SWITCHES - SMT
10
10 - 124
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
HMC245QS16 / 245QS16E
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v02.0805
General Description
Features
Functional Diagram
The HMC245QS16 & HMC245QS16E are low cost
non-re ective SP3T switches in 16-lead QSOP sur-
face mount packages. Covering DC to 3.5 GHz, the
switch offers 30 to 40 dB isolation and a low insertion
loss of 0.5 dB. A 2:3 TTL/CMOS compatible decoder
is integrated on the switch requiring only 2 control
lines and a single +5V bias to select each path, replac-
ing 6 control lines normally required by GaAs SP3T
switches.
Low Insertion Loss: 0.5 dB @ 2.0 GHz
Non-Re ective Design
Integrated 2:3 TTL Decoder
“All Off” Isolation State
Single Positive Suppy: Vdd = +5V
16 Lead QSOP SMT Package
Electrical Speci cations,
TA = +25° C, For TTL Control and Vdd= +5V in a 50 Ohm System
Typical Applications
The HMC245QS16 / HMC245QS16E is ideal for:
• Basestation Infrastructure
• CATV / DBS
• Wireless Local Loop
• Test Equipment
Parameter Frequency Min. Typ. Max. Units
Insertion Loss
DC - 2.0 GHz
DC - 3.0 GHz
DC - 3.5 GHz
0.5
0.6
0.7
0.8
0.9
1. 0
dB
dB
dB
Isolation
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.5 GHz
40
35
31
26
44
39
35
30
dB
dB
dB
dB
Return Loss “On State” DC - 1.5 GHz
DC - 3.5 GHz
20
17
dB
dB
Return Loss RF1 - 3 “Off State” 0.3 - 3.5 GHz
0.5 - 3.5 GHz
12
15
dB
dB
Input Power for 1 dB Compression 0.3 - 2.5 GHz
0.3 - 3.5 GHz
23
22
26
25 dBm
Input Third Order Intercept
(Two-tone Input Power = +7 dBm each tone)
0.3 - 2.5 GHz
0.3 - 3.5 GHz
44
40
48
44 dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.3 - 3.5 GHz 40
150
ns
ns
SWITCHES - SMT
10
10 - 125
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
Input Third Order Intercept Point
Return Loss Off State Isolation
Insertion Loss vs. Temperature Isolation
0.1 and 1 dB Input Compression Point
HMC245QS16 / 245QS16E
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v02.0805
-3
-2.5
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
+25C
+85C
-40C
INSERTION LOSS (dB)
FREQUENCY (GHz)
40
42
44
46
48
50
52
54
0.5 1 1.5 2 2.5 3 3.5 4
INPUT IP3 (dBm)
FREQUENCY (GHz)
20
22
24
26
28
30
0.5 1 1.5 2 2.5 3 3.5 4
0.1 dB Compression Point
1 dB Compression Point
INPUT COMPRESSION POINT (dBm)
FREQUENCY (GHz)
-70
-60
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RF1
RF2
RF3
ISOLATION (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RFC
RF1-3 "On"
RF1-3 "Off"
RETURN LOSS (dB)
FREQUENCY (GHz)
-70
-60
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RF1
RF2
RF3
ISOLATION (dB)
FREQUENCY (GHz)
SWITCHES - SMT
10
10 - 126
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
Truth Table
TTL/CMOS Control Voltages
Control Input Signal Path State
A B RF COM to:
Low Low RF1
High Low RF2
Low High RF3
High High All Off
Bias Voltage & Current
Vdd Range= +5.0 Vdc ±10%
Vdd (Vdc) Idd (Typ) (mA) Idd (Max) (mA)
+5.0 3.0 6.0
State Bias Condition
Low 0 to +0.8 Vdc @ 5 uA Typ.
High +2.0 to +5.0 Vdc @ 70 uA Typ.
HMC245QS16 / 245QS16E
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v02.0805
SWITCHES - SMT
10
10 - 127
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
Outline Drawing
Absolute Maximum Ratings
Bias Voltage Range (Port Vdd) +7.0 Vdc
Control Voltage Range (A & B) -0.5V to Vdd +1 Vdc
Channel Temperature 150 °C
Thermal Resistance
(Insertion Loss Path) 210 °C/W
Thermal Resistance
(Terminated Path) 250 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
Maximum Input Power
Vdd = +5 Vdc
+20 dBm (0.05 - 0.5 GHz)
+27 dBm (0.5 - 3.5 GHz)
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
HMC245QS16 / 245QS16E
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v02.0805
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 MUST BE SOLDERED TO PCB RF GROUND.
Part Number Package Body Material Leadframe Plating MSL Rating Package Marking [3]
HMC245QS16 Low Stress Injection Molded Plastic Silica
and Silicon Impregnated Sn/Pb Solder MSL1 [1] HMC245
XXXX
HMC245QS16E RoHS-compliant Low Stress Injection Molded
Plastic Silica and Silicon Impregnated 100% Matte Tin MSL1 [2] HMC245
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
SWITCHES - SMT
10
10 - 128
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, 6, 12, 14 RF3, RF2,
RF1, RFC
This pin is DC coupled and matched to 50 Ohms.
Blocking capacitors are required.
2 - 5, 7, 11, 13,
15, 16 GND This pin must be connected to PCB RF
ground to maximize isolation.
8 Vdd Supply Voltage +5.0 Vdc ±10%
9 B See truth table and control voltage table.
10 A See truth table and control voltage table.
HMC245QS16 / 245QS16E
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v02.0805
SWITCHES - SMT
10
10 - 129
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
Evaluation PCB
The circuit board used in the nal application
should be generated with proper RF circuit design
techniques. Signal lines at the RF port should have
50 ohm impedance and the package ground leads
should be connected directly to the ground plane
similar to that shown above. The evaluation circuit
board shown above is available from Hittite Micro-
wave Corporation upon request.
Item Description
J1 - J4 PCB Mount SMA RF Connector
J5 - J8 DC Pin
C1 - C4 100 pF Capacitor, 0402 Pkg.
C5 10k pF Capacitor, 0603 Pkg.
U1 HMC245QS16 / HMC245QS16E
SP3T Switch
PCB [2] 106536 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC245QS16 / 245QS16E
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v02.0805
List of Materials for Evaluation PCB 106687 [1]
