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For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
1
HMC751LC4
v01.0514
SMT PHEMT LOW NOISE
AMPLIFIER, 17 - 27 GHz
General Description
Features
Functional Diagram
The HMC751LC4 is a high dynamic range GaAs
pHEMT MMIC Low Noise Amplier (LNA) housed in
a leadless “Pb free” RoHS compliant SMT package.
The HMC751LC4 provides 25 dB of small signal
gain, 2.2 dB of noise gure and output IP3 of +25 dBm.
The P1dB output power of +13 dBm also enables the
LNA to function as a LO driver for balanced, I/Q or
image reject mixers. The HMC751LC4 allows the use
of surface mount manufacturing techniques.
Noise Figure: 2.2 dB
Gain: 25 dB
OIP3: +25 dBm
Single Supply: +4V @ 73 mA
50 Ohm Matched Input/Output
RoHS Compliant 4 x 4 mm Package
Electrical Specications, TA = +25° C, Vdd 1, 2, 3 = +4V
Typical Applications
The HMC751LC4 is ideal for:
• Point-to-Point Radios
• Point-to-Multi-Point Radios & VSAT
• Test Equipment and Sensors
• Military
Parameter Min. Typ. Max. Min. Ty p. Max. Units
Frequency Range 17 - 20 20 - 27 GHz
Gain 22 24 23 25 dB
Gain Variation Over Temperature 0.025 0.028 dB/ °C
Noise Figure 2.2 2.8 2.0 2.6 dB
Input Return Loss 17 15 dB
Output Return Loss 16 15 dB
Output Power for 1 dB Compression (P1dB) 13 13 dBm
Saturated Output Power (Psat) 15 15 dBm
Output Third Order Intercept (IP3) 25 25 dBm
Supply Current (Idd)(Vdd = +4V) 50 73 90 50 73 90 mA
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
2
HMC751LC4
v01.0514
SMT PHEMT LOW NOISE
AMPLIFIER, 17 - 27 GHz
Input Return Loss vs. Temperature Output Return Loss vs. Temperature
Gain vs. Temperature Gain vs. Supply Voltage
Noise Figure vs. Temperature Output IP3 vs. Temperature
14
16
18
20
22
24
26
28
30
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
GAIN (dB)
FREQUENCY (GHz)
14
16
18
20
22
24
26
28
30
14 16 18 20 22 24 26 28 30
4.5 V
4.0 V
3.5 V
GAIN (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
RETURN LOSS (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
RETURN LOSS (dB)
FREQUENCY (GHz)
0
2
4
6
8
10
14 16 18 20 22 24 26 28 30
+25 C
+85 C
-40 C
NOISE FIGURE (dB)
FREQUENCY (GHz)
14
16
18
20
22
24
26
28
30
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
IP3 (dBm)
FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
3
HMC751LC4
v01.0514
SMT PHEMT LOW NOISE
AMPLIFIER, 17 - 27 GHz
P1dB vs. Temperature
Power Compression @ 21 GHz
Reverse Isolation vs. Temperature
P1dB vs. Supply Voltage
Psat vs. Temperature
4
6
8
10
12
14
16
18
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
P1dB (dBm)
FREQUENCY (GHz)
4
6
8
10
12
14
16
18
14 16 18 20 22 24 26 28 30
3.5 V
4.0 V
4.5 V
GAIN (dB)
FREQUENCY (GHz)
4
6
8
10
12
14
16
18
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
Psat (dBm)
FREQUENCY (GHz)
-70
-60
-50
-40
-30
-20
-10
0
14 16 18 20 22 24 26 28 30
+25 C
+85 C
- 40 C
ISOLATION (dB)
FREQUENCY (GHz)
0
5
10
15
20
25
30
-25 -20 -15 -10 -5
Pout
Gain
PAE
Pout (dBm), GAIN (dB), PAE (%)
INPUT POWER (dBm)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
4
HMC751LC4
v01.0514
SMT PHEMT LOW NOISE
AMPLIFIER, 17 - 27 GHz
Outline Drawing
Absolute Maximum Ratings
Drain Bias Voltage (Vdd1, Vdd2, Vdd3) +5.5 Vdc
RF Input Power (RFIN)(Vdd = +4 Vdc) -5 dBm
Channel Temperature 175 °C
Continuous Pdiss (T= 85 °C)
(derate 11.2 mW/°C above 85 °C) 1 W
Thermal Resistance
(channel to ground paddle) 89 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
Vdd (Vdc) Idd (mA)
+3.5 69
+4.0 73
+4.5 77
Typical Supply Current vs. Vdd
Note: Amplier will operate over full voltage range shown
above.
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING: 30-80 MICROINCHES
GOLD OVER 50 MICROINCHES MINIMUM NICKEL
3. DIMENSIONS ARE IN INCHES [MILLIMETERS]
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking [2]
HMC751LC4 Alumina, White Gold over Nickel MSL3 [1] H751
XXXX
[1] Max peak reow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
5
HMC751LC4
v01.0514
SMT PHEMT LOW NOISE
AMPLIFIER, 17 - 27 GHz
Pin Descriptions
Pin Number Function Description Interface Schematic
1, 3, 5 - 7, 12 - 14,
16, 18, 19, 24 GND These pins and package bottom must be
connected to RF/DC ground.
2, 8 - 11,
17, 23 N/C This pin may be connected to RF/DC ground.
Performance will not be affected.
4RFIN This pin is AC coupled
and matched to 50 Ohms.
15 RFOUT This pin is AC coupled
and matched to 50 Ohms.
22, 21, 20 Vdd1, 2, 3 Power Supply Voltage for the amplier. External bypass
capacitors of 100 pF, 1,000 pF and 2.2 µF are required.
Application Circuit
Component Value
C1, C2, C3 100 pF
C4, C5, C6 1,000 pF
C7, C8, C9 2.2 µF
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
6
HMC751LC4
v01.0514
SMT PHEMT LOW NOISE
AMPLIFIER, 17 - 27 GHz
Evaluation PCB
List of Materials for Evaluation PCB 123815 [1]
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 board should be mounted to an appro-
priate heat sink. The evaluation circuit board shown
is available from Hittite upon request.
Item Description
J1 - J2 PCB Mount K Connector
J3 - J6 DC Pin
C1 - C3 100 pF Capacitor, 0402 Pkg.
C4 - C6 1,000 pF Capacitor, 0603 Pkg.
C7 - C9 2.2 µF Capacitor, Tantalum
U1 HMC751LC4 Amplier
PCB [2] 123813 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350 or Arlon 25FR
