Datasheet
national.com
© National Semiconductor Corporation 2009 Printed in U.S.
15
+
C9
10uF_open
12
R3482.5ohm_open
VDDIO
VDD3.3V
Place near pin 32 of U1
Place near pin 51 of U1
VDDIRc
JP2
1
2
3
VSS
+
C18
0.1uF
12
R36
100ohm_open
VDD
+
C17
2.2uF
12
VSS
J4
BANANA
1
+
C14
22uF
12
Place near pin 58 of U1
VSS
VSS
1.8V INPUT
POWER
CONNECTOR
JP1
12
VDD1.8V
J6
2x4 pin Jumper_open
2
4
6
8
1
3
5
7
OPTIONAL External 3.3V input.
VSS
VDD3.3V
CW
VR1
SVR100_open
1 3
2
VSS
U3
LM1117IMP-ADJ/SOT223_open
ADJ/GND
1
INPUT
3
OUTPUT
2
Tab/Vout
4
3.3V
VDDPRc
+
C2
10uF_open
12
VDDIO
VDDIO
+
C10
10uF_open
12
VDD
+
C1
10uF_open
12
VDD
!!!WARNING!!!
Input power thru J5 OR J4 OR JP3 OR J9
ONLY!!
Input power thru only one connector!!
CW
VR2
SVR100_open
1 3
2
VDDLc
VDDIOc
VDDIOc
VDDLc
OPTIONAL
5V to 3.3V
INPUT POWER
REGULATOR
OPTIONAL
5V to 1.8V
INPUT POWER
REGULATOR
OPTIONAL
5V INPUT POWER
CONNECTOR
U2
LM1117IMP-ADJ/SOT223_open
ADJ/GND
1
INPUT
3
OUTPUT
2
Tab/Vout
4
VDD
Place near pin 26 of U1
VDDIO=3.3V (external)
VDDIO=VDD (1.8V)
VDD
VSS
VDD
C21
0.1uF
C22
0.01uF
+
C20
22uF
12
C3
0.1uF
C4
0.01uF
+
C24
22uF
12
C7
0.1uF
C8
0.01uF
+
C32
22uF
12
C29
0.1uF
C25
0.01uF
+
C28
22uF
12
VSS
VSS
VSS
VSS
+
C33
22uF
12
VDDSCc
VDD
R3582.5ohm_open
Place near pin 6 of U1
C31
0.01uF
VDDSCc
C30
0.1uF
R60
0 Ohm,0402
VSS
VDDIRc
VDDPRc
VSS
+
C12
2.2uF
12
+
C11
22uF
12
+
C13
0.1uF
12
Tit le
Size Document Number Rev
Date: Sheet
of
DS92LV2422 Rx Demo Board 2
DS92LV2422 Rx Demo Board - Power and Decoupling
44Wednesday , May 19, 2010
VSS
VSS
R44
0 Ohm,0402
VDD3.3V
J7
CONN JACK PWR_open
3
2
1
R46
0 Ohm,0402
R59
0 Ohm,0402
R40
0 Ohm,0402
J5
BANANA
1