HMC438MS8G
/
438MS8GE
v03.0705
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
Typical Applications
Features
SSB Phase Noise: -153 dBc/Hz @100KHz
Wide Bandwidth
Output Power: -1 dBm
Single DC Supply: +5V @ 80 mA
MS8G SMT Package
6
FREQUENCY DIVIDERS & DETECTORS - SMT
Prescaler for DC to C Band PLL Applications:
• UNII, Point-to-Point & VSAT Radios
• 802.11a & HiperLAN WLAN
• Fiber Optic
• Cellular / 3G Infrastructure
Functional Diagram
General Description
The HMC438MS8G & HMC438MS8GE are low noise
Divide-by-5 Static Dividers utilizing InGaP GaAs HBT
technology in low cost 8 lead surface mount plas-
tic packages. 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.
Electrical Specifications,
T
A
= +25° C, 50 Ohm System, Vcc= 5V
Parameter
Maximum Input Frequency
Minimum Input Frequency
Input Power Range
Sine Wave Input [1]
Fin= 1 to 5 GHz
Fin= 5 to 6 GHz
Fin= 6 to 7 GHz
Output Power
Reverse Leakage
SSB Phase Noise (100 kHz offset)
Output Transition Time
Supply Current (Icc)
Both RF Outputs Terminated
Pin= 0 dBm, Fin= 6 GHz
Pin= 0 dBm, Fout= 882 MHz
-12
-12
-10
-4
Conditions
Min.
7.0
Typ.
7.5
0.1
-15
-15
-15
-1
-50
-153
100
80
+12
+10
+5
Max.
Units
GHz
GHz
dBm
dBm
dBm
dBm
dBm
dBc/Hz
ps
mA
1. Divider will operate down to DC for square-wave input signal.
6 - 90
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
HMC438MS8G
/
438MS8GE
v03.0705
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
Input Sensitivity Window, T= 25 °C
20
15
INPUT POWER (dBm)
Input Sensitivity Window vs. Temperature
20
15
INPUT POWER (dBm)
10
5
0
-5
-10
-15
-20
Min Pin +25 C
Max Pin +25 C
Min Pin +85 C
Max Pin +85 C
Min Pin -40 C
Max Pin -40 C
6
FREQUENCY DIVIDERS & DETECTORS - SMT
10
5
0
-5
-10
-15
-20
0
1
2
3
4
5
6
7
8
9
INPUT FREQUENCY (GHz)
Recommended
Operating Window
0
1
2
3
4
5
6
7
8
9
INPUT FREQUENCY (GHz)
Output Power vs. Temperature
4
3
OUTPUT POWER (dBm)
2
1
0
-1
-2
-3
-4
-5
-6
0
1
2
3
4
5
6
7
8
9
INPUT FREQUENCY (GHz)
+25 C
+85 C
-40 C
SSB Phase Noise Performance,
Pin= 0 dBm, Fin= 6GHz, T= 25 °C
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
2
10
SSB PHASE NOISE (dBc/Hz)
10
3
10
4
10
5
10
6
10
7
OFFSET FREQUENCY (Hz)
Output Harmonic
Content, Pin= 0 dBm, T= 25 °C
0
Reverse Leakage, Pin= 0 dBm, T= 25 °C
0
-10
Both Output Ports Terminated
One Output Port Terminated
-10
OUTPUT LEVEL (dBm)
OUTPUT LEVEL (dBm)
-20
-30
-40
-50
-60
-70
0
1
2
3
4
5
6
7
8
9
0
1
2
3
-20
-30
-40
Pfeedthru
2nd Harmonic
-50
INPUT FREQUENCY (GHz)
4
5
6
7
8
9
INPUT FREQUENCY (GHz)
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
6 - 91
HMC438MS8G
/
438MS8GE
v03.0705
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
Output Voltage Waveform,
Pin= 0 dBm, Fout= 882 MHz, T= 25 °C
Absolute Maximum Ratings
RF Input (Vcc= +5V)
Vcc
Maximum Channel Temperature
Continuous Pdiss (T=85 °C)
(derate 11.3mW/°C above 92 °C)
Storage Temperature
Operating Temperature
+13 dBm
+5.5V
135 °C
485mW
-65 to +150 °C
-40 to +85 °C
6
FREQUENCY DIVIDERS & DETECTORS - SMT
AMPLITUDE (mV)
300
200
100
0
-100
-200
-300
-400
-500
22.5
DC blocking capacitors are required at RF input and RF output ports.
Choose value for lowest frequency of operation.
23
23.5
24
TIME (ns)
24.5
25
25.5
Typical Supply Current vs. Vcc
Vcc (V)
4.75
Icc (mA)
75
80
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
5.0
5.25
87
Note: Divider will operate over full voltage range shown above
Outline Drawing
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.
Package Information
Part Number
HMC438MS8G
HMC438MS8GE
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
H438
XXXX
H438
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
6 - 92
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
HMC438MS8G
/
438MS8GE
v03.0705
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
Pin Description
Pin Number
1
Function
Vcc
Description
Supply voltage 5V ± 0.25V.
Interface Schematic
6
FREQUENCY DIVIDERS & DETECTORS - SMT
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
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
6 - 93
HMC438MS8G
/
438MS8GE
v03.0705
SMT GaAs HBT MMIC
DIVIDE-BY-5, DC - 7.0 GHz
Evaluation PCB
6
FREQUENCY DIVIDERS & DETECTORS - SMT
List of Materials for Evaluation PCB 105786
[1]
Item
J1 - J3
J4, J5
C1 - C4
C5
C6
U1
PCB
[2]
Description
PCB Mount SMA RF Connector
DC Pin
100 pF Capacitor, 0402 Pkg.
10,000 pF Capacitor, 0603 Pkg.
4.7 μF Tantalum Capacitor
HMC438MS8G / HMC438MS8GE
Divide-by-5
105697 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the final 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 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. This evaluation board is
designed for single ended input testing. J2 and J3
provide differential output signals.
6 - 94
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
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