HMC641LC4
v01.0514
GaAs MMIC SP4T NON-REFLECTIVE
SWITCH, DC - 20 GHz
Typical Applications
The HMC641LC4 is ideal for:
Features
Broadband Performance: DC - 20 GHz
High Isolation: 42 dB @ 12 GHz
Low Insertion Loss: 2.1 dB @ 12 GHz
Integrated 2:4 TTL Decoder
24 Lead 4x4mm SMT Package: 16mm²
SWITCHES - SP4T - SMT
• Telecom Infrastructure
• Microwave Radio & VSAT
• Military & Space Hybrids
• Test Instrumentation
• SATCOM & Sensors
Functional Diagram
General Description
The HMC641LC4 is a broadband non-reflective
GaAs pHEMT SP4T switch in a compact 4x4 mm
ceramic package. Covering DC to 20 GHz, this switch
offers high isolation, low insertion loss and on-chip
termination of isolated ports. This switch also includes
an on board binary decoder circuit which reduces
the number of required logic control lines from four
to two. The HMC641LC4 is controlled with 0/ -5V
logic, exhibits fast switching speed and consumes
much less DC current than pin diode based solutions.
The HMC641LC4 is also available in die form as the
HMC641.
Electrical Specifications,
T
A
= +25° C, With 0/-5V Control, Vss = -5V, 50 Ohm System
Parameter
Insertion Loss
Isolation (RFC to RF1 - RF4)
Return Loss
Return Loss
Input Power for 1 dB Compression
Input Third Order Intercept
(Two-Tone Input Power= +14 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
“On State”
“Off State”
Frequency
DC - 12 GHz
DC - 20 GHz
DC - 12 GHz
DC - 20 GHz
DC - 12 GHz
DC - 20 GHz
DC - 20 GHz
0.05 - 0.25 GHz
0.25- 20 GHz
0.05 - 0.25 GHz
0.25 - 20 GHz
DC - 20 GHz
10
20
30
30
Min.
Typ.
1.6
2.3
42
40
18
17
13
15
23
30
39
15
88
Max.
2.8
3.5
Units
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
1
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC641LC4
v01.0514
GaAs MMIC SP4T NON-REFLECTIVE
SWITCH, DC - 20 GHz
Insertion Loss vs. Temperature
0
Isolation
0
INSERTION LOSS (dB)
-1
-20
-2
-30
-40
-50
-60
-70
-3
+25 C
+85 C
-40 C
-4
-5
0
4
8
12
16
20
24
-80
0
4
8
12
16
20
24
FREQUENCY (GHz)
FREQUENCY (GHz)
Return Loss
0
-5
RFC
RF1,2,3,4 On
RF1,2,3,4 Off
1 dB Input Compression Point
30
INPUT COMPRESSION POINT (dBm)
RETURN LOSS (dB)
-10
-15
-20
-25
-30
-35
0
4
25
20
15
10
8
12
16
20
24
0
2
4
6
8
10
12
14
16
18
20
22
FREQUENCY (GHz)
FREQUENCY (GHz)
Input Third Order Intercept
Point @ 0 dBm Tone Power
50
45
40
IP3 (dBm)
35
30
25
20
15
0
5
10
15
20
FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
SWITCHES - SP4T - SMT
2
-10
RF1
RF2
RF3
RF4
ISOLATION (dB)
HMC641LC4
v01.0514
GaAs MMIC SP4T NON-REFLECTIVE
SWITCH, DC - 20 GHz
Absolute Maximum Ratings
Bias Voltage (Vss)
-7V
Vss -0.5V to +1V
+24 dBm
150 °C
199 °C/W
219 °C/W
-65 to +150 °C
-40 to +85 °C
Class 1A
Vss
(Vdc)
-5
A
High
Low
High
Low
Truth Table
Control Input
B
High
High
Low
Low
Signal Path State
RFC to:
RF1
RF2
RF3
RF4
SWITCHES - SP4T - SMT
Control Voltage Range (A & B)
Maximum Input Power
Channel Temperature
Thermal Resistance
Channel to die bottom (Insertion Loss Path)
Thermal Resistance
Channel to die bottom (Terminated Path)
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
Bias Voltage & Current
Vss Range= -5.0 Vdc ±10%
Iss (Typ)
(mA)
1.7
Iss (Max)
(mA)
5.0
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
TTL/CMOS Control Voltages
State
Low
High
Bias Condition
-2.5V to 0V @ 30 µA Typ.
-5V to -3.8V @ 1.7 µA Typ.
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC641LC4
v01.0514
GaAs MMIC SP4T NON-REFLECTIVE
SWITCH, DC - 20 GHz
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING: 30-80 MICROINCHES GOLD OVER
50 MICROINCHES MINIMUM NICKEL.
3. DIMENSIONS ARE IN INCHES [MILLIMETERS].
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM -C-
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
Package Information
Part Number
HMC641LC4
Package Body Material
Alumina, White
Lead Finish
Gold over Nickel
MSL Rating
MSL3
[1]
Package Marking
[2]
H641
XXXX
[1] Max peak reflow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
SWITCHES - SP4T - SMT
4
HMC641LC4
v01.0514
GaAs MMIC SP4T NON-REFLECTIVE
SWITCH, DC - 20 GHz
Pin Descriptions
Pin Number
Function
N/C
Description
These pins are not connected internally; however, all data
shown herein was measured with these pins connected to
RF/DC ground externally.
These pins and the exposed ground paddle
must be connected to RF/DC ground.
These pads are DC coupled and matched to
50 Ohms. Blocking capacitors are required if
RF line potential is not equal to 0V.
Interface Schematic
SWITCHES - SP4T - SMT
1, 5, 6, 13, 18
2, 4, 7, 9, 10, 12,
17, 19, 21, 22, 24
Ground Paddle
3, 8, 11, 20, 23
GND
RFC, RF1, RF2,
RF3, RF4
14
Vss
Supply Voltage -5 Vdc ± 10%.
15
CTLB
See Truth Table and Control Voltage Table.
16
CTLA
See Truth Table and Control Voltage Table.
5
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
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