查询HMC234C8供应商
14
MICROWAVE CORPORATION
Typical Applications
The HMC234C8 is ideal for:
• Telecom Infrastructure
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Test Instrumentation
Functional Diagram
v02.1203
HMC234C8
GaAs MMIC SMT HIGH ISOLATION
SPDT SWITCH, DC - 8.0 GHz
Features
Isolation: 52 dB @ 2.0 GHz
40 dB @ 6.0 GHz
Insertion Loss: 1.6 dB Typical @ 6.0 GHz
Non-Refl ective Design
Surface Mount Ceramic Package
General Description
The HMC234C8 is a broadband high isolation
non-refl ective GaAs MESFET SPDT switch in a
non-hermetic surface mount ceramic package.
Covering DC to 8.0 GHz, the switch features >52
dB isolation up to 2 GHz and >38 dB isolation
up to 8.0 GHz. The switch operates using
complementary negative control voltage logic
lines of -5/0V and requires no bias supply. This
product is an excellent pin-for-pin replacement to
the SMDI SSW124.
Electrical Specifi cations, T
Parameter Frequency Min. Typ. Max. Units
Insertion Loss
Isolation
SWITCHES - SMT
Return Loss “On State”
Return Loss RF1, RF2 “Off State”
Input Power for 1 dB Compression 0.5 - 8.0 GHz 22 26 dBm
Input Third Order Intercept
(Two-Tone Input Power= +7 dBm Each Tone, 1 MHz Tone Separation)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
14 - 112
= +25° C, With 0/-5V Control, 50 Ohm System
A
DC - 2.0 GHz
DC - 6.0 GHz
DC - 8.0 GHz
DC - 2.0 GHz
DC - 6.0 GHz
DC - 8.0 GHz
DC - 2.0 GHz
DC - 8.0 GHz
DC - 2.0 GHz
DC - 6.0 GHz
DC - 8.0 GHz
0.5 - 8.0 GHz 40 46 dBm
DC - 8.0 GHz 3
47
35
33
1.4
1.6
2.1
52
40
38
15
12
14
1.7
1.9
2.4
9
6
5
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
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
v02.1203
HMC234C8
MICROWAVE CORPORATION
GaAs MMIC SMT HIGH ISOLATION
SPDT SWITCH, DC - 8.0 GHz
GaAs MMIC SUB-HARMONICALLY PUMPED MIXER 17 - 25 GHz
Insertion Loss Isolation
0
-1
-2
-3
+ 25C
INSERTION LOSS (dB)
-4
-5
01234 5678
+ 85C
- 40C
FREQUENCY (GHz)
Return Loss 0.1 and 1 dB Input Compression Point
0
RFC
-5
-10
RF1, RF2 ON
RF1, RF2 OFF
0
-10
-20
-30
-40
-50
ISOLATION (dB)
-60
-70
-80
012345678
35
30
RF1
RF2
FREQUENCY (GHz)
1 dB Compression Point
0.1 dB Compression Point
14
-15
-20
RETURN LOSS (dB)
-25
-30
012345678
FREQUENCY (GHz)
Input Third Order Intercept Point
60
55
50
45
40
INPUT IP3 (dBm)
35
30
012345678
+ 25C
+ 85C
- 40C
FREQUENCY (GHz)
25
INPUT P1dB (dBm)
20
15
012345678
FREQUENCY (GHz)
SWITCHES - SMT
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 - 113
MICROWAVE CORPORATION
v02.1203
HMC234C8
GaAs MMIC SMT HIGH ISOLATION
SPDT SWITCH, DC - 8.0 GHz
14
Control Voltages
State Bias Condition
Low 0 to -0.2V @ 10 uA Max.
High -5V @ 10 uA Typ. to -7V @ 45 uA Typ.
Absolute Maximum Ratings
RF Input Power (Vctl= -5V)
(0.5 - 8 GHz)
Control Voltage Range (A & B) +1.0V to -7.5 Vdc
Channel Temperature 150 °C
Thermal Resistance 94 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
+30 dBm (@ +50 °C)
Outline Drawing
Truth Table
Control Input Signal Path State
A B RFC to RF1 RFC to RF2
High Low ON OFF
Low High OFF ON
Caution: Do not “Hot Switch” power levels greater than
+26 dBm (Vctl = 0/-5 Vdc).
SWITCHES - SMT
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NOTES:
1. PACKAGE BODY MATERIAL: WHITE ALUMINA 92%
2. LEAD, PACKAGE BOTTOM MATERIAL: COPPER
3. PLATING: ELECTROLYTIC GOLD 100-200 MICROINCHES, OVER
ELECTROLYTIC NICKEL 100-250 MICROINCHES.
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. PACKAGE LENGTH AND WIDTH DIMENSIONS DO NOT INCLUDE LID
SEAL PROTRUSION .005 PER SIDE.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
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
MICROWAVE CORPORATION
Suggested Driver Circuit
Pin Descriptions
v02.1203
HMC234C8
GaAs MMIC SMT HIGH ISOLATION
SPDT SWITCH, DC - 8.0 GHz
Pin Number Function Description Interface Schematic
1, 3, 4 GND
2, 5, 8 RFC, RF1, RF2
6 B See truth table and control voltage table.
7
A See truth table and control voltage table.
This pin is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if RF line potential is not equal to 0V.
Package bottom must also
be connected to PCB RF ground.
14
SWITCHES - SMT
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 - 115
MICROWAVE CORPORATION
Evaluation PCB
v02.1203
HMC234C8
GaAs MMIC SMT HIGH ISOLATION
SPDT SWITCH, DC - 8.0 GHz
14
List of Material
Item Description
J1 - J3 PC Mount SMA RF Connector
J4 - J6 DC Pin
U1 HMC234C8 SPDT Switch
PCB* 105707 Evaluation PCB
SWITCHES - SMT
* Circuit Board Material: Rogers 4350
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 impedance and
the package ground leads and package bottom 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.
14 - 116
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
MICROWAVE CORPORATION
Notes:
v02.1203
HMC234C8
GaAs MMIC SMT HIGH ISOLATION
SPDT SWITCH, DC - 8.0 GHz
14
SWITCHES - SMT
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
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