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VCOS & PLOs - SMT
11
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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
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
v04.0607
General Description
Features
Functional Diagram
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 ampli ers. 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.
Pout: +11 dBm
Phase Noise: -110 dBc/Hz @100 KHz
No External Resonator Needed
Single Supply: 3V @ 100 mA
15mm2 MSOP8G SMT Package
Typical Applications
Low noise MMIC VCO w/Buffer Ampli er
for C-Band applications such as:
• UNII & Pt. to Pt. Radios
• 802.11a & HiperLAN WLAN
• VSAT Radios
Electrical Speci cations, TA = +25° C, Vcc = +3V
Parameter Min. Typ. Max. Units
Frequency Range 5.8 - 6.8 GHz
Power Output 811 dBm
SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output -110 dBc/Hz
Tune Voltage (Vtune) 0 10 V
Supply Current (Icc) 100 mA
Tune Port Leakage Current (Vtune= 10V) 10 μA
Output Return Loss 9dB
Harmonics
2nd
3rd
-10
-20
dB
dB
Pulling (into a 2.0:1 VSWR) 10 MHz pp
Pushing @ Vtune= +3V 150 MHz/V
Frequency Drift Rate 0.8 MHz/°C
VCOS & PLOs - SMT
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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
Frequency vs. Tuning Voltage, T= 25°C
Sensitivity vs. Tuning Voltage, Vcc= +3V
Typical SSB Phase Noise @ Vtune= +5VPhase Noise vs. Tuning Voltage
Frequency vs. Tuning Voltage, Vcc= +3V
Output Power vs.
Tuning Voltage, Vcc= +3V
HMC358MS8G / 358MS8GE
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
v04.0607
5.6
5.8
6
6.2
6.4
6.6
6.8
7
7.2
012345678910
Vcc= 2.75V
Vcc= 3.0V
Vcc= 3.25V
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
-150
-125
-100
-75
-50
-25
0
103104105106107
+25 C
+85 C
-40 C
SSB PHASE NOISE (dBc/Hz)
OFFSET FREQUENCY (Hz)
-120
-110
-100
-90
-80
-70
-60
12345678910
10 kHz offset
100 kHz offset
SSB PHASE NOISE (dBc/Hz)
TUNING VOLTAGE (VOLTS)
0
4
8
12
16
20
0246810
+25 C
+85 C
-40 C
OUTPUT POWER (dBm)
TUNING VOLTAGE (VOLTS)
0
50
100
150
200
250
300
012345678910
+25 C
+85 C
-40 C
SENSITIVITY (MHz/VOLT)
TUNING VOLTAGE (VOLTS)
5.6
5.8
6
6.2
6.4
6.6
6.8
7
7.2
012345678910
+25 C
+85 C
-40 C
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
VCOS & PLOs - SMT
11
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
Absolute Maximum Ratings
Outline Drawing
Vcc 3.5 Vdc
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
Vtune 0 to 11V
ESD Sensitivity (HBM) Class 1A
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.
Typical Supply Current vs. Vcc
Note: VCO will operate over full voltage range shown above.
Vcc (V) Icc (mA)
2.75 80
3.0 100
3.25 115
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
HMC358MS8G / 358MS8GE
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
v04.0607
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC358MS8G Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H358
XXXX
HMC358MS8GE RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H358
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
VCOS & PLOs - SMT
11
11 - 5
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
Pin Descriptions
Pin Number Function Description Interface Schematic
1 Vcc Supply Voltage Vcc= 3V
2, 6, 7 N/C No Connection
3VTUNE
Control Voltage Input. Modulation port bandwidth
dependent on drive source impedance.
4, 5 GND Package bottom has an exposed metal paddle that
must be RF & DC grounded.
8 RFOUT RF output (AC coupled).
HMC358MS8G / 358MS8GE
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
v04.0607
VCOS & PLOs - SMT
11
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
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 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.
Evaluation PCB
List of Materials for Evaluation PCB 104713 [1]
Item Description
J1 - J3 PCB Mount SMA RF Connector
C1 10 μF Tantalum Capacitor
U1 HMC358MS8G / HMC358MS8GE VCO
PCB [2] 104368 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC358MS8G / 358MS8GE
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
v04.0607
VCOS & PLOs - SMT
11
11 - 7
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
Notes:
HMC358MS8G / 358MS8GE
MMIC VCO w/ BUFFER
AMPLIFIER, 5.8 - 6.8 GHz
v04.0607
