www.ti.com
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
LL4148 or TBD
ANT LOOP
DNP
DNP
DNP
100014SCH−01
B
TRF4903/MSP4310F437 D
EMO
CNOWIRE Technology
1400 Coleman Ave.,Bldg G−22
, Sa nta Clara, CA. 95050
B
3
3
Thursday, October 21, 2004
Title
Size
Document Number
Rev
Date:
Sheet
of
EXCEPT AS MAY BE OTHERWISE PROVIDED BY CONTRACT, THIS
DRAWING OR SPECIFICATION IS THE PROPRIETARY PROPERTY OF
CNOWIRE TECHNOLOGY INC. IT IS ISSUED IN STRICT CONFIDENCE
AND SHALL NOT BE REPRODUCED OR COPIED OR USED (PARTIALLY OR
WHOLLY) IN ANY MANNER WITHOUT PRIOR EXPRESS WRITTEN
AUTHORIZATION OF CNOWIRE TECHNOLOGY INC.
STROB
D
A
T
A
C
P
O
U
T
XTALSW
C
L
K
XTALVCC
S
T
D
B
Y
PAVCC
V
C
O
T
U
N
E
VCOVCC
MODE
XTALVCC
VCOVCC2
C
P
V
C
C
T
X
−
D
A
T
A
VCO
XTAL
RF5
RF3
LOCK−DET
CPVCC
RF8
RF7
PAVCC2
VCC
VCC
VCC
VCC_RF
C40
.1uF
R66
10k
C14
43pF
D13
MBRM120LT3
D10
RED
R10
15K
R61
200
C55
.1uF
C54
100pF
D12
RED
R44
10
R35
10
Y2
19.6608MHZ
C17
27pF
U1
TRF4903PW
9
5
7
4
8
6
11
12
15
13
3 2
1
18
19
20
21
22 24 23
16
10
17
14
VCO_GND
PA_GND1
PA_GND2
PAOUT
VCO_PRE
PA_VCC
VCO_BYPASS
V
C
O
_
T
U
N
E
C
P
_
G
N
D
C
P
_
V
C
C
S
T
D
B
Y
MODE
T
X
_
D
A
T
A
DIG_GND
XTAL
XTALSW
G
N
D
S
T
R
O
B
E
C
L
K
D
A
T
A
DET_LD_DCLK
VCO_COR
XTAL_VCC
C
P
_
O
U
T
C22
5600pF
C20
75pF
C48
33pF
D11
RED
R11
1K
C25
0.5pF
R39
10
C59
.1uF
R62
200
R12
1K
C53
.1uF
C64
1.5pF
L6
15nH
TP4
TP_WH
T
EXT−TXDATA
R65
10k
C58
.1uF
C51
.1uF
Q3
FMMT2222A
1
2
3
Q2
FMMT2222A
1
2
3
C24
0.5pF
R9
7.5K
C2
4.7pF
JP1
0 ohm
2
3 1
C23
.1uF
R6
0
C56
.1uF
C52
.1uF
C21
120pF
R63
200
R38
10
CO1
SMA EGDE
R43
10
Q1
FMMT2222A
1
2
3
C15
33pF
R40
10
C18
22pF
L5
270nH
LQW18ANR27G00
+
C60
22uF
16V
−20+80%
R64
10k
D
A
T
A
S
T
D
B
Y
C
L
K
MODE
T
X
−
D
A
T
A
STROB
LOCK−DET
SCHEMATICS
Figure 14. Schematic (Page 3)
TRF4903 With MSP430 Demonstration and Development Evaluation Kit
24
SWRU010A – October 2004 – Revised May 2005