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PE4257
Product Specification
Figure 3. Pin Configuration (Top View)
Table 3. Absolute Maximum Ratings
Symbol
V DD
V I
Parameter/Condition
Power supply voltage
Voltage on any DC input
Min
-0.3
-0.3
Max
4.0
V DD + 0.3
Units
V
V
GND
GND
RF1
1
2
3
GND
15 GND
14 GND
13
RF2
P RF
T ST
T OP
V ESD
RF power on RFC, RF1, RF2
On Port/ Terminated Port
Storage temperature
Operating temperature
ESD voltage
(Human Body Model)
-65
-40
1000
33/24
+150
+85
dBm
°C
°C
V
GND, RF1 Term.
GND
4
5
12 GND, RF2 Term.
11 GND
Exceeding absolute maximum ratings may cause
permanent damage. Operation should be restricted to
the limits in the Operating Ranges table. Operation
between operating range maximum and absolute
maximum for extended periods may reduce reliability.
4x4mm 20-Lead QFN
Table 4. Operating Ranges @ 25 °C
Parameter
Min
Typ
Max
Unit
Table 2. Pin Descriptions
V DD Power Supply
2.7
3.0
3.3
V
No.
1
2
3 1
Name
GND
GND
RF1
RF Ground
RF Ground
RF I/O
Description
I DD Power Supply Current
(V DD = 3V, V CNTL = 3V)
Control Voltage High
Control Voltage Low
0.70 V DD
0
8
20
0.30 V DD
μ A
V
V
4
5
6
7
8 1
9
10
11
12
13 1
14
15
16 2
17 2
18 3
19
20
GND
GND
GND
GND
RFC
GND
GND
GND
GND
RF2
GND
GND
CTRL2
CTRL1
VSS / GND
GND
VDD
RF Ground
RF Ground
RF Ground
RF Ground
RF Common
RF Ground
RF Ground
RF Ground
RF Ground
RF I/O
RF Ground
RF Ground
Control 2
Control 1
Negative Supply Option
Digital Ground
Supply
Latch-Up Avoidance
Unlike conventional CMOS devices, UltraCMOS?
devices are immune to latch-up.
Electrostatic Discharge (ESD) Precautions
When handling this UltraCMOS? 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.
Switching Frequency
The PE4257 has a maximum 25 kHz switching rate
when the internal negative voltage generator is used
(pin 18=GND). The rate at which the PE4257 can be
switched is only limited to the switching time if an
external -3 V supply is provided at (pin18=V SS ).
Pad GND RF Ground Pad
Notes: 1. RF pins 3, 8, and 13 must be at 0 VDC. The RF pins do
not require DC blocking capacitors for proper operation if the
Table 5. Truth Table
CTRL1 CTRL2
RFC – RF1
RFC – RF2
0 VDC requirement is met.
2. Pins 16 and 17 are the CMOS controls that set the four
operating states.
3. Connect pin 18 to GND to enable the negative voltage
generator. Connect pin 18 to V SS (-3 V) to bypass and
Low
Low
High
High
Low
High
Low
High
OFF
OFF
ON
N/A 1
OFF
ON
OFF
N/A 1
disable internal -3 V supply generator. See paragraph
“Switching Frequency.”
?2004-2009 Peregrine Semiconductor Corp. All rights reserved.
Notes: 1. The operation of the PE4257 is not supported or
characterized in the C1=V DD and C2=V DD state.
Document No. 70-0166-06 │ UltraCMOS? RFIC Solutions
Page 2 of 7
Logo updated under non-rev change. Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com
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