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Product Specification
PE4241
SPDT UltraCMOS™ RF Switch
Product Description
The PE4241 UltraCMOS™ RF Switch is designed to cover a broad range of applications from DC through 3.0 GHz. This reflective switch integrates on-board CMOS control logic with a low voltage CMOS-compatible control interface, and can be controlled using either single-pin or complementary control inputs. Using a nominal +3-volt power supply voltage, a typical input 1 dB compression point of +27 dBm can be achieved. The PE4241 UltraCMOS™ RF Switch 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 Diagram
RFCommon
Features • Single-pin or complementary CMOS logic control inputs
• +3.0-volt power supply needed for
single-pin control mode
• Low insertion loss: 0.7 dB at 1.0 GHz,
0.9 dB at 2.0 GHz
• Isolation of 30 dB at 1.0 GHz, 21 dB at
2.0 GHz
• Typical input 1 dB compression point of
+27 dBm
• Ultra-small SOT23 package
Figure 2. Package Type
6-lead SOT23
RF1
RF2
CMOS Control Driver
CTRL CTRL or VDD
Table 1. Electrical Specifications @ +25 °C, VDD = 3 V (ZS = ZL = 50 Ω)
Parameter
Operation Frequency Insertion Loss Isolation Return Loss ‘ON’ Switching Time ‘OFF’ Switching Time Video Feedthrough
2 1
Conditions
1000 MHz 2000 MHz 1000 MHz 2000 MHz 1000 MHz 2000 MHz 50% CTRL to 0.1 dB of final value, 1 GHz 50% CTRL to 25 dB isolation, 1 GHz
Minimum
DC
Typical
0.7
Maximum
3000 0.85 1.05
Units
MHz dB dB dB dB dB dB ns ns mVpp dBm dBm
28 19 18 16
0.9 30 21 20 18 300 200 15
Input 1 dB Compression Input IP3
2000 MHz 2000 MHz, 14 dBm input power
26 43
27 45
Notes: 1. Device linearity will begin to degrade below 10 MHz. 2. The DC transient at the output of any port of the switch when the control voltage is switched from Low to High or High to Low in a 50 Ω test set-up, measured with 1ns risetime pulses and 500 MHz bandwidth. Document No. 70-0094-01 │ www.psemi.com ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 1 of 8
PE4241
Product Specification
Figure 3. Pin Configuration (Top View)
pin 1
Table 3. Absolute Maximum Ratings
Symbol Parameter/Conditions
Power supply voltage Voltage on any input Storage temperature range Operating temperature range Input power (50Ω) ESD voltage (Human Body Model)
Min
-0.3 -0.3 -65 -40
Max
4.0 VDD+ 0.3 150 85 30 1500
Units
V V °C °C dBm V
RF1 GND RF2
1
6
CTRL or VDD RFC CTRL
VDD VI TST TOP PIN
.
4241
Pin Name
RF1 GND RF2 CTRL RFC CTRL or VDD
2
5
3
4
Table 2. Pin Descriptions
Pin No.
1 2
VESD
Description
RF1 port (Note 1) Ground connection. Traces should be physically short and connected to RF2 port (Note 1) Switch control input, CMOS logic level. Common RF port for switch (Note 1) This pin supports two interface options: Single-pin control mode. A nominal 3volt supply connection is required. Complementary-pin control mode. A complementary CMOS control signal to CTRL is supplied to this pin. Bypassing on this pin is not required in this mode.
Table 4. DC Electrical Specifications
Parameter
VDD Power Supply VoltPower Supply Current (VDD = 3V, VCNTL = 3V) Control Voltage High Control Voltage Low 0.7x VDD 0.3x VDD
Min
2.7
Typ
3.0 250
Max
3.3 500
Units
V nA V V
3 4 5 6
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 specified rating. Latch-Up Avoidance Unlike conventional CMOS devices, UltraCMOS™ devices are immune to latch-up.
Note 1:
All RF pins must be DC blocked with an external series capacitor or held at 0 VDC.
©2005 Peregrine Semiconductor Corp. All rights reserved. Page 2 of 8
Document No. 70-0094-01 │ UltraCMOS™ RFIC Solutions
PE4241
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Voltages
Pin 6 (CTRL or VDD) = VDD Pin 4 (CTRL) = High Pin 6 (CTRL or VDD) = VDD Pin 4 (CTRL) = Low
Signal Path
RFC to RF1
Control Logic Input The PE4241 is a very versatile RF CMOS switch that supports two operating control modes; singlepin control mode and complementary-pin control mode. Single-pin control mode enables the switch to operate with a single control pin (pin 4) supporting a +3-volt CMOS logic input, and requires a dedicated +3-volt power supply connection on pin 6 (VDD). This mode of operation reduces the number of control lines required and simplifies the switch control interface typically derived from a CMOS µProcessor I/O port. Complementary-pin control mode allows the switch to operate using complementary control pins CTRL and CTRL (pins 4 & 6), that can be directly driven by +3-volt CMOS logic or a suitable µProcessor I/O port. This enables the PE4241 to be used as a potential alternate source for SPDT RF switch products used.