Read Sharp LC-20B6E (serv.man10) Service Manual online
48
LC-20B6E
5. TU2201 RTUNQA016WJZZ
5.1. Block Diagram
PLL
Mix-Osc
IF-amp
AGC
Detector
Detector
SDA
SCL
Vcc
AS
33V
AGC
Pre-
filtering
filtering
Tracking
filters
filters
Tracking
filters
filters
Gain
controllable
pre-amplifiers
controllable
pre-amplifiers
TV IF o/p
FM IF o/p
(10.7 MHz)
(10.7 MHz)
TV
FM
RF i/p
(TV)
(TV)
RF i/p *
(FM)
(FM)
RF i/p*
(FM)
(FM)
* mutually exclusive
ADC
1
2
3
4
5
7
8
9
10
11
SYMBOL
PIN
DESCRIPTION
AGC
1
Gain Control Voltage
TU/FM
2
Tuning voltage monitor output / FM antenna input for R/ version
AS
3
I
2
C-Bus Address Select
SCL
4
I
2
C-Bus Serial Clock
SDA
5
I
2
C-Bus Serial Data
n.c.
6
Not Connected
5V
7
Supply Voltage +5V
ADC
8
ADC Input
(5)
V
T
9
Fixed tuning Supply Voltage +33V
FM-IF
10
10.7 MHz FM IF output
IF
11
Asymmetrical TV IF Output
GND
M1,M2,M3,M4 Mounting Tags (Ground)
NOTE
(5)
Standard 5 level Analog to Digital Converter
5.2. Pinning
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