HMC321LP4
/
321LP4E
v03.0805
GaAs MMIC SP8T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8.0 GHz
Typical Applications
This switch is suitable for usage in DC - 8.0 GHz 50-
Ohm or 75-Ohm systems:
•
Broadband
•
Fiber Optics
•
Switched Filter Banks
•
Wireless below 8 GHz
Features
Broadband Performance: DC - 8.0 GHz
High Isolation: >30 dB@ 6 GHz
Low Insertion Loss: 2.5 dB@ 6 GHz
Integrated Positve Supply 3:8 TTL Decoder
4x4 mm SMT Package
8
SWITCHES - SMT
Functional Diagram
General Description
The HMC321LP4 & HMC321LP4E are broadband non-
reflective GaAs MESFET SP8T switches in low cost
leadless surface mount packages. Covering DC to
8 GHz, this switch offers high isolation and low inser-
tion loss. This switch also includes an on board binary
decoder circuit which reduces the required logic con-
trol lines to three. The switch operates using a positive
control voltage of 0/+5 volts, and requires a fixed bias
of +5v. This switch is suitable for usage in 50-Ohm or
75-Ohm systems.
* DC blocking capacitors are required at ports RFC and
RF1, 2, 3, 4, 5, 6, 7, 8. Their value will determine the lowest
transmission frequency.
Electrical Specifications,
T
A
= +25° C, With 0/+5V Control, 50 Ohm System
Parameter
Insertion Loss
Frequency
DC - 2.0 GHz
DC - 4.0 GHz
DC - 8.0 GHz
DC - 2.0 GHz
DC - 4.0 GHz
DC - 6.0 GHz
DC - 8.0 GHz
“On State”
“Off State”
DC - 4.0 GHz
DC - 8.0 GHz
2.0 - 8.0 GHz
0.5 - 8.0 GHz
0.5 - 8.0 GHz
35
30
25
20
8
7
7
19
33
Min.
Typ.
2.3
2.5
2.7
40
35
30
25
12
10
12
23
40
50
150
Max.
2.7
2.9
3.1
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
ns
ns
Isolation
Return Loss
Return Loss (RF1 - RF8)
Input Power for 1 dB Compression
Input Third Order Intercept
(Two-tone Input Power = +7 dBm Each Tone, 1 MHz Spacing)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 8.0 GHz
8 - 160
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
HMC321LP4
/
321LP4E
v03.0805
GaAs MMIC SP8T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8.0 GHz
Insertion Loss vs. Temperature
0
Isolation
0
-10
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RF8
-1
INSERTION LOSS (dB)
ISOLATION (dB)
-20
-30
-40
-50
-60
-70
0
1
2
3
4
5
6
7
8
9
0
1
2
-2
-3
+25 C
-40 C
+85 C
8
3
4
5
6
7
8
9
FREQUENCY (GHz)
-4
-5
FREQUENCY (GHz)
Return Loss
0
0.1 and 1 dB Input Compression Point
30
INPUT COMPRESSION POINT (dBm)
-5
RETURN LOSS (dB)
25
-10
20
-15
RFC
RF1-8 ON
RF1-8 OFF
15
-20
0.1db Compression Point
1dB Compression Point
-25
0
1
2
3
4
5
6
7
8
9
FREQUENCY (GHz)
10
1
2
3
4
5
6
7
8
FREQUENCY (GHz)
Input Third Order Intercept Point
INPUT THIRD ORDER INTERCEPT (dBm)
50
45
40
35
30
1
2
3
4
5
6
7
8
FREQUENCY (GHz)
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
8 - 16
SWITCHES - SMT
HMC321LP4
/
321LP4E
v03.0805
GaAs MMIC SP8T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8.0 GHz
Truth Table
Control Input
Signal Path State
C
Low
Low
Low
Low
High
High
High
High
RFCOM to:
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RF8
Bias Voltage & Current
Vdd Range = +5.0 Vdc ± 10%
Vdd
(Vdc)
+5.0
Idd (Typ.)
(mA)
5.0
Idd (Max.)
(mA)
9.0
A
Low
High
Low
B
Low
Low
High
High
Low
Low
High
High
8
SWITCHES - SMT
High
Control Voltages
State
Low
High
Bias Condition
0 to +0.8 Vdc @ 5 uA Typical
+2.0 to +5.0 Vdc @ 25 uA Typical
Low
High
Low
High
Note:
DC blocking capacitors are required at ports RFC and
RF1, 2, 3, 4, 5, 6, 7, 8. Their value will determine the lowest
transmission frequency.
8 - 162
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
HMC321LP4
/
321LP4E
v03.0805
GaAs MMIC SP8T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8.0 GHz
Absolute Maximum Ratings
Bias Voltage Range (Port Vdd)
Control Voltage Range
(A, B, & C)
Storage Temperature
Operating Temperature
Maximum Input Power Vdd = +5V
ESD Sensitivity (HBM)
+7.0 Vdc
-0.5V to Vdd +1.0 Vdc
-65 to +150 °C
-40 to +85 °C
+26 dBm
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
8
SWITCHES - SMT
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Outline Drawing
Package Information
Part Number
HMC321LP4
HMC321LP4E
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
H321
XXXX
H321
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
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
8 - 16
HMC321LP4
/
321LP4E
v03.0805
GaAs MMIC SP8T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8.0 GHz
Pin Descriptions
Pin Number
1, 3, 5, 7,
12, 14, 16,
18, 21, 23
2, 4, 6,
13, 15, 17,
19, 22, 24
Function
Description
Package bottom has exposed metal paddle that
must also be connected to PCB RF ground.
Interface Schematic
GND
8
SWITCHES - SMT
RF1 - RF8
& RFC
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required.
8
VDD
Supply Voltage +5V ± 10%
9
CTLC
See truth table and control voltage table.
10
CTLB
See truth table and control voltage table.
11
CTLA
See truth table and control voltage table.
20
N/C
This pin should be connected to PCB RF
ground to maximize isolation.
8 - 164
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
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