For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
7
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HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
General Description
Features
Functional Diagram
The HMC373LP3 / HMC373LP3E are versatile, high
dynamic range GaAs MMIC Low Noise Ampli ers
that integrates a low loss LNA bypass mode on the
IC. The ampli er is ideal for GSM & CDMA cellular
basestation front-end receivers operating between
700 and 1000 MHz and provides 0.9 dB noise  gure,
14 dB of gain and +35 dBm IP3 from a single supply of
+5V @ 90 mA. Input and output return losses are 28
and 12 dB respectively with the LNA requiring minimal
external components to optimize the RF input match,
RF ground and DC bias. By presenting an open or
short circuit to a single control line, the LNA can be
switched into a low 2.0 dB loss bypass mode reducing
the current consumption to 10 μA. For applications
which require improved noise  gure, please see the
HMC668LP3(E).
Noise Figure: 0.9 dB
Output IP3: +35 dBm
Gain: 14 dB
Low Loss LNA Bypass Path
Single Supply: +5V @ 90 mA
50 Ohm Matched Output
Electrical Speci cations, TA = +25° C, Vdd = +5V
Typical Applications
The HMC373LP3 / HMC373LP3E is ideal for
basestation receivers:
• GSM, GPRS & EDGE
• CDMA & W-CDMA
• Private Land Mobile Radio
Parameter LNA Mode LNA Mode Bypass Mode Units
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
Frequency Range 810 - 960 700 - 1000 700 - 1000 MHz
Gain 11.5 13.5 10.5 14 -2.8 -2.0 dB
Gain Variation Over Temperature 0.008 0.015 0.008 0.015 0.002 0.004 dB / °C
Noise Figure 0.9 1.3 1.0 1.4 dB
Input Return Loss 28 25 30 dB
Output Return Loss 12 11 25 dB
Reverse Isolation 20 19 dB
Power for 1dB Compression (P1dB)* 18 21 17 20 30 dBm
Saturated Output Power (Psat) 22.5 22 dBm
Third Order Intercept (IP3)*
(-20 dBm Input Power per tone, 1 MHz tone spacing) 35.5 35 50 dBm
Supply Current (Idd) 90 90 0.01 mA
* P1dB and IP3 for LNA Mode are referenced to RFOUT while P1dB and IP3 for Bypass Mode are referenced to RFIN.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
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LNA Broadband Gain & Return Loss
LNA Gain vs. Temperature LNA Noise Figure vs. Temperature
-40
-30
-20
-10
0
10
20
0.25 0.5 0.75 1 1.25 1.5 1.75 2
S21
S11
S22
RESPONSE (dB)
FREQUENCY (GHz)
10
12
14
16
18
20
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
GAIN (dB)
FREQUENCY (GHz)
0.5
0.7
0.9
1.1
1.3
1.5
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
NOISE FIGURE (dB)
FREQUENCY (GHz)
LNA – Gain, Noise Figure &
Power vs. Supply Voltage @ 850 MHz
12
14
16
18
20
22
0.2
0.4
0.6
0.8
1
1.2
4.5 4.75 5 5.25 5.5
Gain
P1dB Noise Figure
GAIN (dB), P1dB (dBm)
NOISE FIGURE (dB)
Vdd (Vdc)
LNA Gain vs. Vdd LNA Noise Figure vs. Vdd
10
12
14
16
18
20
0.7 0.75 0.8 0.85 0.9 0.95 1
+4.5 V
+5.0 V
+5.5 V
GAIN (dB)
FREQUENCY (GHz)
0.5
0.7
0.9
1.1
1.3
1.5
0.7 0.75 0.8 0.85 0.9 0.95 1
+4.5 V
+5.0 V
+5.5 V
NOISE FIGURE (dB)
FREQUENCY (GHz)
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
7
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LNA Output IP3 vs. Temperature LNA P1dB & Psat vs. Temperature
LNA Output IP3 vs. Vdd LNA P1dB vs. Vdd
LNA Input Return Loss vs. Temperature LNA Output Return Loss vs. Temperature
-40
-35
-30
-25
-20
-15
-10
-5
0
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
RETURN LOSS (dB)
FREQUENCY (GHz)
-20
-16
-12
-8
-4
0
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
RETURN LOSS (dB)
FREQUENCY (GHz)
30
32
34
36
38
40
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
IP3 (dBm)
FREQUENCY (GHz)
30
32
34
36
38
40
0.7 0.75 0.8 0.85 0.9 0.95 1
+4.5 V
+5.0 V
+5.5 V
IP3 (dBm)
FREQUENCY (GHz)
15
17
19
21
23
25
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
COMPRESSION POINT (dBm)
FREQUENCY (GHz)
P1dB
Psat
15
17
19
21
23
25
0.7 0.75 0.8 0.85 0.9 0.95 1
+4.5 V
+5.0 V
+5.5 V
P1dB (dBm)
FREQUENCY (GHz)
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
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Bypass Mode
Insertion Loss vs. Temperature
Bypass Mode
Input Return Loss vs. Temperature
Bypass Mode
Output Return Loss vs. Temperature
Bypass Mode
Input IP3 vs. Temperature
Bypass Mode
Broadband Insertion Loss & Return Loss
LNA Reverse Isolation vs. Temperature
-30
-25
-20
-15
-10
-5
0
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
ISOLATION (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0.25 0.5 0.75 1 1.25 1.5 1.75 2
S21
S11
S22
RESPONSE (dB)
FREQUENCY (GHz)
-5
-4
-3
-2
-1
0
0.7 0.75 0.8 0.85 0.9 0.95 1
INSERTION LOSS (dB)
FREQUENCY (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
RETURN LOSS (dB)
FREQUENCY (GHz)
-50
-40
-30
-20
-10
0
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
RETURN LOSS (dB)
FREQUENCY (GHz)
35
40
45
50
55
0.7 0.75 0.8 0.85 0.9 0.95 1
+25 C
+85 C
-40 C
INPUT IP3 (dBm)
FREQUENCY (GHz)
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
7
7 - 64
Typical Supply Current vs. Vdd
Vdd (Vdc) Idd (mA)
+4.5 87
+5.0 90
+5.5 93
Drain Bias Voltage (Vdd) +8.0 Vdc
RF Input Power (RFIN)
(Vdd = +5.0 Vdc)
LNA Mode
Bypass Mode
+15 dBm
+30 dBm
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 13.5 mW/°C above 85 °C) 0.878 W
Thermal Resistance
(channel to ground paddle) 74.1 °C/ W
Storage Temperature -65 to +150° C
Operating Temperature -40 to +85° C
Absolute Maximum Ratings
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED LAND PATTERN.
LNA Mode Vctl= Short Circuit to DC Ground
Bypass Mode Vctl= Open Circuit
Truth Table
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC373LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 373
XXXX
HMC373LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 373
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
7
7 - 65
Pin Descriptions
Pin Number Function Description Interface Schematic
1, 3, 5, 8, 10,
12, 13, 15, 16 N/C No connection necessary.
These pins may be connected to RF/DC ground.
2RFIN
This pin is matched to 50 Ohms with a 19 nH inductor to
ground. See Application Circuit.
4Vctl
DC ground return. LNA is in high gain mode when a short
circuit is introduced to this pin through an external switch.
LNA is in bypass mode when open circuit is introduced
6ACG
An external capacitor of 0.01μF to ground is required
for low frequency bypassing.
See Application Circuit for further details.
7, 14 GND These pins must be connected to RF/DC ground.
9Vdd
Power supply voltage. Choke inductor and bypass capacitor
are required. See application circuit.
11 RFOUT This pin is AC coupled and matched to 50 Ohms.
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
7
7 - 66
Item Description
J1 - J2 PCB Mount SMA RF Connector
J3 - J4 DC Pin
J5 2 Pos DIP Switch
C1 10000 pF Capacitor, 0402 Pkg.
C2 10000 pF Capacitor, 0603 Pkg.
C3 1000 pF Capacitor, 0402 Pkg.
L1 19 nH Inductor, 0402 Pkg.
L2 18 nH Inductor, 0603 Pkg.
R1 2 Ohm Resistor, 0402 Pkg.
U1 HMC373LP3 / HMC373LP3E Ampli er
PCB [2] 107177 Evaluation Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
Evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown.
A sufficient number of via holes should be used to
connect the top and bottom ground planes. The
evaluation circuit board shown is available from
Hittite upon request.
List of Materials for Evaluation PCB 107220 [1]
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AMPLIFIERS - LOW NOISE - SMT
7
7 - 67
Application Circuit
Note 1: Choose value of capacitor C1 for low frequency bypassing. A 0.01 μF ±10% capacitor is recommended.
Note 2: Pin 4 (Vctl) is the DC ground return for the circuit. The LNA is in the high gain mode when a short circuit is introduced to this
pin through an external switch. The LNA is in bypass mode when an open circuit is introduced. For the data presented, switching is
done through a two position DIP switch (J5) in series with a 2 Ohm resistor (to account for the Ron of an electrical switch).
Note 3: L1, L2 and C1 should be located as close to pins as possible.
Evaluation Board Circuit
HMC373LP3 / 373LP3E
GaAs PHEMT MMIC LOW NOISE
AMPLIFIER w/ BYPASS MODE, 700 - 1000 MHz
v03.0610