RF2421 RF Micro Devices, RF2421 Datasheet - Page 3

• Manufacturer Part Number: RF2421
• Description: 10dB SWITCHED ATTENUATOR
• Manufacturer: RF Micro Devices

Rev A6 001102
Pin
1
2
3
4
5
6
7
8
Function
RF OUT
RF IN
GND
VDD
G10
RF OUT
NC
NC
NC
RF IN
J2
J1
50
50
Description
Not internally connected. This pin can be grounded.
RF Input. This pin is not DC blocked, and an external blocking capacitor
is recommended. The value depends on the frequency used.
Ground connection. Keep trace physically short and connect immedi-
ately to the ground plane for best performance.
RF Output. This pin is not DC blocked, and an external blocking capac-
itor is recommended. The value depends on the frequency used.
Not internally connected. This pin can be grounded.
Power supply pin. An external RF bypass capacitor is recommended.
Control pin for the 10dB attenuator. This pin has an internal pull-down
resistor, so when the pin is not connected the attenuator will be turned
off.
Not internally connected. This pin can be grounded.
strip
strip
(Download Bill of Materials from www.rfmd.com.)
Evaluation Board Schematic
100 pF
100 pF
C3
C4
P1-1
P1-3
1
2
3
4
P1
1
2
3
ATTN
GND
VDD
2421400 Rev A
8
7
6
5
100 pF
C1
Interface Schematic
See pin 2.
100 nF
RF IN
C2
G10
RF2421
P1-3
P1-1
RF OUT
9-17
9