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TDA8722 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. TDA8722
Description  I2C-bus programmable modulator for negative video modulation and FM sound
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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TDA8722 Datasheet(HTML) 4 Page - NXP Semiconductors

 
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1998 Jun 23
4
Philips Semiconductors
Product specification
I2C-bus programmable modulator for
negative video modulation and FM sound
TDA8722
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MBE401
LOGIC
enable/
select
f DIV
f ref
14
10 bits
I C-BUS
2
RECEIVER
12-BIT
DIVIDER
(N)
PHASE
DETECTOR
enable
CHARGE
PUMP
AMP
7
DIVIDER
(M = 128)
31.25 kHz
4 MHz
OSCILLATOR
9
XTAL
11
VDDD
DGND
10
8
AMP
CP
PRESCALER
(8)
ASYMMETRICAL
OUTPUT
BUFFER
UHF
OSCILLATOR
TDA8722
4
5
6
UOSCB
OGND
UOSCA
RF oscillator on
PC
AUDIO
FM MODULATOR
12
13
SDA
SCL
P0
SOSCB
SOSCA
AUDIO
3
2
1
SWITCH
TPSG
balance test
TPSG on
MIXER
16
15
VOLTAGE
REGULATOR
18
20
17
ADJUST
AGND
VDDA
RFA
RFB
CLIP
CLAMP
19
VIDEO
VIDEO AMP


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