MICROWAVE CORPORATION
14 - 132
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
SWITCHES - SMT
14
HMC245QS16
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v01.0404
General Description
Features
Functional Diagram
The HMC245QS16 is a low cost non-refl ective SP3T
switch in a 16-lead QSOP surface mount package.
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, replacing 6 control lines normally
required by GaAs SP3T switches.
Low Insertion Loss: 0.5 dB @ 2.0 GHz
Non-Refl ective Design
Integrated 2:3 TTL Decoder
"All Off" Isolation State
Single Positive Suppy: Vdd = +5V
16 Lead QSOP SMT Package
Electrical Specifi cations,
T
A
= +25 C, For TTL Control and Vdd= +5V in a 50 Ohm System
Typical Applications
The HMC245QS16 is ideal for:
Basestation Infrastructure
CATV / DBS
Wireless Local Loop
Test Equipmen
t
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
MICROWAVE CORPORATION
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12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
14
SWITCHES - SMT
-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)
-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)
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)
GaAs MMIC SUB-HARMONICALLY PUMPED MIXER 17 - 25 GHz
HMC245QS16
Input Third Order Intercept Point
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v01.0404
Return Loss
Off State Isolation
Insertion Loss vs. Temperature
Isolation
20
21
22
23
24
25
26
27
28
29
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)
0.1 and 1 dB Input Compression Point
MICROWAVE CORPORATION
14 - 134
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
SWITCHES - SMT
14
HMC245QS16
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v01.0404
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.
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)
MICROWAVE CORPORATION
14 - 135
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
14
SWITCHES - SMT
HMC245QS16
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v01.0404
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEADFRAME MATERIAL: COPPER ALLOY
3. LEADFRAME PLATING: Sn/Pb SOLDER
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
7. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
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.
MICROWAVE CORPORATION
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
SWITCHES - SMT
14
HMC245QS16
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v01.0404
Evaluation PCB
The circuit board used in the fi nal application should
be generated with proper RF circuit design techniques.
Signal lines at the RF port should have 50 ohm imped-
ance 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 Microwave Corporation upon request.
List of Material
Item
Description
J1 - J4
PC Mount SMA RF Connector
J5 - J8
DC Pin
C1 - C4
100 pF Capacitor, 0402 Pkg.
C5
10k pF Capacitor, 0603 Pkg.
U1
HMC245QS16 SP3T Switch
PCB*
106536 Evaluation PCB
* Circuit Board Material: Rogers 4350
MICROWAVE CORPORATION
14 - 137
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
14
SWITCHES - SMT
HMC245QS16
GaAs MMIC SP3T NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
v01.0404
Notes:
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