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Renesas Electronics Components Datasheet

F2955 Datasheet

High Reliability SP5T RF Switch

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High Reliability SP5T RF Switch
50MHz to 8000MHz
F2955
Datasheet
Description
The F2955 is a high reliability, low insertion loss, 50Ω SP5T
absorptive RF switch designed for a multitude of RF applications,
including wireless communications. This device covers a broad
frequency range from 50MHz to 8000MHz. In addition to providing
low insertion loss, the F2955 also delivers excellent linearity and
isolation performance while providing a 50Ω termination to the
unused RF input ports. The F2955 also includes a patent-pending
constant impedance (K|Z|™) feature. K|Z| improves system hot
switching ruggedness, minimizes LO pulling in VCOs, and reduces
phase and amplitude variations in distribution networks. It is also
ideal for dynamic switching/selection between two or more
amplifiers while avoiding damage to upstream/downstream
sensitive devices, such as power amplifiers (PAs) and analog-to-
digital converters (ADCs).
The F2955 uses a single positive supply voltage supporting three
logic control pins using either 3.3V or 1.8V control logic.
Connecting a negative voltage to pin 20 disables the internal
negative voltage generator and becomes the negative supply.
Features
Five symmetric, absorptive RF ports
High isolation: 49dB at 4000MHz
Low insertion loss: 1.1dB at 4000MHz
High linearity:
IIP2 of 114dBm at 2000MHz
IIP3 of 60.5dBm at 4000MHz
High operating power handling:
33dBm CW on selected RF port
27dBm on terminated ports
Single 2.7V to 5.5V supply voltage
External negative supply option
3.3V and 1.8V compatible control logic
Operating temperature: -40°C to +105°C
4 x 4 mm 24-QFN package
Pin compatible with competitors
Competitive Advantage
The F2955 provides constant impedance in all RF ports during
transitions, improving a system’s hot-switching ruggedness. The
device also supports high-power handling and high isolation,
particularly important for DPD receiver use.
Constant impedance K|Z| during switching transition
RFX to RFC isolation = 49dB at 4GHz
Insertion loss = 1.1dB at 4GHz
IIP3: +60.5dBm at 4GHz
Extended temperature: -40°C to +105°C
Block Diagram
Figure 1. Block Diagram
RFC
K|Z|
RF4
50
RF1
50
Typical Applications
Base Station 2G, 3G, 4G
Portable Wireless
Repeaters and E911 Systems
Digital Pre-distortion
Point-to-Point Infrastructure
Public Safety Infrastructure
Military Systems, JTRS Radios
Cable Infrastructure
Test / ATE Equipment
RF3
50
Control
RF2
50
VDD VSSEXT V1 V2 V3
© 2018 Integrated Device Technology, Inc.
1
October 11, 2018


Renesas Electronics Components Datasheet

F2955 Datasheet

High Reliability SP5T RF Switch

No Preview Available !

Pin Assignments
Figure 2. Pin Assignments for 4 x 4 x 0.75 mm 24-QFN – Top View
GND 1
RF5 2
GND 3
GND 4
RF4 5
GND 6
E.P.
50
50
50
Control
Circuit
50
50
18 V2
17 V1
16 VDD
15 GND
14 RF1
13 GND
F2955 Datasheet
Pin Descriptions
Table 1. Pin Descriptions
Number
1, 3, 4, 6, 7, 9, 10, 12,
13, 15, 21, 23, 24
2
5
8
11
14
16
17
18
19
20
22
Name
Description
GND Ground these pins as close to the device as possible.
RF5
RF4
RF3
RF2
RF1
VDD
V1
V2
V3
VSSEXT
RFC
EPAD
RF5 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used.
RF5 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used.
RF5 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used.
RF5 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used.
RF5 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used.
Power Supply. Bypass to GND with capacitors as shown in the “Typical Application Circuit” (Figure 39) as
close as possible to the pin.
Control pin to set the switch state. See Table 8.
Control pin to set the switch state. See Table 8.
Control pin to set the switch state. See Table 8.
External VSS negative voltage control. Connect to ground to enable on-chip negative voltage generator.
To bypass and disable on chip generator connect this pin to an external VSS.
RF Common Port. Matched to 50Ω when one of the 5 RF ports is selected. If this pin is not 0V DC, then
an external coupling capacitor must be used.
Exposed Paddle. Internally connected to GND. Solder this exposed pad to a PCB pad that uses multiple
ground vias to provide heat transfer out of the device into the PCB ground planes. These multiple ground
vias are also required to achieve the specified RF performance.
© 2018 Integrated Device Technology, Inc.
2
October 11, 2018



Part Number F2955
Description High Reliability SP5T RF Switch
Maker Renesas
Total Page 3 Pages
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F2955 Datasheet PDF





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