HMC348LP3
/
348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Features
High Isolation: >80 dB @ 5 MHz (50 Ohm)
>55 dB @ 1 GHz (50 Ohm)
“All Off” Isolation State
Non-Reflective Design, 75 Ohm Terminations
3x3 mm SMT Package
Typical Applications
The HMC348LP3 / HMC348LP3E is ideal for:
• 75 Ohm Systems
CATV Signal Distribution, Cable Modem
Headend & DBS IF Switching
• 50 Ohm Systems
Basestation Infrastructure & Test Equipment
8
SWITCHES - SMT
Functional Diagram
General Description
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.
Electrical Specifications,
T
A
= +25° C, With 0/+5V Control, 50 Ohm System
Parameter
Insertion Loss
Frequency
DC - 1000 MHz
DC - 2500 MHz
DC - 250 MHz
DC - 750 MHz
DC - 1000 MHz
DC - 2000 MHz
DC - 2500 MHz
“On State”
“Off State”
DC - 2500 MHz
DC - 1000 MHz
DC - 2500 MHz
50 MHz
1000 MHz
50 MHz
1000 MHz
2500 MHz
50 MHz
1000 MHz
2500 MHz
DC - 2500 MHz
63
53
50
47
45
15
9
8
20
25
Min.
Typ.
0.6
0.7
68
58
55
52
50
20
12
11
23
28
43
48
51
72
89
80
25
600
Max.
0.9
1.0
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
ns
ns
Isolation
Return Loss
Return Loss RF1, RF2
Input Power for 1 dB Compression
Input Third Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
Input Second Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
8 - 214
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
0
Insertion Loss, 75 Ohm System
0
INSERTION LOSS (dB)
-0.5
INSERTION LOSS (dB)
-0.5
-1
-1
-1.5
+25C
+85C
-40C
-1.5
8
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
-2
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
-2
Isolation, 50 Ohm System
0
-10
-20
ISOLATION (dB)
-30
-40
-50
-60
-70
-80
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
RF1
RF2
ALL OFF
Isolation, 75 Ohm System
0
-10
-20
ISOLATION (dB)
-30
-40
-50
-60
-70
-80
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
Return Loss, 50 Ohm System
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
-35
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
RFC
RF1, RF2 ON
RF1, RF2 OFF
Return Loss, 75 Ohm System
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
-35
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
RFC
RF1, RF2 ON
RF1, RF2 OFF
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 - 21
SWITCHES - SMT
HMC348LP3
/
348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Input Compression Point, 50 Ohm System
32
INPUT COMPRESSION POINT (dBm)
30
28
26
24
22
20
18
16
14
12
10
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
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
Absolute Maximum Ratings
Bias Voltage Range (Vdd)
RF Input Power
Control Voltage Range (A & B)
Channel Temperature
Continuous Pdiss (T = 85 °C)
(derate 4 mW/°C above 85 °C)
Thermal Resistance
(Insertion Loss Path)
Thermal Resistance
(Terminated Path)
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
+7.0 Vdc
+30 dBm
+0.5V to Vdd + 1.0 Vdc
150 °C
0.3 W
104 °C/W
240 °C/W
-65 to +150 °C
-40 to +85 °C
Class 1A
8
SWITCHES - SMT
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Bias Voltage & Current
Vdd Range = +5.0 Vdc ±10%
Vdd
(Vdc)
+5.0
Idd (Typ.)
(mA)
1.1
Idd (Max.)
(mA)
2.2
Truth Table
Control Input
A
High
Low
Low
B
Low
High
Low
Signal Path State
RFC to RF1
On
Off
Off
RFC to RF2
Off
On
Off
Control Voltages
State
Low
High
Bias Condition
0 to +0.8V @ 5 uA Typical
+2.0 to +5.0 Vdc @ 35 uA Typical
8 - 216
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
Outline Drawing
8
SWITCHES - SMT
348
XXXX
348
XXXX
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.
Package Information
Part Number
HMC348LP3
HMC348LP3E
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]
[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 - 21
HMC348LP3
/
348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
Pin Descriptions
Pin Number
1
Function
Vdd
Description
Supply Voltage +5V ±10%
Interface Schematic
2, 4, 5, 6,
9, 12, 15,16
N/C
These pins should be connected to PCB RF ground
to maximize isolation.
These pins are DC coupled and matched to 75 Ohms.
Blocking capacitors are required.
External capacitors to ground are required.
Select value for optimal isolation below 500 MHz.
8
SWITCHES - SMT
3, 7, 14
RFC, RF1, RF2
8, 13
ACG1, ACG2
10
B
See truth table and control voltage table.
11
A
See truth table and control voltage table.
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.
8 - 218
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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