TDA4453 반도체 회로 부품 판매점
Video IF Amplifier for Multistandard TV Receiver and VTR Appliances
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 TEMIC Semiconductors |
TDA4453
Video IF Amplifier for Multistandard TV Receiver and VTR
Appliances
Technology: Bipolar
Features
D Interference suppression
D Standard B/G-L suitable, processes negatively and
positively modulated IF-signals with equal polarity of
the output signal
D Ultra white inverter and ultra black limiter for
reducing transmission interference
D Internally noise protected gain control, no flyback
pulses required
D Expanded video frequency response allows the
demodulation of amplitude modulated MAC signals
D High input sensitivity
D Minimal intermodulation interference
D Fast AGC by controlled discharge of the
AGC capacitor
Standard L mode: AGC acting on peak white level,
capacitor discharge control by averaged video signal
Standard B/G: AGC acting on the sync. pulse peak
D Small differential error
D Constant input impedance
D Video output voltage with narrow tolerance
D Adapted output for insertion of ceramic transducers as
intrinsic sound trap
D Connecting and basic circuitry compatible to the
TEMIC video IF type programme - permits building
block system for video IF module
TELEFUNKEN Semiconductors
Rev. A1, 15-Aug-96
Figure 1. Block diagram
1 (7)
TDA4453
Pin Description
Pin Function
1,16 IF-input
2 Standard switch: open B/G
ground L
3,15 Ground
4 IF-AGC storage capacitor
5 AGC (tuner control)
6 Tuner AGC take over
Pin Function
7 Not connected
8,9 Demodulator circuit
10 Average capacitor standard L
11 Video output
12 Not connected
13 Supply voltage
14 Not connected
Circuit Description
The following function units are integrated in this circuit
combination for video-IF processing:
D Three symmetric, highly stable, gain controlled wide-
band amplifier, quasi galvanic coupling eliminates
feed back
D Video carrier controlled demodulator of high linearity
D Polarity switch over for video
D Video output amplifier with low-pass characteristics,
limiter for ultra black and inverter for ultra white
interference
D High impedance, interference free controlled voltage
facilities, best possible AGC time constant with small
storage capacitor
D Controlled discharge circuit for fast gain control
D With VTR - operation the video output level is
according to the ultra white level in B/G, ultra black
level in L
Absolute Maximum Ratings
Reference point Pin 3, unless otherwise specified
Parameters
Supply voltage
Pin 13
Supply current
Pin 13
Open loop voltage
Pin 5
External voltage
Pin 4
Pin 11
Breaking current for VTR operation
Pin 4
Video output current
Max. load
Short circuit max 1 s
Power dissipation
Junction temperature
Pin 11
Pin 11
Tamb ≤ 60°C
Ambient temperature range
Storage temperature range
Thermal Resistance
Junction ambient
Parameters
Symbol
VS
IS
V5
V4
V11
I4
IO
Ptot
Tj
Tamb
Tstg
Symbol
RthJA
Value
10 to 13.5
65
VS
10
8
0.3
5
30
1.0
125
–25 to +70
–25 to +125
Maximum
60
Unit
V
mA
V
V
mA
mA
W
°C
°C
°C
Unit
K/W
2 (7) TELEFUNKEN Semiconductors
Rev. A1, 15-Aug-96
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제조업체: TEMIC Semiconductors
( temics )
TDA4453 amplifier
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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