7 - 82
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Web Site: www.hittite.com
M I C R O W A V E C O R P O R A T I O N
F
EBRUARY
2001
'99
new!
S
WITCHES
7
SP4T
SMT
Features
GaAs MMIC SP4T SWITCH NON-REFLECTIVE DC TO 6.0 GHz
BROADBAND PERFORMANCE: DC to 6GHz
SINGLE POSITIVE SUPPLY: Vdd = +5V
INTEGRATED 2:4 TTL DECODER
CERAMIC SMT PACKAGE
General Description
The HMC222C12 is a broadband non-re-
flective SP4T switch in a ceramic surface
mount package. This SP4T switch covers
RF telecom/datacom bands from DC - 6
GHz. The switch offers a single positive
bias and true TTL/CMOS compatibility. A
2:4 decoder is integrated on the switch re-
quiring only 2 control lines and a +5V bias to
select each path. An input IP3 of +40 dBm
helps maintain the best possible dynamic
range in receiver & test instrument applica-
tions. The integrated 2:4 TTL/CMOS de-
coder replaces 8 control lines normal re-
quired by GaAs SP4T switches.
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Guaranteed Performance
For TTL Control and Vdd = +5V in a 50 Ohm system, -40 to +85 deg C
HMC222C12
V
02.0101
7 - 83
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Web Site: www.hittite.com
M I C R O W A V E C O R P O R A T I O N
F
EBRUARY
2001
'99
new!
7
S
WITCHES
SP4T
SMT
-25
-20
-15
-10
-5
0
0
1
2
3
4
5
6
7
8
RETURN
L
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SS
(
d
B)
FREQUENCY (GHz)
RFC
RF1-4 On
RF1-4 Off
HMC222C12 SP4T SWITCH NON-REFLECTIVE DC TO 6.0 GHz
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0
1
2
3
4
5
6
7
8
I
N
SERTI
ON
LOSS
(
d
B)
FREQUENCY (GHz)
-40 C
+25 C
+85 C
-70
-60
-50
-40
-30
-20
-10
0
0
1
2
3
4
5
6
7
8
IS
OL
A
T
ION
(
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)
FREQUENCY (GHz)
RF1 & RF4
RF2 & RF3
Insertion Loss
Isolation
Return Loss
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COM
P
RESSI
ON
POI
N
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(
dBm
)
FREQUENCY (GHz)
1 dB Compression Point
0.1 dB Compression Point
0.1 and 1 dB Input Compression Point
HMC222C12
V
02.0101
7 - 84
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Web Site: www.hittite.com
M I C R O W A V E C O R P O R A T I O N
F
EBRUARY
2001
'99
new!
S
WITCHES
7
SP4T
SMT
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Absolute Maximum Ratings
Truth Table
TTL/CMOS Control Voltages
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HMC222C12 SP4T SWITCH NON-REFLECTIVE DC TO 6.0 GHz
Functional Diagram
NOTE:
1) DC blocking capacitors are
required at ports RFC and RF1, 2, 3, 4.
HMC222C12
V
02.0101
7 - 85
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Web Site: www.hittite.com
M I C R O W A V E C O R P O R A T I O N
F
EBRUARY
2001
'99
new!
7
S
WITCHES
SP4T
SMT
Outline Drawing
HMC222C12 SP4T SWITCH NON-REFLECTIVE DC TO 6.0 GHz
1.
MATERIAL:
A) PACKAGE BODY & COVER : WHITE ALUMINA (92%)
B) LEADS: KOVAR (TM) OR ASTM F-15 (ALLOY 42) EQUIVALENT
2 .
PLATING (LEADS): ELECTROLYTIC GOLD 25 MICROINCHES. MINIMUM, OVER ELECTROLYTIC NICKEL 100 TO 250 MICROINCHES
3.
DIMENSIONS ARE IN INCHES (MILLIMETERS), UNLESS OTHERWISE SPECIFIED TOL. ARE 0.005.
4.
ALL UNLABELED LEADS ARE GROUND.
HMC222C12
V
02.0101
7 - 86
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Web Site: www.hittite.com
M I C R O W A V E C O R P O R A T I O N
F
EBRUARY
2001
'99
new!
S
WITCHES
7
SP4T
SMT
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*
The circuit board used in the final 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 and exposed ground
paddle 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.
Eval Board Layout
(Top View)
List of Material
HMC222C12 SP4T SWITCH NON-REFLECTIVE DC TO 6.0 GHz
HMC222C12
V
02.0101
7 - 87
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Web Site: www.hittite.com
M I C R O W A V E C O R P O R A T I O N
F
EBRUARY
2001
'99
new!
7
S
WITCHES
SP4T
SMT
HMC222C12 SP4T SWITCH NON-REFLECTIVE DC TO 6.0 GHz
NOTES:
HMC222C12
V
02.0101
PDF 
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