MICROWAVE CORPORATION
14 - 138
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
HMC252QS24
GaAs MMIC SP6T NON-REFLECTIVE
SWITCH, DC - 3.0 GHz
v04.0404
General Description
Features
Functional Diagram
Low Insertion Loss (2 GHz): 0.9 dB
Single Positive Supply: Vdd = +5V
Integrated 3:6 TTL Decoder
24 Lead QSOP Package
Electrical Specifi cations,
T
A
= +25 C, For TTL Control and Vdd = +5V in a 50 Ohm System
Typical Applications
The HMC252QS24 is ideal for:
Base Station
CATV / DBS
MMDS & WirelessLAN
Test Equipment
The HMC252QS24 is a low-cost non-refl ective
SP6T switch in a 24-lead QSOP package fea-
turing wideband operation from DC to 3.0 GHz.
The switch offers a single positive bias and true
TTL/CMOS compatibility. A 3:6 decoder is inte-
grated on the switch requiring only 3 control lines
and a positive bias to select each path. The
HMC252QS24 SP6T replaces multiple confi gu-
rations of SP4T and SPDT MMIC switches and
logic drivers.
Parameter
Frequency
Min.
Typ.
Max.
Units
Insertion Loss
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
0.8
0.9
1.0
1.3
1.2
1.3
1.5
1.8
dB
dB
dB
dB
Isolation
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
38
32
29
26
41
35
32
29
dB
dB
dB
dB
Return Loss
"On State"
DC - 2.5 GHz
DC - 3.0 GHz
14
7
18
12
dB
dB
Return Loss
RF1-6 "Off State"
0.3 - 3.0 GHz
0.5 - 2.5 GHz
8
11
12
15
dB
dB
Input Power for 1dB Compression
0.3 - 3.0 GHz
21
24
dBm
Input Third Order Intercept
(Two-Tone Input Power = +7 dBm Each Tone)
0.3 - 3.0 GHz
42
46
dBm
Switching Characteristics
0.3 - 3.0 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
35
120
ns
ns
MICROWAVE CORPORATION
14 - 139
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
HMC252QS24
-3
-2.5
-2
-1.5
-1
-0.5
0
0
1
2
3
4
INSERTION LOSS (dB)
FREQUENCY (GHz)
+85 C
-40 C
+25 C
-70
-60
-50
-40
-30
-20
-10
0
0
1
2
3
4
ISOLATION (dB)
FREQUENCY (GHz)
RF6
RF1, RF2, RF3, RF4, RF5
-35
-30
-25
-20
-15
-10
-5
0
0
1
2
3
4
RETURN LOSS (dB)
FREQUENCY (GHz)
RF1-6 On
RF1-6 Off
RFC
Return Loss
Insertion Loss
Isolation
v04.0404
GaAs MMIC SP6T NON-REFLECTIVE
SWITCH, DC - 3.0 GHz
Bias Voltage & Current
TTL/CMOS Control Voltages
Vdd Range = +5.0 Vdc 10%
Vdd
(Vdc)
Idd (Typ.)
(mA)
Idd (Max.)
(mA)
+5.0
5.0
8.0
State
Bias Condition
Low
0 to +0.8 Vdc @ 5uA Typ.
High
+2.0 to +5.0 Vdc @ 70 uA Typ.
Truth Table
NOTE:
1. DC Blocking capacitors are required at ports RFC and
RF1, 2, 3, 4, 5, 6.
2. Input is refl ective when "ALL OFF" state is selected.
Control Input
Signal Path State
A
B
C
RFCOM to:
LOW
LOW
LOW
RF1
HIGH
LOW
LOW
RF2
LOW
HIGH
LOW
RF3
HIGH
HIGH
LOW
RF4
LOW
LOW
HIGH
RF5
HIGH
LOW
HIGH
RF6
LOW
HIGH
HIGH
ALL OFF
HIGH
HIGH
HIGH
ALL OFF
MICROWAVE CORPORATION
14 - 140
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
HMC252QS24
v04.0404
GaAs MMIC SP6T NON-REFLECTIVE
SWITCH, DC - 3.0 GHz
Absolute Maximum Ratings
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.
Bias Voltage Range (Port Vdd)
+7.0 Vdc
Control Voltage Range (A, B, C)
-0.5V to Vdd +1 Vdc
Channel Temperature
150 C
Thermal Resistance
(Insertion Loss Path)
240 C/W
Thermal Resistance
(Terminated Path)
260 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)
+26 dBm (0.5 - 3.0 GHz)
MICROWAVE CORPORATION
14 - 141
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
HMC252QS24
v04.0404
GaAs MMIC SP6T NON-REFLECTIVE
SWITCH, DC - 3.0 GHz
Evaluation Circuit Board
The circuit board used in the fi nal application should be generated with proper RF circuit design techniques. Signal
lines at the RF ports should have 50 ohm impedance while the package ground leads should be connected directly to
the ground plane similar to that shown above. A suffi cient number of VIA holes should be used to connect the top and
bottom ground planes. The evaluation circuit board shown above is available from Hittite Microwave Corporation upon
request.
List of Material
Item
Description
J1 - J7
PC Mount SMA Connector
J8 - J12
DC Pin
C1 - C7
100 pF Capacitor, 0402 Pkg.
C8 - C11
10,000 pF Capacitor, 0603 Pkg.
U1
HMC252QS24 SP8T Switch
PCB*
103700 Eval Board
* Circuit Board Material: Rogers 4350
PDF 
ZIP