TDA8822 Datasheet, PDF (20/28 Pages) NXP Semiconductors – Universal I2C-bus programmable RF modulator

Philips Semiconductors
Universal I²C-bus programmable RF
modulator
APPLICATION INFORMATION
Preliminary specification
TDA8822
SCL
SDA
NICAM
AUDIO
VIDEO
C21
R21
51 Ω
1 nF
C22
220 pF
R27
220 kΩ
R22
12
R24
C24
kΩ
470 Ω _{100 nF}
R14
270 Ω
R15
270 Ω
C19
C18
100
100
pF
pF
R18
1 kΩ
RFB
RFA
P0
R26
82 Ω
R25
470 Ω
VIDEO AGND AUDIO NICAM RFGND RFA
24
23
22
21
20
19
RFB
18
TPSG P0
17
16
SDA
15
SCL
14
DGND
13
VCC = 5 V
VVT = 33 V
TDA8822
C25
10
nF
1
2
3
4
5
6
7
8
9
10
11
12
VCCA ACP
C2
C1
2.2
100
nF
µF
PRE
EMPH
R2
4.7
C26
kΩ
68 nF
RFOSCA RFOSCB OGND RFOSCC RFOSCD VVT
VCP
VCCD
C4
(1)
C5
(1)
L1 (1)
(1)
D1
R5
22 kΩ
C7
(1)
C8
(1)
C6
(1) _R7
22 kΩ
C9
10 nF
R8
15 kΩ
C10
4.7
nF
R10
33
kΩ
C27
100 nF
R9
27 kΩ
XTAL
XTAL1
4 MHz
C12
18 pF
C11
10 nF
MGE678
(1) The components marked: C4, C5, C6, C7, C8, L1 and D1 must be chosen from Table 11 to get the desired frequency range.
Fig.7 Reference application.
1997 Jan 08
20