RF2425 RF Micro Devices, RF2425 Datasheet - Page 3

• Manufacturer Part Number: RF2425
• Description: 4-PORT TRANSFER SWITCH
• Manufacturer: RF Micro Devices

Rev A1 010228
Pin
1
2
3
4
5
6
7
8
Function
OUT2
OUT2
CTRL
OUT1
GND
GND
VDD
VDD
J2
IN1
IN2
IN1
J1
50
50
1 F
Description
Input pin for Channel 1. Channel 1 is chosen with a logic level “Low” on
pin 6, CTRL. The input VSWR is 1:1 when this channel is active and
highly capacitive (open circuit) when this channel is inactive. Since
both channels of the switch are bidirectional, this pin may be used as
an output with OUT1 as its input depending on layout preference.
Ground connection. Keep traces physically short and connect immedi-
ately to the ground plane for best performance.
Power supply. An external RF bypass capacitor is recommended.
Output pin for Channel 2. This pin may be used as the channel 2 input
instead; see pin 5 description.
Input pin for Channel 2. Channel 2 is chosen with a logic level “High”
on pin 6, CTRL. The input VSWR is 1:1 when this channel is active
and highly capacitive (open circuit) when this channel is inactive. Since
both channels of the switch are bidirectional, this pin may be used as
an output with OUT2 as its input depending on layout preference.
Control pin. This pin chooses which channel is active. A “Low” level
chooses Channel 1; a “High” level chooses Channel 2. CMOS logic
may be used to drive the control input.
Same as pin 2.
Output pin for Channel 1. This pin may be used as the channel 1 input
instead; see pin 1 description.
C5
strip
strip
(Download Bill of Materials from www.rfmd.com.)
Evaluation Board Schematic
15 pF
15 pF
15 pF
C6
C1
C2
1
2
3
4
2425400-
P1-1
P1-3
P1
1
2
3
8
7
6
5
VDD
GND
CTRL
15 pF
15 pF
C4
C3
50
50
Interface Schematic
strip
strip
RF2425
CTRL
OUT1
IN2
J3
J4
9-21
9