Wireless Local Loop (WLL)
• Fixed Wireless Access
• Microwave & VSAT Radios
Functional Diagram
General Description
The HMC491LP3 is a versatile, integrated, Low
Noise Amplifier (LNA) featuring a bypass mode
intended for 3.4 to 3.8 GHz Fixed Wireless &
WLL applications. The amplifier provides 16 dB
of gain, 2 dB noise figure and +3 dBm input IP3
while requiring only 9 mA from a +3V supply.
Using a single control line, the LNA can be
switched into a low loss 2.2 dB bypass mode
reducing the current consumption to 20 µA. A
low cost, leadless 3x3 mm QFN surface mount
package (LP3) houses the amplifier. No external
RF matching components are required.
Electrical Specifications,
T
A
= +25° C, Vdd = +3V
LNA Mode
Parameter
Min.
Frequency Range
Gain
Gain Variation Over Temperature
Noise Figure
Input Return Loss
Output Return Loss
Reverse Isolation
Input or Output Power for 1dB Compression (P1dB)*
Input Third Order Intercept (IP3)
(-20 dBm Input Power per tone, 1 MHz tone spacing)
Supply Current (Idd)
3
14.5
Typ.
3.4 - 3.6
17
0.012
2.2
12
9
34
6
1
9
4
0.02
2.7
13
Max.
Min.
Typ.
3.6 - 3.8
15.5
0.012
2.0
17
7
33
7
3
9
25
0.02
2.5
-2.8
Max.
Min.
Typ.
3.4 - 3.8
-2.3
0.004
--
18
11
--
28
11
0.03
0.008
--
Max.
MHz
dB
dB / °C
dB
dB
dB
dB
dBm
dBm
mA
LNA Mode
Bypass Mode
Units
* P1dB for LNA Mode is referenced to RFOUT while P1dB for Bypass Mode is referenced to RFIN.
8 - 260
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
v00.0503
MICROWAVE CORPORATION
HMC491LP3
GaAs MMIC LOW NOISE AMPLIFIER
w/ BYPASS MODE, 3.4 - 3.8 GHz
LNA Mode
Broadband Gain & Return Loss
20
15
10
RESPONSE (dB)
5
0
-5
-10
-15
-20
-25
2.8
S21
LNA Mode
Gain vs. Temperature
20
19
18
17
GAIN (dB)
16
15
14
13
12
11
+25 C
+85 C
-40 C
8
3
3.2
3.4
3.6
3.8
4
10
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
FREQUENCY (GHz)
LNA Mode
Input Return Loss vs. Temperature
0
+25 C
+85 C
LNA Mode
Output Return Loss vs. Temperature
0
+25 C
+85 C
-40 C
-3
RETURN LOSS (dB)
RETURN LOSS (dB)
-5
-40 C
-6
-10
-9
-15
-12
-20
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
-15
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
LNA Mode
Noise Figure vs. Temperature
5
4.5
4
NOISE FIGURE (dB)
3.5
3
2.5
2
1.5
1
0.5
0
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
+25 C
+85 C
-40 C
LNA Mode
Reverse Isolation vs. Temperature
0
-5
-10
ISOLATION (dB)
-15
-20
-25
-30
-35
-40
3.4
+25 C
+85 C
-40 C
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
8 - 26
AMPLIFIERS - SMT
S11
S22
MICROWAVE CORPORATION
v00.0503
HMC491LP3
GaAs MMIC LOW NOISE AMPLIFIER
w/ BYPASS MODE, 3.4 - 3.8 GHz
8
AMPLIFIERS - SMT
LNA Mode
Output P1dB vs. Temperature
12
11
10
OUTPUT P1dB (dBm)
9
7
6
5
4
3
2
1
0
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
+25 C
+85 C
-40 C
LNA Mode
Psat vs. Temperature
12
11
10
9
Psat (dBm)
8
7
6
5
4
3
2
1
0
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
+25 C
+85 C
-40 C
8
LNA Mode
Input IP3 vs. Temperature
6
5
4
3
IIP3 (dBm)
LNA Mode Gain, Noise Figure & Supply
Current vs. Supply Voltage @ 3.6 GHz
22
Noise Figure
Gain
12
11
10
9
8
7
6
5
4
3
2
1
0
3
Vdd (Vdc)
3.3
NOISE FIGURE (dB), Idd (mA)
20
18
GAIN (dB)
16
14
+25 C
+85 C
-40 C
Idd
2
1
0
-1
-2
-3
-4
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
12
10
3.8
2.7
8 - 262
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
v00.0503
HMC491LP3
GaAs MMIC LOW NOISE AMPLIFIER
w/ BYPASS MODE, 3.4 - 3.8 GHz
Bypass Mode
Broadband Insertion Loss & Return Loss
0
Bypass Mode
Insertion Loss vs. Temperature
0
-0.5
INSERTION LOSS (dB)
8
-5
RESPONSE (dB)
-1
-1.5
-2
-2.5
-3
-3.5
-4
-4.5
+25 C
+85 C
-40 C
-10
-15
S21
S11
S22
-20
-25
2.8
3
3.2
3.4
3.6
3.8
4
-5
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
FREQUENCY (GHz)
Bypass Mode
Input Return Loss vs. Temperature
0
+25 C
Bypass Mode
Output Return Loss vs. Temperature
0
+25 C
-5
RETURN LOSS (dB)
+85 C
-40 C
-3
RETURN LOSS (dB)
+85 C
-40 C
-10
-6
-15
-9
-20
-12
-25
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
-15
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
3.8
Bypass Mode
Input IP3 vs. Temperature
20
18
16
14
IIP3 (dBm)
12
10
8
6
4
2
0
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
+25 C
+85 C
-40 C
Bypass Mode
Input P1dB vs. Temperature
30
29
28
INPUT P1dB (dBm)
27
26
25
24
23
22
21
3.8
20
3.4
3.5
3.6
FREQUENCY (GHz)
3.7
+25 C
+85 C
-40 C
3.8
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
8 - 26
AMPLIFIERS - SMT
MICROWAVE CORPORATION
v00.0503
HMC491LP3
GaAs MMIC LOW NOISE AMPLIFIER
w/ BYPASS MODE, 3.4 - 3.8 GHz
8
AMPLIFIERS - SMT
Absolute Maximum Ratings
Drain Bias Voltage (Vdd)
RF Input Power (RFin)
(Vdd = +3.0 Vdc)
Channel Temperature
Continuous Pdiss (T = 85 °C)
(derate 1.8 mW/°C above 85 °C)
Thermal Resistance
(channel to ground paddle)
Storage Temperature
Operating Temperature
+7.0 Vdc
LNA Mode 0 dBm
Bypass Mode +30 dBm
150 °C
Typical Supply Current vs. Vdd
Vdd (Vdc)
+2.7
+3.0
+3.3
Idd (mA)
7.6
9.0
10.2
0.117 W
Truth Table
556 °C/W
-65 to +150 °C
-40 to +85 °C
LNA Mode
Bypass Mode
Vctl= Vdd @ 1.6 mA
Vctl= 0Vdc @ -13 µA
Vdd= +3V ±10%
Outline Drawing
NOTES:
1. MATERIAL PACKAGE BODY: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY
3. LEAD AND GROUND PADDLE PLATING: Sn/Pb SOLDER
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
6. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
7. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
8. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
8 - 264
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
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