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HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Typical Applications
Features
The HMC348LP3 / HMC348LP3E is ideal for:
High Isolation: >80 dB @ 5 MHz (50 Ohm)
>55 dB @ 1 GHz (50 Ohm)
• 75 Ohm Systems
CATV Signal Distribution, Cable Modem
Headend & DBS IF Switching
• 50 Ohm Systems
Basestation Infrastructure & Test Equipment
“All Off” Isolation State
Non-Reflective Design, 75 Ohm Terminations
TE
3x3 mm SMT Package
General Description
Functional Diagram
The HMC348LP3 & HMC348LP3E are non-reflective
GaAs MESFET SPDT switches in low cost leadless
QFN surface mount plastic packages ideal for CATV
applications. Covering DC to 2.5 GHz, the switch offers
high isolation, low insertion loss, integrated 75 Ohm
terminations and an “all off” state. The switch features
>80 dB isolation at 5 MHz and >55 dB isolation up to
1 GHz. The switch operates using complementary
positive control voltage logic lines of +5/0V and
requires a +5V bias supply (Vdd). This switch offers
excellent performance in both 50 Ohm & 75 Ohm
systems for either SPDT or SPST functions.
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SWITCHES - SMT
10
Electrical Specifi cations, TA = +25° C, With 0/+5V Control, 50 Ohm System
B
Parameter
Min.
Typ.
Max.
Units
0.6
0.7
0.9
1.0
dB
dB
Isolation
DC - 250 MHz
DC - 750 MHz
DC - 1000 MHz
DC - 2000 MHz
DC - 2500 MHz
63
53
50
47
45
68
58
55
52
50
dB
dB
dB
dB
dB
O
Insertion Loss
Return Loss
“On State”
DC - 2500 MHz
15
20
dB
Return Loss RF1, RF2
“Off State”
DC - 1000 MHz
DC - 2500 MHz
9
8
12
11
dB
dB
Input Power for 1 dB Compression
50 MHz
1000 MHz
20
25
23
28
dBm
dBm
Input Third Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
50 MHz
1000 MHz
2500 MHz
43
48
51
dBm
dBm
dBm
Input Second Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
50 MHz
1000 MHz
2500 MHz
72
89
80
dBm
dBm
dBm
DC - 2500 MHz
25
600
ns
ns
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
10 - 232
Frequency
DC - 1000 MHz
DC - 2500 MHz
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
HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Insertion Loss, 50 Ohm System
Insertion Loss, 75 Ohm System
INSERTION LOSS (dB)
0
-0.5
+25C
+85C
-40C
-1.5
-1
-1.5
-2
0
0.5
1
1.5
2
2.5
0
0.5
Isolation, 50 Ohm System
0
2
2.5
10
0
-10
-20
-20
RF1
RF2
ALL OFF
-40
-50
-70
-80
0
0.5
SO
-30
-60
1
1.5
2
-30
-40
-50
-60
-70
-80
2.5
0
0.5
B
FREQUENCY (GHz)
Return Loss, 50 Ohm System
1
1.5
2
2.5
2
2.5
FREQUENCY (GHz)
Return Loss, 75 Ohm System
0
RFC
RF1, RF2 ON
RF1, RF2 OFF
-5
RETURN LOSS (dB)
O
-5
RETURN LOSS (dB)
1.5
Isolation, 75 Ohm System
-10
0
1
FREQUENCY (GHz)
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FREQUENCY (GHz)
SWITCHES - SMT
-2
ISOLATION (dB)
-0.5
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-1
ISOLATION (dB)
INSERTION LOSS (dB)
0
-10
-15
-20
-25
-30
RFC
RF1, RF2 ON
RF1, RF2 OFF
-10
-15
-20
-25
-30
-35
-35
0
0.5
1
1.5
FREQUENCY (GHz)
2
2.5
0
0.5
1
1.5
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
10 - 233
HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Input Compression Point, 50 Ohm System
Absolute Maximum Ratings
Bias Voltage Range (Vdd)
30
+7.0 Vdc
RF Input Power
+30 dBm
Control Voltage Range (A & B)
+0.5V to Vdd + 1.0 Vdc
24
Channel Temperature
150 °C
22
Continuous Pdiss (T = 85 °C)
(derate 4 mW/°C above 85 °C)
0.3 W
28
26
20
18
TE
INPUT COMPRESSION POINT (dBm)
32
0.1 dB T=+25C
0.1 dB T=+85C
0.1 dB T= -40C
1 dB T=+25C
1 dB T=+85C
1 dB T= -40C
16
14
12
10
0
0.5
1
1.5
2
2.5
10
104 °C/W
Thermal Resistance
(Terminated Path)
240 °C/W
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
ESD Sensitivity (HBM)
Class 1A
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FREQUENCY (GHz)
Thermal Resistance
(Insertion Loss Path)
SWITCHES - SMT
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Bias Voltage & Current
+5.0
Control Input
SO
Vdd Range = +5.0 Vdc ±10%
Vdd
(Vdc)
Truth Table
Idd (Typ.)
(mA)
Idd (Max.)
(mA)
1.1
2.2
Signal Path State
A
B
RFC to RF1
RFC to RF2
High
Low
On
Off
Low
High
Off
On
Low
Low
Off
Off
State
Bias Condition
Low
0 to +0.8V @ 5 uA Typical
High
B
Control Voltages
O
+2.0 to +5.0 Vdc @ 35 uA Typical
10 - 234
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
HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
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.
SO
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.
Package Information
Part Number
Lead Finish
Low Stress Injection Molded Plastic
Sn/Pb Solder
MSL1
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL1
B
HMC348LP3
Package Body Material
HMC348LP3E
MSL Rating
Package Marking [3]
[1]
348
XXXX
[2]
348
XXXX
10
SWITCHES - SMT
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Outline Drawing
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[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
10 - 235
HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Pin Descriptions
Description
1
Vdd
Supply Voltage +5V ±10%
2, 4, 5, 6,
9, 12, 15,16
N/C
These pins should be connected to PCB RF ground
to maximize isolation.
3, 7, 14
RFC, RF1, RF2
These pins are DC coupled and matched to 75 Ohms.
Blocking capacitors are required.
8, 13
ACG1, ACG2
External capacitors to ground are required.
Select value for optimal isolation below 500 MHz.
10
B
See truth table and control voltage table.
11
A
Interface Schematic
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Function
See truth table and control voltage table.
SO
SWITCHES - SMT
10
Pin Number
O
B
Application Circuit
The value of capacitors C1 & C2 are critical for low frequency isolation performance below 500 MHz. 3300 pF 0402 size capacitors
are recommended for optimal isolation down to 5 MHz. If the frequency of operation is above 500 MHz then 100 pF to 300 pF 0402
capacitors will be sufficient.
10 - 236
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
HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
B
10
SWITCHES - SMT
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Evaluation PCB (50 Ohms)
List of Materials for Evaluation PCB 106343 [1]
Description
O
Item
J1 - J3
PCB Mount SMA RF Connector
J4 - J7
DC Pin
R1 - R2
100 Ohm Resistor, 0402 Pkg.
C1, C2, C4 - C7
3300 pF Capacitor, 0402 Pkg.
C3
4.7 uF Tantalum Capacitor
U1
HMC348LP3 / HMC348LP3E
SPDT Switch
PCB [2]
106255 Evaluation PCB
The circuit board used in the final 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.
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
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
10 - 237