HMC358MS8G
/
358MS8GE
v04.0607
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
Features
Pout: +11 dBm
Phase Noise: -110 dBc/Hz @100 KHz
No External Resonator Needed
Single Supply: 3V @ 100 mA
15mm
2
MSOP8G SMT Package
Typical Applications
Low noise MMIC VCO w/Buffer Amplifier
for C-Band applications such as:
• UNII & Pt. to Pt. Radios
• 802.11a & HiperLAN WLAN
• VSAT Radios
Functional Diagram
General Description
The HMC358MS8G & HMC358MS8GE are GaAs
InGaP Heterojunction Bipolar Transistor (HBT) MMIC
VCOs. The HMC358MS8G & HMC358MS8GE inte-
grate resonators, negative resistance devices, varac-
tor diodes, and buffer amplifiers. The VCO’s phase
noise performance is excellent over temperature,
shock, and process due to the oscillator’s monolithic
structure. Power output is 11 dBm typical from a 3V
supply voltage. The voltage controlled oscillator is
packaged in a low cost, surface mount 8 lead MSOP
package with an exposed base for improved RF and
thermal performance.
11
VCO
S
& PLOs - SMT
Electrical Specifi cations,
T
A
= +25° C, Vcc = +3V
Parameter
Frequency Range
Power Output
SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output
Tune Voltage (Vtune)
Supply Current (Icc)
Tune Port Leakage Current (Vtune= 10V)
Output Return Loss
Harmonics
2nd
3rd
Pulling (into a 2.0:1 VSWR)
Pushing @ Vtune= +3V
Frequency Drift Rate
9
-10
-20
10
150
0.8
0
100
10
8
Min.
Typ.
5.8 - 6.8
11
-110
10
Max.
Units
GHz
dBm
dBc/Hz
V
mA
μA
dB
dB
dB
MHz pp
MHz/V
MHz/°C
11 - 2
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
HMC358MS8G
/
358MS8GE
v04.0607
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
Frequency vs. Tuning Voltage, Vcc= +3V
7.2
OUTPUT FREQUENCY (GHz)
7
6.8
6.6
6.4
6.2
6
5.8
5.6
+25 C
+85 C
-40 C
Frequency vs. Tuning Voltage, T= 25°C
7.2
OUTPUT FREQUENCY (GHz)
7
6.8
6.6
6.4
6.2
6
5.8
5.6
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
Vcc= 2.75V
Vcc= 3.0V
Vcc= 3.25V
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
11
VCO
S
& PLOs - SMT
11 - 3
Sensitivity vs. Tuning Voltage, Vcc= +3V
300
250
200
150
100
50
0
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
Output Power vs.
Tuning Voltage, Vcc= +3V
20
SENSITIVITY (MHz/VOLT)
OUTPUT POWER (dBm)
16
12
8
+25 C
+85 C
-40 C
4
0
0
2
4
6
8
10
TUNING VOLTAGE (VOLTS)
Phase Noise vs. Tuning Voltage
-60
SSB PHASE NOISE (dBc/Hz)
-70
-80
-90
10 kHz offset
100 kHz offset
Typical SSB Phase Noise @ Vtune= +5V
0
SSB PHASE NOISE (dBc/Hz)
-25
-50
-75
-100
-125
-150
3
10
+25 C
+85 C
-40 C
-100
-110
-120
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
10
4
10
5
10
6
10
7
OFFSET FREQUENCY (Hz)
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
HMC358MS8G
/
358MS8GE
v04.0607
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
Typical Supply Current vs. Vcc
Vcc (V)
2.75
3.0
3.25
Icc (mA)
80
100
115
Absolute Maximum Ratings
Vcc
Storage Temperature
Operating Temperature
Vtune
ESD Sensitivity (HBM)
3.5 Vdc
-65 to +150 °C
-40 to +85 °C
0 to 11V
Class 1A
Note: VCO will operate over full voltage range shown above.
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
11
VCO
S
& PLOs - SMT
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
HMC358MS8G
HMC358MS8GE
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]
H358
XXXX
H358
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
11 - 4
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
HMC358MS8G
/
358MS8GE
v04.0607
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
Pin Descriptions
Pin Number
Function
Description
Interface Schematic
1
Vcc
Supply Voltage Vcc= 3V
2, 6, 7
N/C
No Connection
3
VTUNE
Control Voltage Input. Modulation port bandwidth
dependent on drive source impedance.
11
VCO
S
& PLOs - SMT
11 - 5
4, 5
GND
Package bottom has an exposed metal paddle that
must be RF & DC grounded.
8
RFOUT
RF output (AC coupled).
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
HMC358MS8G
/
358MS8GE
v04.0607
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
Evaluation PCB
11
VCO
S
& PLOs - SMT
List of Materials for Evaluation PCB 104713
[1]
Item
J1 - J3
C1
U1
PCB
[2]
Description
PCB Mount SMA RF Connector
10 μF Tantalum Capacitor
HMC358MS8G / HMC358MS8GE VCO
104368 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.
11 - 6
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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