For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOW NOISE AMPLIFIERS - SMT
8
8 - 20
HMC320MS8G / 320MS8GE
GaAs MMIC LOW NOISE
AMPLIFIER , 5 - 6 GHz
v03.0308
General Description
Features
Functional Diagram
The HMC320MS8G & HMC320MS8GE are low cost
C-band xed gain Low Noise Ampli ers (LNA). The
HMC320MS8G & HMC320MS8GE operate using a
single positive supply that can be set between +3V
and +5V. With +3V bias, the LNA provides a noise
gure of 2.5 dB, 1 dB gain and better than 10 dB
return loss across the UNII band. The HMC320MS8G
& HMC320MS8GE also feature an adaptive baising
that allows the user to select the optimal P1dB
performance for their system using an external set
resistor on the “RES” pin. P1dB performance can
be set between a range of +1 dBm to +13 dBm. The
low cost LNA uses an 8-leaded MSOP ground base
surface mount plastic package, which occupies less
than 14.8 mm2.
Selectable Functionality:
LNA, Driver, or LO Buffer Amp
Adjustable Input IP3 Up to +10 dBm
+3V Operation
Ultra Small 8 Lead MSOP: 14.8 x 14.8 x 1 mm
Electrical Speci cations, TA = +25° C, Vdd = +3V
Typical Applications
The HMC320MS8G(E) is ideal for:
• UNII
• HiperLAN
* RBIAS resistor value sets current. See adaptive biasing application note.
Parameter
Low Power*
(VSET = 0V, Idd = 7 mA)
Medium Power*
(VSET = 3V, Idd = 25 mA)
High Power*
(VSET = 3V, Idd = 40 mA) Units
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
Frequency Range 5 - 6 5 - 6 5 - 6 GHz
Gain 8 10 16 8 12 16 9 13 16 dB
Gain Variation over Temperature 0.025 0.035 0.025 0.035 0.025 0.035 dB/°C
Gain Flatness ±0.5 ±1.0 ±1.5 dB
Noise Figure 2.7 3.8 2.5 3.8 2.6 3.8 dB
Input Return Loss 4 10 4 10 4 10 dB
Output Return Loss 7 13 10 18 10 20 dB
Output Power for 1 dB Compression (P1dB) -4 -1 6 9 9 12 dBm
Input Third Order Intercept Point (IIP3) -3 1 4 8 6 10 dBm
Supply Current (Idd) 7 25 40 mA
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOW NOISE AMPLIFIERS - SMT
8
8 - 21
Broadband Gain & Return Loss
Medium Power Bias
Gain vs. Temperature
Medium Power Bias
Input Return Loss
@ Three Bias Conditions
Gain @ Three Bias Conditions
Noise Figure vs. Temperature
Medium Power Bias
Output Return Loss
@ Three Bias Conditions
-30
-25
-20
-15
-10
-5
0
5
10
15
3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8
S11
S21
S22
RESPONSE (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
4 4.5 5 5.5 6 6.5 7
Low Power Bias
Medium Power Bias
High Power Bias
RETURN LOSS (dB)
FREQUENCY
(
GHz
)
0
2
4
6
8
10
12
14
16
4 4.5 5 5.5 6 6.5 7
+25 C
+85 C
-40 C
GAIN (dB)
FREQUENCY
(
GHz
)
-30
-25
-20
-15
-10
-5
0
4 4.5 5 5.5 6 6.5 7
Low Power Bias
Medium Power Bias
High Power Bias
RETURN LOSS (dB)
FREQUENCY
(
GHz
)
0
1
2
3
4
5
4.5 5 5.5 6 6.5
+25 C
+85 C
-40 C
NOISE FIGURE (dB)
FREQUENCY
(
GHz
)
0
2
4
6
8
10
12
14
16
4 4.5 5 5.5 6 6.5 7
Low Power Bias
Medium Power Bias
High Power Bias
GAIN (dB)
FREQUENCY
(
GHz
)
HMC320MS8G / 320MS8GE
GaAs MMIC LOW NOISE
AMPLIFIER , 5 - 6 GHz
v03.0308
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOW NOISE AMPLIFIERS - SMT
8
8 - 22
Noise Figure
@ Three Bias Conditions Input IP3 @ Three Bias Conditions
Output 1dB Compression
@ Three Bias Conditions
Reverse Isolation
@ Three Bias Conditions
0
1
2
3
4
5
4.5 5 5.5 6 6.5
Low Power Bias
Medium Power Bias
High Power Bias
NOISE FIGURE (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
4 4.5 5 5.5 6 6.5 7
Low Power Bias
Medium Power Bias
High Power Bias
REVERSE ISOLATION (dB)
FREQUENCY (GHz)
-5
-3
-1
1
3
5
7
9
11
13
15
4.5 5 5.5 6 6.5
Low Power Bias
Medium Power Bias
High Power Bias
P1dB (dBm)
FREQUENCY (GHz)
-5
0
5
10
15
4.5 5 5.5 6 6.5
Low Power Bias
Medium Power Bias
High Power Bias
IP3 (dBm)
FREQUENCY (GHz)
HMC320MS8G / 320MS8GE
GaAs MMIC LOW NOISE
AMPLIFIER , 5 - 6 GHz
v03.0308
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOW NOISE AMPLIFIERS - SMT
8
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Adaptive Biasing
Applying the adaptive biasing
A dynamically controlled bias can be implemented with this design. A typical application wil include sens-
ing an RF signal level and then adjusting the VSET. The bias adjustment can be accomplished by either
analog or digitals means, after the RF signal has been detected and translated to a DC voltage using
external power detection circuitry.
Optimizing P1dB Performance
The bias level may be changed to adjust the P1dB and return loss performance. The table below contains the HMC-
320MS8G RF performance as a function of various VSET and RBIAS settings. It will be necessary for the VSET
voltage source to provide 100uA of current to the ampli er. The Idd and Vdd quiescent performance will not change
as a function of changing the VSET voltage.
RF Performance at 5.8 GHz (Vdd = +3V)
Schematic
VSET
(VDC)
RBIAS Resistor
Between Pin 3 and
GND (Ohms)
Idd (mA) Output
P1dB (dBm)
Output
Return Loss
(dB)
0 174 7 1.0 16.0
3 22 25 9.0 12.0
3 7 40 13.0 15.0
3GND
(No Resistor) 60 14.0 15.0
HMC320MS8G / 320MS8GE
GaAs MMIC LOW NOISE
AMPLIFIER , 5 - 6 GHz
v03.0308
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOW NOISE AMPLIFIERS - SMT
8
8 - 24
Absolute Maximum Ratings
Outline Drawing
Truth Table
Set external bias resistor (RBIAS) to achieve desired operat-
ing current, 0 < RBIAS < 200 Ohm.
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
5. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO
PCB RF GROUND.
Drain Bias Voltage (Vdd) +7.0 Vdc
Control Voltage Range (VSET) 0 to Vdd
RF Input Power (RFIN)(Vdd = +3.0 Vdc) +5 dBm
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 2.98 mW/°C above 85 °C) 0.194 W
Thermal Resistance
(channel to ground paddle) 336 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
VSET Operating
Current Idd
Operating
State Resistor Rbias
0V 7 mA Low Power 174 Ohm
3V 25 mA Medium Power 22 Ohm
3V 40 mA High Power 7 Ohm
HMC320MS8G / 320MS8GE
GaAs MMIC LOW NOISE
AMPLIFIER , 5 - 6 GHz
v03.0308
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC320MS8G Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H320
XXXX
HMC320MS8GE RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H320
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
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
LOW NOISE AMPLIFIERS - SMT
8
8 - 25
The circuit board used in the nal 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.
Evaluation PCB
List of Materials for Evaluation PCB 103907 [1]
Item Description
J1, J2 PCB Mount SMA Connector
J3, J4, J5 DC Pins
R1 22 Ohm Resistor, 0603 Pkg.
U1 HMC320MS8G / HMC320MS8GE
Ampli er
PCB [2] 103905 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC320MS8G / 320MS8GE
GaAs MMIC LOW NOISE
AMPLIFIER , 5 - 6 GHz
v03.0308
