108537-HMC498LC4 [ADI]
BOARD EVAL HMC498LC4;
ADI 
HMC498LC4
v05.0418
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
Typical Applications
Features
The HMC498LC4 is ideal for use as a LNA or Driver
amplifier for:
Output IP3: +36 dBm
Saturated Power: +26 dBm @ 23% PAE
Gain: 22 dB
• Point-to-Point Radios
• Point-to-Multi-Point Radios & VSAT
• Test Equipment & Sensors
• Military End-Use
+5V @ 250 mA Supply
50 Ohm Matched Input/Output
RoHS Compliant 4x4 mm SMT Package
Functional Diagram
General Description
The HMC498LC4 is a high dynamic range GaAs
PHEMT MMIC Medium Power Amplifier housed in a
leadless “Pb free” SMT package. Operating from 17
to 24 GHz, the amplifier provides 22 dB of gain, +26
dBm of saturated power and 23% PAE from a +5V
supply voltage. Noise figure is 4 dB while output IP3 is
+36 dBm typical enabling the HMC498LC4 to function
as a low noise front end as well as a driver amplifier.
The RF I/Os are DC blocked and matched to 50 Ohms
for ease of use. The HMC498LC4 eliminates the
need for wire bonding, allowing use of surface mount
manufacturing techniques.
Electrical Specifications, TA = +25° C, Vdd1, 2, 3 = 5V, Idd = 250 mA*
Parameter
Min.
Typ.
17 - 19
22
Max.
Min.
Typ.
19 - 23
22.5
0.02
13
Max.
Min.
Typ.
23 - 24
21
Max.
0.03
Units
GHz
dB
Frequency Range
Gain
18
20
18
Gain Variation Over Temperature
Input Return Loss
0.02
13
0.03
0.03
0.02
10
dB/ °C
dB
Output Return Loss
15
15
20
dB
Output Power for 1 dB Compression (P1dB)
Saturated Output Power (Psat)
Output Third Order Intercept (IP3)
Noise Figure
22
25
21.5
24.5
25.5
36
22.5
25.5
26.5
35.5
4.5
dBm
dBm
dBm
dB
26.5
35
4.0
4.0
Supply Current (Idd)(Vdd = +5V, Vgg = -0.8V
Typ.)
250
250
250
mA
* Adjust Vgg between -2 to 0V to achieve Idd = 250 mA typical.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
1
HMC498LC4
v05.0418
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
Broadband Gain & Return Loss
25
Gain vs. Temperature
26
15
22
S21
S11
S22
5
-5
18
+25 C
+85 C
-40 C
14
-15
-25
10
12
14
16
18
20
22
24
26
28
16
17
18
19
20
21
22
23
24
25
FREQUENCY (GHz)
FREQUENCY (GHz)
Input Return Loss vs. Temperature
Output Return Loss vs. Temperature
0
0
-5
+25 C
+85 C
-40 C
-5
-10
-15
-20
+25 C
+85 C
-40 C
-10
-15
-20
-25
16
17
18
19
20
21
22
23
24
25
16
17
18
19
20
21
22
23
24
25
FREQUENCY (GHz)
FREQUENCY (GHz)
P1dB vs. Temperature
30
Psat vs. Temperature
30
26
22
18
14
10
26
22
18
14
10
+25 C
+85 C
-40 C
+25 C
+85 C
-40 C
16
17
18
19
20
21
22
23
24
25
16
17
18
19
20
21
22
23
24
25
FREQUENCY (GHz)
FREQUENCY (GHz)
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
2
Application Support: Phone: 1-800-ANALOG-D
HMC498LC4
v05.0418
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
Output IP3 vs. Temperature
40
Noise Figure vs. Temperature
10
9
+25 C
36
32
+85 C
-40 C
8
7
6
5
4
3
2
1
0
+25 C
+85 C
-40 C
28
24
20
16
17
18
19
20
21
22
23
24
25
16
17
18
19
20
21
22
23
24
25
FREQUENCY (GHz)
FREQUENCY (GHz)
Gain, Power & OIP3
vs. Supply Voltage @ 23 GHz
Reverse Isolation vs. Temperature
0
-10
36
-20
+25 C
+85 C
-40 C
32
Gain
P1dB
Psat
IP3
-30
28
-40
-50
-60
-70
24
20
4.5
5
5.5
16
17
18
19
20
21
22
23
24
25
Vdd Supply Voltage (Vdc)
FREQUENCY (GHz)
Power Compression @ 18 GHz
30
Power Compression @ 23 GHz
30
25
20
15
10
5
25
20
15
10
5
Pout (dBm)
Gain (dB)
PAE (%)
Pout (dBm)
Gain (dB)
PAE (%)
0
0
-10
-8
-6
-4
-2
0
2
4
6
8
10
-10
-8
-6
-4
-2
0
2
4
6
8
10
INPUT POWER (dBm)
INPUT POWER (dBm)
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
3
Application Support: Phone: 1-800-ANALOG-D
HMC498LC4
v05.0418
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
Typical Supply Current vs. Vdd
Absolute Maximum Ratings
Drain Bias Voltage (Vdd1, Vdd2, Vdd3)
+5.5 Vdc
Vdd (Vdc)
Idd (mA)
Gate Bias Voltage (Vgg)
-4.0 to 0 Vdc
+10 dBm
175 °C
+4.5
239
RF Input Power (RFIN)(Vdd = +5Vdc)
Channel Temperature
+5.0
250
+5.5
262
Continuous Pdiss (T= 85 °C)
(derate 18 mW/°C above 85 °C)
1.62 W
Note: Amplifier will operate over full voltage ranges shown
above. Vgg adjusted to achieve Idd= 250 mA at +5V.
Thermal Resistance
(channel to ground paddle)
55.6 °C/W
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
-65 to +150 °C
-40 to +85 °C
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
4.05
3.90 SQ
3.75
0.36
0.30
0.24
PIN 1
PIN 1
INDICATOR
0.08
BSC
24
19
18
1
0.50
BSC
2.60
2.50 SQ
2.40
EXPOSED
PAD
13
6
12
7
BOTTOM VIEW
2.50 REF
0.32
BSC
TOP VIEW
SIDE VIEW
1.00
0.90
0.80
3.10 BSC
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
SEATING
PLANE
SECTION OF THIS DATA SHEET.
24-Terminal Ceramic Leadless Chip Carrier [LCC]
(E-24-1)
Dimensions shown in millimeters.
Package Information
Part Number
Package Body Material
Alumina, White
Lead Finish
MSL Rating
MSL3 [1]
Package Marking [2]
H498
XXXX
HMC498LC4
Gold over Nickel
[1] Max peak reflow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
4
Application Support: Phone: 1-800-ANALOG-D
HMC498LC4
v05.0418
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
Pin Descriptions
Pin Number
Function
Description
Interface Schematic
These pins are not connected internally; however, all data
shown herein was measured with these pins connected to
RF/DC ground externally.
1, 5 - 8, 10 - 14,
18, 20, 22, 24
N/C
GND
RFIN
Package bottom has an exposed metal paddle that must
also be connected to RF/DC ground.
2, 4, 15, 17
This pin is AC coupled
and matched to 50 Ohms.
3
Gate control for amplifier. Adjust to achieve Id of 250 mA.
Please follow “MMIC Amplifier Biasing Procedure”
Application Note. External bypass capacitors of 100 pF,
1000 pF and 2.2 µF are required.
9
Vgg
This pin is AC coupled
and matched to 50 Ohms.
16
RFOUT
Power Supply Voltage for the amplifier. External bypass
capacitors of 100 pF, 1000pF, and 2.2 µF are required.
23, 21, 19
Vdd1, Vdd2, Vdd3
Application Circuit
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
5
Application Support: Phone: 1-800-ANALOG-D
HMC498LC4
v05.0418
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
Evaluation PCB
List of Materials for Evaluation PCB 108537 [1]
The circuit board used in this 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 Analog Devices, upon request.
Item
J1, J2
Description
2.92 mm PC mount K-connector
DC Pin
J3 - J8
C1 - C4
C5 - C8
C9 - C12
U1
100 pF capacitor, 0402 pkg.
1,000 pF Capacitor, 0603 pkg.
2.2µF Capacitor, Tantalum
HMC498LC4 Amplifier
[2]
PCB
108535 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350.
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
6
Application Support: Phone: 1-800-ANALOG-D
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