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PDF TDA4443 Data sheet ( Hoja de datos )
| Número de pieza | TDA4443 | |
| Descripción | MULTISTANDARD VIDEO IF AMPLIFIER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA4443 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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TDA4443
MULTISTANDARD VIDEO IF AMPLIFIER
. SWITCHING OFF THE IF AMPLIFIER WHEN
OPERATING IN VTR MODE
. DEMODULATION OF NEGATIVE OR POSI-
TIVE IF SIGNALS. THE OUTPUT REMAINS
ON THE SAME POLARITY IN EVERY CASE
. IF AGC AUTOMATICALLY ADJUSTED TO
THE ACTUAL STANDARD
. TWO AGC POSSIBILITIES FOR B/G MODE :
1. GATED AGC
2. UNGATED AGC ON SYNC. LEVEL AND
CONTROLLED DISCHARGE DEPENDENT
ON THE AVERAGE SIGNAL LEVEL FOR VTR
AND PERI TV APPLICATIONS
FOR STANDARD L : FAST AGC ON PEAK
WHITE BY CONTROLLED DISCHARGE
. POSITIVE OR NEGATIVE GATING PULSE
. EXTREMELY HIGH INPUT SENSITIVITY
. LOW DIFFERENTIAL DISTORTION
. CONSTANT INPUT IMPEDANCE
. VERY HIGH SUPPLY VOLTAGE REJECTION
. FEW EXTERNAL COMPONENTS
. LOW IMPEDANCE VIDEO OUTPUT
. SMALL TOLERANCES OF THE FIXED VIDEO
SIGNAL AMPLITUDE
. ADJUSTABLE, DELAYED AGC FOR PNP
TUNERS
DESCRIPTION
The TDA4443 is a Video IF amplifier with standard
switch for multistandard colour or monochrome TV
sets, and VTR’s.
DIP16
(Plastic Package)
ORDER CODE : TDA4443
PIN CONNECTIONS
IF INPUT
STANDARD SWITCHING
GROUND
IF AGC TIME CONSTANT
DELAYED TUNER AGC OUTPUT
TUNER AGC ADJUST
GATING PULSE INPUT
REFERENCE LC NETWORK
1
2
3
4
5
6
7
8
16 IF INPUT
15 GROUND
14 NOT TO BE CONNECTED
13 SUPPLY VOLTAGE V CC
12 NOT TO BE CONNECTED
11 VIDEO SIGNAL OUTPUT
10 DISCHARGE TIME CONSTANT
9 REFERENCE LC NETWORK
December 1992
1/7
1 page  
SIGNAL 2 (standard L)
Demodulated Signal
1000mV
IF Signal
TDA4443
300mV
0mV
SIGNAL 3
100%
5%
Demodulated Signal
900mV
4.43MHz
200mV
100%
500mV
300mV
200mV
4.43MHz
0mV
TEST CIRCUIT
SUPPLY
VOLTAGE
VCC
22µF
VIDEO
OUTPUT
Attenuateur
47nF
22nF
16
10nF
N.C.
N.C.
15 14 13 12 11
68nF
10 9
Modulator
Video
Generator
22nF
22nF 1
2
200kΩ
MODE SWITCHING
20kΩ
TDA4443
345678
2.2µF
V4
2.5kΩ
5kΩ
I5 GATING
33pF
0.5µH
5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet TDA4443.PDF ] | |
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