HITTITE HMC944LC4

HMC944LC4
v02.1110
GaAs MMIC SP4T REFLECTIVE
SWITCH, 23 - 30 GHz
Typical Applications
Features
The HMC944LC4 is ideal for:
Broadband Performance: 23 - 30 GHz
• Telecom Infrastructure
High Isolation: 35 dB
• Microwave Radio & VSAT
Insertion Loss: 2.8 dB
• Military & Space Hybrids
24 Lead 4x4mm SMT Package: 16mm²
• Test Instrumentation
• SATCOM & Sensors
General Description
Functional Diagram
The HMC944LC4 is a broadband reflective GaAs
MESFET SP4T switch in a compact 4x4 mm ceramic
package. Covering 23 to 30 GHz, this switch offers
high isolation and low insertion loss. The HMC944LC4
is controlled with 0/ -3V logic, exhibits fast switching
speed and consumes much less DC current than pin
diode based solutions. With its compact form factor,
the HMC944LC4 is ideal for microwave radio as well as
SATCOM and sensor applications. The HMC944LC4
is housed in a leadless 4x4 mm SMT package which
is compatible with surface mount manufacturing techniques.
Switches - SPDT - SMT
11
Electrical Specifications, TA = +25° C, With 0/-3V Control, 50 Ohm System
Parameter
Insertion Loss
Frequency
(RFC to RF1, RF4)
(RFC to RF2, RF3)
Isolation (RFIN to RF1 - RF4)
Min.
23 - 30 GHz
23 - 30 GHz
30
Typ.
Max.
Units
2.8
3.5
4
5
dB
dB
35
dB
Return Loss [1]
“On State”
23 - 30 GHz
10
dB
Return Loss [2]
“Off State”
23 - 30 GHz
4
dB
Input Power for 0.1 dB Compression
23 - 30 GHz
17
dBm
Input Third Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone)
23 - 30 GHz
30
dBm
23 - 30 GHz
23 - 30 GHz
15
53
ns
ns
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
[1] Return loss with switch path in insertion loss state.
[2] Return loss with switch path in isolation state.
11 - 1
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected]
HMC944LC4
v02.1110
GaAs MMIC SP4T REFLECTIVE
SWITCH, 23 - 30 GHz
Insertion Loss RFIN to RF2, RF3
vs. Temperature
0
0
-1
-1
INSERTION LOSS (dB)
-2
-3
+25 C
+85 C
-40 C
-4
-2
-3
+25 C
+85 C
-40 C
-4
-5
-5
23
24
25
26
27
28
29
30
23
24
25
FREQUENCY (GHz)
0
0
-10
-5
-20
-10
ISOLATION (dB)
ISOLATION (dB)
27
28
29
30
11
Return Loss On State [2]
Isolation [1]
-30
-40
RF1
RF2
RF3
RF4
-50
-60
-15
-20
-25
RFC
RF1
RF2
RF3
RF4
-30
-70
-35
-80
-40
23
24
25
26
27
28
29
30
23
24
25
FREQUENCY (GHz)
26
27
28
29
30
29
30
FREQUENCY (GHz)
0.1 dB Input Compression Point
Return Loss Off State
30
INPUT COMPRESSION POINT (dBm)
0
-5
ISOLATION (dB)
26
FREQUENCY (GHz)
-10
RFC
RF1
RF2
RF3
RF4
-15
25
Switches - SPDT - SMT
INSERTION LOSS (dB)
Insertion Loss RFIN to RF1, RF4
vs. Temperature
20
15
10
-20
23
24
25
26
27
28
FREQUENCY (GHz)
29
30
23
24
25
26
27
28
FREQUENCY (GHz)
[1] Return loss with switch path in insertion loss state.
[2] Return loss with switch path in isolation state.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected]
11 - 2
HMC944LC4
v02.1110
GaAs MMIC SP4T REFLECTIVE
SWITCH, 23 - 30 GHz
Absolute Maximum Ratings
Bias Voltage & Current
Control Voltage Range
(VC1, VC2, VC3, VC4)
<+2V and >-5V
Maximum Input Power
2W (33 dBm)
VC2 = -3V
IC2 <10 µA
Channel Temperature
150 °C
VC3 = -3V
IC3 <10 µA
Thermal Resistance
Channel to die bottom (Insertion Loss Path)
12 °C/W
VC4 = -3V
IC4 <10 µA
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
ESD Sensitivity (HBM)
Class 1B
IC (µA)
IC1 <10 µA
Truth Table
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
11
Switches - SPDT - SMT
VC (V)
VC1 = -3V
VC1
VC2
VC3
VC4
-3V
0V
0V
0V
RFIN to:
RF1
0V
-3V
0V
0V
RF2
0V
0V
-3V
0V
RF3
0V
0V
0V
-3V
RF4
Control Voltages
State
Bias Condition
Low
+1V to -0.25V
High
-2.7V to -5V, < 10 µA
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 -C6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND.
7. CLASSIFIED AS MOISTURE SENSITIVITY LEVEL (MSL) 1.
11 - 3
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected]
HMC944LC4
v02.1110
GaAs MMIC SP4T REFLECTIVE
SWITCH, 23 - 30 GHz
Pin Descriptions
Pin Number
Function
Description
1, 2, 6, 8, 23
N/C
These pins are not connected internally; however, all data
shown herein was measured with these pins connected to
RF/DC ground externally.
3, 5, 9, 11, 13, 15,
16, 18, 20, 22
GND
These pins and the exposed ground paddle
must be connected to RF/DC ground.
4, 10, 14, 17, 21
RIN, RF1, RF2,
RF3, RF4
These pads are DC coupled (to GND)
and matched to 50 Ohms.
7, 12, 19, 24
VC1, VC2,
VC3, VC4
See Truth Table
Interface Schematic
Evaluation PCB
Switches - SPDT - SMT
11
List of Materials for Evaluation PCB 128253 [1]
Item
Description
J1 - J5
PCB Mount K Connector
C6 - C9
1000 pF Capacitor, 0402 Pkg.
U1
HMC944LC4 Switch
PCB [2]
128251 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350 or Arlon FR4
The circuit board used in the application should use
RF circuit design techniques. Signal lines should have
50 Ohm impedance while the package ground leads
and exposed paddle should be connected directly to
the ground plane similar to that shown. A sufficient
number of via holes should be used to connect the
top and bottom ground planes. The evaluation board
should be mounted to an appropriate heat sink. The
evaluation circuit board shown is available from Hittite
upon request.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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 [email protected]
11 - 4