SWITCHES - SMT
10
10 - 300
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
HMC544 / 544E
GaAs MMIC T/R SWITCH,
DC - 4 GHz
v00.0206
General Description
Features
Functional Diagram
Very Low Insertion Loss: 0.2 dB @ 1.0 GHz
High Input P1dB: +39 dBm
High Input IP3: +55 dBm
Positive Control: 0/+3V to 0/+5V
Compact SOT26 SMT Package
Electrical Speci cations, TA = +25° C, Vctl = 0/+3 Vdc, 50 Ohm System
Typical Applications
The HMC544 / HMC544E is ideal for:
• Cellular/PCS/3G Infrastructure
• Basestations & Repeaters
• WLAN, WiMAX and WiBro
• Microwave and Fixed Wireless Radios
The HMC544 & HMC544E are low cost SPDT swit-
ches in 6-lead SOT26 packages for use in transmit-
receive applications which require very low insertion
loss at medium power levels. These devices can
control signals from DC to 4.0 GHz and are especially
suited for 450, 900, 1900, 2300, and 2700 MHz
applications with <0.5 dB insertion loss. This GaAs
PHEMT design provides exceptional linearity
performance of +36 dBm 1dB compression point and
+55 dBm third order intercept at +3 volt bias. RF1
and RF2 are re ective opens when “Off”. On-chip
circuitry allows positive control operation at very low
DC current.
Parameter Frequency Min. Typ. Max. Units
Insertion Loss
DC - 1.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
DC - 4.0 GHz
0.25
0.4
0.5
0.7
0.5
0.7
0.8
1.0
dB
dB
dB
dB
Isolation
DC - 1.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
DC - 4.0 GHz
18
10
9
8
23
14
13
12
dB
dB
dB
dB
Return Loss DC - 4.0 GHz 32 dB
Input Power for 1 dB Compression 0/+5V Control
0/+3V Control 0.3 - 4.0 GHz 36
33
39
36
dBm
dBm
Input Third Order Intercept
(Two-Tone Input Power = +27 dBm Each Tone) 0.3 - 4.0 GHz 55 dBm
Switching Characteristics DC - 4.0 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
70
140
ns
ns
SWITCHES - SMT
10
10 - 301
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
HMC544 / 544E
Insertion Loss Return Loss
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
+25C
+85C
-40C
INSERTION LOSS (dB)
FREQUENCY (GHz)
GaAs MMIC T/R SWITCH,
DC - 4 GHz
v00.0206
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RFC
RF1, RF2
RETURN LOSS (dB)
FREQUENCY (GHz)
Input IP3 vs. Temperature, Vctl = 0/+3V Input IP3 vs. Vctl
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RF1
RF2
ISOLATION (dB)
FREQUENCY (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RF1 ON
RF2 ON
ISOLATION (dB)
FREQUENCY (GHz)
Isolation Between Ports RFC & RF1 / RF2 Isolation Between Ports RF1 & RF2
40
45
50
55
60
65
0 0.5 1 1.5 2 2.5 3 3.5 4
+25C
+85C
-40C
INPUT IP3 (dBm)
FREQUENCY (GHz)
40
45
50
55
60
65
0 0.5 1 1.5 2 2.5 3 3.5 4
+3V
+5V
INPUT IP3 (dBm)
FREQUENCY (GHz)
SWITCHES - SMT
10
10 - 302
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
HMC544 / 544E
Input P1dB vs. Temperature, Vctl = 0/+3V Compression vs. Vctl
20
25
30
35
40
45
0 0.5 1 1.5 2 2.5 3 3.5 4
+25C
+85C
-40C
INPUT P1dB (dBm)
FREQUENCY (GHz)
GaAs MMIC T/R SWITCH,
DC - 4.0 GHz
v00.0206
20
25
30
35
40
45
0 0.5 1 1.5 2 2.5 3 3.5 4
P0.1dB +3V
P0.1dB +5V
P1dB +3V
P1dB +5V
INPUT P0.1dB & P1dB (dBm)
FREQUENCY (GHz)
Control Voltages
State Bias Condition
Low 0 to 0.2 Vdc @ 1 µA Typical
High +3 Vdc @ 0.5 µA Typical to
+5 Vdc @ 2 µA Typical (±0.2 Vdc)
Control Input Signal Path
A B RFC to RF1 RFC to RF2
Low High On Off
High Low Off On
Truth Table
SWITCHES - SMT
10
10 - 303
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
Outline Drawing
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC544 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H544
XXXX
HMC544E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 544E
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS].
3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
5. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
HMC544 / 544E
GaAs MMIC T/R SWITCH,
DC - 4.0 GHz
v00.0206
Absolute Maximum Ratings
RF Input Power (Vctl = 0/+5V) +39 dBm
Control Voltage Range (A & B) -0.2 to +12 Vdc
Hot Switch Power Level
(Vctl = 0/+5V) +39 dBm
Channel Temperature 150 °C
Continuous Pdiss (T= 85 °C)
(derate 7.14 mW/ °C above 85°C) 0.465 W
Thermal Resistance 140 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
DC blocks are required at ports RFC, RF1 and RF2.
SWITCHES - SMT
10
10 - 304
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
HMC544 / 544E
GaAs MMIC T/R SWITCH,
DC - 4.0 GHz
v00.0206
Typical Application Circuit
Pin Descriptions
Notes:
1. Set logic gate Vdd = +3V to +5V and use HCT series logic to provide a TTL driver interface.
2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd of +3V to +5V applied to the CMOS logic gates.
3. DC Blocking capacitors are required for each RF port as shown. Capacitor value determines lowest frequency of operation.
Pin Number Function Description Interface Schematic
1, 3, 5 RF2, RF1, RFC These pins are DC coupled and matched to 50 Ohms.
Blocking capacitors are required.
2 GND This pin must be connected to RF/DC ground.
4 B See truth and control voltage tables.
6 A See truth and control voltage tables.
SWITCHES - SMT
10
10 - 305
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
Evaluation Circuit Board
HMC544 / 544E
GaAs MMIC T/R SWITCH,
DC - 4.0 GHz
v00.0206
The circuit board used in the  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 should be connected directly to the ground
plane similar to that shown above. The evalua-
tion circuit board shown above is available from
Hittite Microwave Corporation upon request.
List of Materials for Evaluation PCB 101675 [1]
Item Description
J1 - J5 PCB Mount SMA RF Connector
J6 - J8 DC Pin
C1 - C5 330 pF capacitor, 0402 Pkg.
U1 HMC544 / HMC544E SPDT Switch
PCB [2] 101659 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350