Figure 36. Application Circuit: fRF = 315 MHz without SAW Filter
VS
IC_ACTIVE
C7
2.2u
10%
C6
10n
10%
R2
Sensitivity reduction
56k to 150K
V
= 5 V to 20 V
X
GND
R3
>= 1.6k
T5743
1
2
3
20
19
18
17
16
SENS
DATA
DATA
POLLING/_ON
C14
33n 5%
IC_ACTIVE POLLING/_ON
CDEM
DGND
DATA_CLK
MODE
DATA_CLK
4
5
6
AVCC
TEST
AGND
C13
10n
10%
15
14
DVCC
XTO
Q1
C11
7
MIXVCC
C3
8
13
12
11
15p
2%
4.906MHz
LNAGND
LNA_IN
NC
LFGND
LF
LFVCC
np0
9
33p
5%
np0
10
C12
C15
150p
10%
10n
10%
C8
150p
10%
COAX
C17
C16
R1
820
5%
3.3p
5%
100p
5%
np0
np0
L2 TOKO LL2012 F39NJ
C9
4.7n
5%
39n
5%
C10
1n
5%
Figure 37. Application Circuit: fRF = 433.92 MHz with SAW Filter
VS
IC_ACTIVE
C7
2.2u
10%
C6
10n
10%
R2
Sensitivity reduction
56k to 150k
= 5 V to 20 V
V
X
GND
R3
>= 1.6k
T5743
1
2
3
20
19
18
17
16
SENS
DATA
DATA
POLLING/_ON
C14
IC_ACTIVE POLLING/_ON
CDEM
DGND
DATA_CLK
MODE
DATA_CLK
4
5
6
33n 5%
AVCC
TEST
AGND
C13
15
14
DVCC
XTO
10n
Q1
C11
10%
7
MIXVCC
12p
2%
8
13
12
11
C3
6.7643MHz
LNAGND
LNA_IN
NC
LFGND
LF
LFVCC
9
np0
22p
10
5%
np0
C12
C15
150p
10%
C8
150p
10%
10n
10%
C16
C17
8,2p
np0
L3 TOKO LL2012
F27 NJ
100p
5%
5%
np0
R1
820
5%
27n
5%
L2 TOKO LL2012
COAX
C9
4.7n
5%
F33NJ
1
5
C10
IN
IN_GND
OUT
2
6
1n
OUT_GND
33n
C2 5%
5%
7
8
3
4
8.2p
5%
np0
CASE_GND
B3555
CASE_GND
30
T5743
4569A–RKE–12/02
ATMEL [ ATMEL ]
