RFSA2644 Datasheet, PDF (7/12 Pages) RF Micro Devices – SERIAL CONTROLLED DIGITAL STEP ATTENUATOR 50MHz TO 4000MHz, 6-BIT, 0.5dB LSB

RFSA2644
J99
C19
SMA ₁
Evaluation Board Schematic
C20
J100
1 ^SMA
GND
VDD
GND
C4/CLK
C4 C2/LE
C3
GND
C5 C1
GND
C05/DATA
C6
GND
C025
C9
GND
C8/PUP C2
GND
C16 C1
GND
VDD
GND
C025
C05/DATA
C1
C2/LE
C4/CLK
C8/PUP
C16
GND
R7 _U1
R8
C8
C7
GND
J1
RF1 1
GND
GND
C11
C18
GND
1
2
GND ³
4
GND ⁵
6
C0.25
VDD
GND/NC
RF1
GND/NC
NC
GND/NC ¹⁸
GND/NC ¹⁷
GND/NC ¹⁶ GND
C12
RF2 ¹⁵
GND/NC ¹⁴ GND
NC ¹³
C13
P1
1
2
3
4
5
6
7
8
9
CON9
C025
C4/CLK
C1
C05/DATA
GND
C8/PUP
C16
C2/LE
P2
1 _TXD
2 _DTR#
3 _RTS#
4 _VIO
5 _RXD
6 _RI#
7 _GND
8 _DSR#
9 _DCD#
10 _CTS#
11 _CB4
12 _CB2
GND ²⁴
CB0 ²³
CB1 ²²
VCC ²¹
RST ²⁰
3V3 ¹⁹
CB3 ¹⁸
PU1 ¹⁷
PU2 ¹⁶
VCC ¹⁵
USB ¹⁴
SLD ¹³
UM232R
J2
1 ^RF2
GND
C14
C17
GND
C15
GND
GND
GND
GND
C16
GND
DS120706
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
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