RFSA2724 Datasheet, PDF (6/9 Pages) RF Micro Devices – Serial Controlled Digital Step Attenuator, 50MHz to 4000MHz

RFSA2724
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
EPAD
Function
NC
VDD
GND
RF1
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
RF2
GND
GND
GND
NC
PUP
CLK
LE
NC
DATA
GND
Pin Names and Description
Description
No Internal Connection. EVB can be ground or no connect.
Power Supply.
DC and RF Ground.
RF Port. External DC Block Required.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
RF Port. External DC Block Required.
DC and RF Ground.
DC and RF Ground.
DC and RF Ground.
No Internal Connection. EVB can be ground or no connect.
Power-up Programming Pin.
Low = Max Attenuation (31.75dB) at power-up.
High = Min Attenuation (0dB) at power-up.
Serial Clock.
Latch Enable.
No Internal Connection. EVB can be ground or no connect.
Serial Data.
DC and RF Ground. Must be soldered to EVB ground plane over a bed of vias for thermal and RF performance.
Power-up Programming Truth Table
PUP
Attenuator Setting
Low
Attenuation at Max, 31.75dB
High
Attenuation at Min, 0dB
6 of 9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
DS130212