HMC398QS16G / 398QS16GE
v03.0810
Ku-Band MMIC VCO wIth dIVIdE-BY-8
14 - 15 Ghz
typical applications
Features
Pout: +7 dBm
Phase Noise: -105 dBc/Hz @100 kHz Typ.
No External Resonator Needed
single supply: 5V @ 325 mA
QsOP16G sMT Package
VCOs - sMT
Low noise MMIC VCO w/Divide-by-8
for Ku-Band applications such as:
• Point-to-Point Radios
• Point-to-Multi-Point Radios / LMDS
• VSAT
Functional diagram
General description
The HMC398Qs16G & HMC398Qs16GE are single
chip GaAs InGaP Heterojunction Bipolar Transis-
tor (HBT) MMIC VCOs. The HMC398Qs16G &
HMC398Qs16GE integrate resonators, negative
resistance devices, varactor diodes and divide-by-8
prescalers. The VCO’s phase noise performance is
excellent over temperature, shock, and process due
to the oscillator’s monolithic structure. Power output
is +7 dBm typical from a 5V supply voltage. The
voltage controlled oscillator is packaged in a low
cost, surface mount 16 leaded QsOP package with
an exposed base for improved RF and thermal per-
formance. The HMC398Qs16G & HMC398Qs16GE
require no external components
Electrical Specifications,
t
a
= +25° C, Vcc1, Vcc2 = +5.0V
Parameter
Frequency Range
Power Output
ssB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output
Tune Voltage
supply Current
Tune Port Leakage Current (Vtune= 10V)
Output Return Loss
Harmonics/subharmonics
1/2
3/2
2nd
5/2
2
-20
-30
-12
-40
4
30
1.5
Vtune
Icc 1 (Digital)
Icc 2 (RF)
1.0
65
260
10
RF Output
Divided Output
+3
-9
Min.
Typ.
14.0 - 15.0
+7
-6
-105
10.0
Max.
Units
GHz
dBm
dBm
dBc/Hz
V
mA
mA
µA
dB
dBc
dBc
dBc
dBc
MHz pp
MHz/V
MHz/°C
Pulling (into a 2.0:1 VsWR)
Pushing @ Vtune= 5V
Frequency Drift Rate
1
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC398QS16G / 398QS16GE
v03.0810
Ku-Band MMIC VCO wIth dIVIdE-BY-8
14 - 15 Ghz
Frequency vs. tuning Voltage, t= 25°C
15.4
OUTPUT FREQUENCY (GHz)
OUTPUT FREQUENCY (GHz)
15.2
15
14.8
14.6
14.4
14.2
14
13.8
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
Vcc= 4.75V
Vcc= 5.0V
Vcc= 5.25V
Frequency vs. tuning Voltage, Vcc= +5V
15.4
15
14.8
14.6
14.4
14.2
14
13.8
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
Sensitivity vs. tuning Voltage, Vcc= +5V
400
350
SENSITIVITY (MHz/VOLT)
300
250
200
150
100
50
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= +5V
15
OUTPUT POWER (dBm)
12
9
6
+25 C
+85 C
-40 C
3
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
SSB Phase noise vs. tuning Voltage
-60
SSB PHASE NOISE (dBc/Hz)
-70
-80
-90
-100
-110
-120
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
10 kHz offset
100 kHz offset
SSB Phase noise @ Vtune= 5V
0
-15
SSB PHASE NOISE (dBc/Hz)
-30
-45
-60
-75
-90
-105
-120
-135
-150
3
10
10
4
+25 C
+85 C
-40 C
10
5
10
6
10
7
OFFSET FREQUENCY (Hz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VCOs - sMT
2
15.2
HMC398QS16G / 398QS16GE
v03.0810
Ku-Band MMIC VCO wIth dIVIdE-BY-8
14 - 15 Ghz
divided Output
Frequency vs. tuning Voltage, Vcc= +5V
DIVIDED OUTPUT FREQUENCY (GHz)
1.94
1.9
1.88
1.86
1.84
1.82
1.8
1.78
1.76
1.74
1.72
1.7
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
divided Output
Power vs. tuning Voltage, Vcc= +5V*
0
DIVIDED OUTPUT POWER (dBm)
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
VCOs - sMT
1.92
divided Output
SSB Phase noise @ Vtune = 5V
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
3
10
SSB PHASE NOISE (dBc/Hz)
10
4
10
5
10
6
10
7
OFFSET FREQUENCY (Hz)
absolute Maximum Ratings
Vcc1, Vcc2
storage Temperature
Operating Temperature
Vtune
+5.5
-65 to +150 °C
-40 to +85 °C
0 to 11V
typical Supply Current vs. Vcc
Vcc (V)
4.75
5.0
5.25
Icc (mA)
300
325
350
Note: VCO will operate over full voltage range shown above.
ELECTROsTATIC sENsITIVE DEVICE
OBsERVE HANDLING PRECAUTIONs
*Note: Tuning voltage must not drop below 1.0V for proper divider output.
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC398QS16G / 398QS16GE
v03.0810
Ku-Band MMIC VCO wIth dIVIdE-BY-8
14 - 15 Ghz
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
HMC398Qs16G
HMC398Qs16GE
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]
HMC398
XXXX
HMC398
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
Pin descriptions
Pin Number
Function
Description
Interface schematic
1
RFOUT
RF output (AC coupled).
2, 3, 4, 6, 8, 9,
10, 13, 14, 16
N/C
No Connection
5
VTUNE
Control Voltage Input. Modulation port bandwidth
dependent on drive source impedance.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
VCOs - sMT
4
HMC398QS16G / 398QS16GE
v03.0810
Ku-Band MMIC VCO wIth dIVIdE-BY-8
14 - 15 Ghz
Pin descriptions
Pin Number
Function
Description
Interface schematic
VCOs - sMT
7, 15
VCC1, VCC2
supply Voltage, 5V
11
OUT
Divided Output
12
NOUT
Divided Output 180° output phase with pin 11.
GND
Package bottom has an exposed metal paddle that
must be RF & DC grounded.
typical application Circuit
5
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
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