CXA3355ERVQFN SONY [Sony Corporation], CXA3355ERVQFN Datasheet - Page 25

• Manufacturer Part Number: CXA3355ERVQFN
• Description: GPS Down Converter IC
• Manufacturer: SONY [Sony Corporation]

Application Circuit
V
V
V
CC
This diagram shows the application circuit when the initial settings are made for 4fo mode. (See page 17.)
The RF block bypass capacitors should have excellent high frequency characteristics.
Use parts with a tolerance of ±1% for the following resistor elements. Other parts should have a tolerance
of ±5%.
CC
CC
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
1 (RF)
• Pin 17 (LPF)
• Pin 42 (R_EXT1)
• Pin 44 (R_EXT2)
1 (IF)
2 (IF)
10n
ENABLE pin
Vcc2 (IF): Active mode
GND: Power save mode
10p
10n
1n
33k
39k
34
35
36
37
38
39
40
41
42
43
44
V
V
TESTINP
TESTINN
TESTOUTP
TESTOUTN
V
GND (IF)
R_EXT1
ENABLE
R_EXT2
CC
CC
CC
1 (RF)
1 (RF)
1 (IF)
33
1
32
2
12p
31
3
3.3p
12n
30
4
18n
SAW Filter
29
5
V
100p
18n
3p
CC
1 (LNA)
28
6
– 25 –
3.9n
DATA_OUT
27
7
1p
V
CC
26
2 (IF)
8
25
1n
9
24
10
2.7p
4.7n
12p
23
11
GND (LNA)
GND (LNA)
V
GND (PLL)
CLK_OUT
CC
C_VCO
1 (PLL)
VCO_I
TCXO
GND
LPF
Number of parts
(Excluding the antenna sense circuit)
LT
• Resistors: 3pcs
• Capacitors: 20pcs
• Inductors: 5pcs
• SAW filter: 1pcs
22
21
20
19
18
17
16
15
14
13
12
0.1µ
0.1µ
1µ
(LNA)
V
CC
10n
10p
24k
1
V
V
8p
CC
CC
V
(RF)
100p
1 (PLL)
CC
= 1.8V
0.1µ
1
TCXO input level:
V
(IF)
CC
0.2 to 1.2Vp-p
CXA3355ER
V
1
CC
(PLL)
V
1 (PLL)
CC
1
V
(IF)
CC
2