MOSFET Switch. PE4249 Datasheet

PE4249 Switch. Datasheet pdf. Equivalent

Part PE4249
Description SPST CATV MOSFET Switch
Feature Product Description The PE4249 is a high-isolation MOSFET Switch designed for CATV applications, cov.
Manufacture Peregrine Semiconductor
Datasheet
Download PE4249 Datasheet



PE4249
Product Description
The PE4249 is a high-isolation MOSFET Switch
designed for CATV applications, covering a broad
frequency range from DC up to 1.3 GHz. This single-
supply SPST switch integrates a single-pin CMOS
control interface, and is non-reflective at port RF1 and
open reflective at port RF2 when commanded OFF. It
also provides low insertion loss with extremely low bias
requirements while operating on a single 3-volt supply.
In a typical CATV application, the high isolation PE4249
can replace bulky and expensive mechanical switches.
The PE4249 is manufactured in Peregrine’s patented
Ultra Thin Silicon (UTSi) CMOS process, offering the
performance of GaAs with the economy and integration
of conventional CMOS.
Figure 1. Functional Schematic Diagram
RF1
CTRL
75 Ω
RF2
PRODUCT SPECIFICATION
PE4249
SPST CATV MOSFET Switch
Features
75-ohm impedance switch
Non-reflective at RF1, open
reflective at RF2 when OFF
75-ohm (0.25 watt) termination
High isolation: 85 dB at 5 MHz,
60 dB at 1 GHz
Low insertion loss: 0.5 dB at
5 MHz, 0.8 dB at 1 GHz
High input IP2: >80 dBm
CMOS/TTL single-pin control
Single +3 volt supply operation
Extremely low bias: 33 µA @ 3V
Figure 2. Pin Configuration
VDD 1
GND 2
RF1 3
Exposed
Solder Pad
(bottom side)
6 RF2
5 GND
4 CTRL
Table 1. Electrical Specifications @ +25 °C (ZS = ZL = 75 )
Parameter
Condition
Minimum
Operating Frequency1
DC
Insertion Loss
DC – 50 MHz
1000 MHz
Isolation
DC – 50 MHz
1000 MHz
80
58
Return Loss
Input 1 dB Compression2,4
Input IP22
Input IP32
Video Feedthrough3
DC - 1000 MHz
1000 MHz
1000 MHz
1000 MHz
16
30
80
50
Switching Time
Notes:
1. Device linearity will begin to degrade below 1 MHz.
2. Measured in a 50 system.
3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth.
4. Note Absolute Maximum ratings in Table 3.
PEREGRINE SEMICONDUCTOR CORP. | http://www.peregrine-semi.com
Typical
0.5
0.8
85
60
20
33
2
Maximum
1300
0.65
1.0
15
Units
MHz
dB
dB
dB
dBm
dBm
dBm
mVpp
µs
Copyright Peregrine Semiconductor Corp. 2003
Page 1 of 7



PE4249
Table 2. Pin Descriptions
Pin Pin
No. Name
Description
1 VDD Nominal 3 V supply connection.1
2
GND
Ground connection. 3
3 RF1 RF port. 2
CMOS or TTL logic level:
4 CTRL
High = RF1 to RF2 signal path
Low = RF1 isolated from RF2
5 GND Ground connection. 3
6 RF2 RF port. 2
Notes: 1. A bypass capacitor should be placed as close as possible to
the pin.
2. Both RF pins must be DC blocked by an external capacitor
or held at 0 VDC.
3. The exposed pad must be soldered to the ground plane for
proper switch performance.
Table 3. Absolute Maximum Ratings
Symbol
VDD
VI
TST
TOP
PIN
VESD
Parameter/Condition
Power supply voltage
Voltage on CTRL input
Storage temperature
Operating temperature
Input power (50),
CTRL=1/CTRL=0
ESD voltage
(Human Body Model)
Min Max Unit
-0.3 4.0
V
-0.3 5.5
V
-65 150
-40 85
°C
°C
33/24 dBm
500 V
Table 4. DC Electrical Specifications @ 25 °C
Parameter
VDD Power Supply
IDD Power Supply Current
(VDD = 3V, VCNTL = 3V)
Control Voltage High
Control Voltage Low
Min
2.7
70% VDD
0
Typ
3.0
33
Max
3.3
40
5
30% VDD
Unit
V
µA
V
V
Copyright Peregrine Semiconductor Corp. 2003
Page 2 of 7
PE4249
Product Specification
Electrostatic Discharge (ESD) Precautions
When handling this UTSi device, observe the same
precautions that you would use with other ESD-
sensitive devices. Although this device contains
circuitry to protect it from damage due to ESD,
precautions should be taken to avoid exceeding the
rating specified.
Latch-Up Avoidance
Unlike conventional CMOS devices, UTSi CMOS
devices are immune to latch-up.
Device Description
The PE4249 high isolation SPST CATV Switch is
designed to support CATV applications such as
premium channel service connect/disconnect switch
blocks. This function is typically performed by bulky
and expensive mechanical switches. The high
isolation characteristics (60 dB at 1 GHz, 85 dB at 5
MHz), high compression point, and an integrated 75
(0.25 watt) input termination make the PE4249 an
ideal, low cost solution.
Figure 3. Typical Application Block Diagram
CATVin
2-way
Splitter
Premium
Channel
Filter
PE4249
PE4249
CATVout
Table 5. Truth Table
Control Voltage (CTRL)
High1
Low
Signal Path (RF1 to RF2)
ON
OFF
Notes: 1. CTRL accepts both CMOS and TTL voltage leads.
The control logic input pin (CTRL) is typically driven
by a 3-volt CMOS logic level signal, and has a
threshold of 50% of VDD. For flexibility to support
systems that have 5-volt control logic drivers, the
control logic input has been designed to handle a 5-
volt logic HIGH signal. (A minimal current will be
sourced out of the VDD pin when the control logic
input voltage level exceeds VDD.)
File No. 70/0110~00C | UTSi CMOS RFIC SOLUTIONS





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