HMC253QS24
/
253QS24E
v04.0805
GaAs MMIC SP8T NON-REFLECTIVE
SWITCH, DC - 2.5 GHz
Typical Applications
The HMC253QS24 / HMC253QS24E is ideal for
DC - 2.5 GHz applications:
• CATV/DBS
• CDMA
• Cellular/PCS
Features
Low Insertion Loss (2 GHz): 1.3dB
Single Positive Supply: Vdd = +5V
Integrated 3:8 TTL Decoder
24 Lead QSOP Package
9
SWITCHES - SMT
Functional Diagram
General Description
The HMC253QS24 & HMC253QS24E are low-cost
non-reflective SP8T switches in 24-lead QSOP
packages featuring wideband operation from DC
to 2.5 GHz. The switch offers a single positive bias
and true TTL/CMOS compatibility. A 3:8 decoder
is integrated on the switch requiring only 3 control
lines and a positive bias to select each path. The
HMC253QS24 & HMC253QS24E SP8T will replace
multiple configurations of SP4T and SPDT MMIC
switches.
Electrical Specifi cations,
T
A
= +25° C, For TTL Control and Vdd = +5V in a 50 Ohm system
Parameter
Insertion Loss
Frequency
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
“On State”
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
0.3 - 2.5 GHz
0.5 - 2.5 GHz
0.3 - 2.5 GHz
0.3 - 2.5 GHz
0.3 - 2.5 GHz
30
100
ns
ns
32
26
24
14
9
6
7
10
20
40
Min.
Typ.
1.1
1.3
1.8
36
30
28
18
12
8
10
13
23
43
Max.
1.5
1.7
2.4
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
Isolation
Return Loss
Return Loss (RF1-8)
Input Power for 1 dB Compression
Input Third Order Intercept
(Two-Tone Input Power = +7 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
“Off State”
9 - 134
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
HMC253QS24
/
253QS24E
v04.0805
GaAs MMIC SP8T NON-REFLECTIVE
SWITCH, DC - 2.5 GHz
Insertion Loss
0
-0.5
INSERTION LOSS (dB)
-1
-1.5
-2
-2.5
-3
0
1
2
3
FREQUENCY (GHz)
+25 C
+85 C
-40 C
Isolation
0
-10
RF6, RF3
ISOLATION (dB)
-20
-30
-40
-50
-60
RF1, RF2, RF4, RF5, RF7, RF8
-70
0
1
2
3
FREQUENCY (GHz)
9
SWITCHES - SMT
Return Loss
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
0
1
2
3
FREQUENCY (GHz)
RFC
RFC 1-6 On
RFC 1-6 Off
Bias Voltage & Current
Vdd Range = +5.0 Vdc ± 10%
Vdd
(Vdc)
+5.0
Idd (Typ.)
(mA)
6.0
Idd (Max.)
(mA)
9.0
Truth Table
Control Input
A
Low
High
Low
B
Low
Low
High
High
Low
Low
High
High
C
Low
Low
Low
Low
High
High
High
High
Signal Path State
RFCOM to:
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RF8
TTL/CMOS Control Voltages
State
Low
High
Bias Condition
0 to +0.8 Vdc @ 5 uA Typ.
+2.0 to +5.0 Vdc @ 70 uA Typ.
High
Low
High
Low
High
NOTE:
DC Blocking capacitors are required at ports RFC and RF1, 2, 3, 4, 5, 6, 7, 8.
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
9 - 135
HMC253QS24
/
253QS24E
v04.0805
GaAs MMIC SP8T NON-REFLECTIVE
SWITCH, DC - 2.5 GHz
Absolute Maximum Ratings
Bias Voltage Range (Port Vdd)
Control Voltage Range (A, B, C)
Storage Temperature
Operating Temperature
Maximum Input Power
Vdd = +5V
+7.0 Vdc
-0.5V to Vdd +1Vdc
-65 to +150 °C
-40 to +85 °C
+20 dBm (0.05 - 0.5 GHz)
+24 dBm (0.5 - 2.5 GHz)
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
9
Outline Drawing
SWITCHES - SMT
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.
Package Information
Part Number
HMC253QS24
HMC253QS24E
Package Body Material
Low Stress Injection Molded Plastic Silica
and Silicon Impregnated
RoHS-compliant Low Stress Injection Molded
Plastic Silica and Silicon Impregnated
Leadframe Plating
Sn/Pb Solder
100% Matte Tin
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
HMC253
XXXX
HMC253
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
9 - 136
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
HMC253QS24
/
253QS24E
v04.0805
GaAs MMIC SP8T NON-REFLECTIVE
SWITCH, DC - 2.5 GHz
Evaluation Circuit Board
9
SWITCHES - SMT
List of Materials for Evaluation PCB 103706
[1]
Item
J1 - J9
J10 - J14
C1 - C9
C10
U1
PCB
[2]
Description
PCB Mount SMA Connector
DC Pin
100 pF Capacitor, 0402 Pkg.
0.01 uF Capacitor, 0603 Pkg.
HMC253QS24 / HMC253QS24E
SP8T Switch
103704 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the final application should
be generated with proper RF circuit design tech-
niques. 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 sufficient 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.
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
9 - 137
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