MICROWAVE CORPORATION
10 - 96
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
FREQ.
DIVIDER & DETECT
ORS - SMT
10
HMC438MS8G
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
General Description
Features
Functional Diagram
The HMC438MS8G is a low noise Divide-by-5 Static
Divider utilizing InGaP GaAs HBT technology in a
low cost 8 lead surface mount plastic package. This
device operates from DC (with a square wave input)
to 7.0 GHz input frequency from a single +5.0V DC
supply. The low additive SSB phase noise of -153
dBc/Hz at 100 kHz offset helps the user maintain
good system noise performance.
SSB Phase Noise: -153 dBc/Hz @100KHz
Wide Bandwidth
Output Power: -1 dBm
Single DC Supply: +5V @ 80 mA
MS8G SMT Package
Electrical Specifi cations,
T
A
= +25 C, 50 Ohm System, Vcc= 5V
Typical Applications
Prescaler for DC to C Band PLL Applications:
UNII, Pt. - Pt. & VSAT Radios
802.11a & HiperLAN WLAN
Fiber Optic
Cellular / 3G Infrastructure
1. Divider will operate down to DC for square-wave input signal.
v01.1002
Parameter
Conditions
Min.
Typ.
Max.
Units
Maximum Input Frequency
7.0
7.5
GHz
Minimum Input Frequency
Sine Wave Input [1]
0.1
GHz
Input Power Range
Fin= 1 to 5 GHz
-12
-15
+12
dBm
Fin= 5 to 6 GHz
-12
-15
+10
dBm
Fin= 6 to 7 GHz
-10
-15
+5
dBm
Output Power
-4
-1
dBm
Reverse Leakage
Both RF Outputs Terminated
-50
dBm
SSB Phase Noise (100 kHz offset)
Pin= 0 dBm, Fin= 6 GHz
-153
dBc/Hz
Output Transition Time
Pin= 0 dBm, Fout= 882 MHz
100
ps
Supply Current (Icc)
80
mA
MICROWAVE CORPORATION
10 - 97
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
10
FREQ.
DIVIDERS & DETECT
ORS - SMT
-20
-15
-10
-5
0
5
10
15
20
0
1
2
3
4
5
6
7
8
9
INPUT POWER (dBm)
INPUT FREQUENCY (GHz)
-20
-15
-10
-5
0
5
10
15
20
0
1
2
3
4
5
6
7
8
9
Min Pin +25 C
Max Pin +25 C
Min Pin +85 C
Max Pin +85 C
Min Pin -40 C
Max Pin -40 C
INPUT POWER (dBm)
INPUT FREQUENCY (GHz)
-6
-5
-4
-3
-2
-1
0
1
2
3
4
0
1
2
3
4
5
6
7
8
9
+25 C
+85 C
-40 C
OUTPUT POWER (dBm)
INPUT FREQUENCY (GHz)
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
2
10
3
10
4
10
5
10
6
10
7
SSB PHASE NOISE (dBc/Hz)
OFFSET FREQUENCY (Hz)
GaAs MMIC SUB-HARMONICALLY PUMPED MIXER 17 - 25 GHz
HMC438MS8G
SSB Phase Noise Performance,
Pin= 0 dBm, Fin= 6GHz, T= 25 C
Input Sensitivity Window, T= 25 C
Input Sensitivity Window vs. Temperature
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
Output Power vs. Temperature
Recommended
Operating Window
-50
-40
-30
-20
-10
0
0
1
2
3
4
5
6
7
8
9
Pfeedthru
2nd Harm
3rd Harm
OUTPUT LEVEL (dBm)
INPUT FREQUENCY (GHz)
-70
-60
-50
-40
-30
-20
-10
0
0
1
2
3
4
5
6
7
8
9
Both Output Ports Terminated
One Output Port Terminated
OUTPUT LEVEL (dBm)
INPUT FREQUENCY (GHz)
Reverse Leakage, Pin= 0 dBm, T= 25 C
Output Harmonic
Content, Pin= 0 dBm, T= 25 C
v01.1002
MICROWAVE CORPORATION
10 - 98
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
FREQ.
DIVIDER & DETECT
ORS - SMT
10
-300
-200
-100
0
100
200
300
400
22.5
23
23.5
24
24.5
25
25.5
AMPLITUDE (mV)
TIME (ns)
Output Voltage Waveform,
Pin= 0 dBm, Fout= 882 MHz, T= 25 C
Absolute Maximum Ratings
Outline Drawing
Typical Supply Current vs. Vcc
Note: Divider will operate over full voltage range shown above
RF Input (Vcc= +5V)
+13 dBm
Vcc
+5.5V
Maximum Channel Temperature
135 C
Continuous Pdiss (T=85 C)
(derate 11.3mW/C above 92 C)
485mW
Storage Temperature
-65 to +150 C
Operating Temperature
-40 to +85 C
Vcc (V)
Icc (mA)
4.75
75
5.0
80
5.25
87
DC blocking capacitors are required at RF input and RF output ports.
Choose value for lowest frequency of operation.
HMC438MS8G
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
v01.1002
NOTES:
1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEADFRAME MATERIAL: COPPER ALLOY
3. LEADFRAME PLATING: Sn/Pb SOLDER
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
MICROWAVE CORPORATION
10 - 99
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
10
FREQ.
DIVIDERS & DETECT
ORS - SMT
Pin Number
Function
Description
Interface Schematic
1
Vcc
Supply voltage 5V 0.25V.
2
IN
RF input must be DC blocked.
3
IN
RF input 180 out of phase with pin 2 for differential
operation. AC ground for single ended operation.
4, 5
GND
All ground leads and ground paddle must be soldered
to PCB RF/DC ground.
6
OUT
Divided output 180 out of phase with pin 7.
7
OUT
Divided Output.
8
N/C
No Connection
Pin Description
HMC438MS8G
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
v01.1002
MICROWAVE CORPORATION
10 - 100
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
FREQ.
DIVIDER & DETECT
ORS - SMT
10
HMC438MS8G
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
v01.1002
Evaluation PCB
List of Materials
Item
Description
J1 - J3
PC Mount SMA RF Connector
J4, J5
DC Pin
C1 - C4
100 pF Capacitor, 0402 Pkg.
C5
10,000 pF Capacitor, 0603 Pkg.
C6
4.7 F Tantalum Capacitor
U1
HMC438MS8G Divide-by-5
PCB*
105697 Eval Board
* Circuit Board Material: Rogers 4350
The circuit board used in the fi nal application should use
RF circuit design techniques. Signal lines should have
50 ohm impedance while the package ground leads
and backside ground slug should be connected directly
to the ground plane similar to that shown. A suffi cient
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. This evalu-
ation board is designed for single ended input testing. J2
and J3 provide differential output signals.
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