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Details, datasheet, quote on part number:TDA4453
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| Part: | TDA4453 |
| Category: | Multimedia => Video => Amplifiers |
| Description: | Video if Amplifier For Multistandard TV Receiver And VTR Appliances |
| Company: | Temic Semiconductors (acquired by ATMEL Corporation) |
| Datasheet: | Download TDA4453 datasheet File size : 104 kB |
| Request For quote: | Find where to buy TDA4453
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Datasheet text preview:
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 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 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 D D D
Small differential error Constant input impedance Video output voltage with narrow tolerance Adapted output for insertion of ceramic transducers as intrinsic sound trap TEMIC video IF type programme - permits building block system for video IF module
D High input sensitivity D Minimal intermodulation interference
D Connecting and basic circuitry compatible to the
Figure 1. Block diagram
TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96
1 (7)
TDA4453
Pin Description
Pin 1,16 2 3,15 4 5 6 Function IF-input Standard switch: open B/G ground L Ground IF-AGC storage capacitor AGC (tuner control) Tuner AGC take over Pin 7 8,9 10 11 12 13 14 Function Not connected Demodulator circuit Average capacitor standard L Video output Not connected Supply voltage Not connected
Circuit Description
The following function units are integrated in this circuit combination for video-IF processing:
D Video output amplifier with low-pass characteristics,
limiter for ultra black and inverter for ultra white interference
D Three symmetric, highly stable, gain controlled wideband amplifier, quasi galvanic coupling eliminates feed back
D High impedance, interference free controlled voltage
facilities, best possible AGC time constant with small storage capacitor
D Video carrier controlled demodulator of high linearity D Polarity switch over for video
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 Supply current Open loop voltage External voltage Pin 13 Pin 13 Pin 5 Pin 4 Pin 11 Pin 4 Symbol VS IS V5 V4 V11 I4 IO Ptot Tj Tamb Tstg Value 10 to 13.5 65 VS 10 8 0.3 5 30 1.0 125 25 to +70 25 to +125 Unit V mA V V mA mA W °C °C °C
Breaking current for VTR operation Video output current Max. load Pin 11 Short circuit max 1 s Pin 11 Power dissipation Tamb 60°C Junction temperature Ambient temperature range Storage temperature range
Thermal Resistance
Parameters Junction ambient Symbol RthJA Maximum 60 Unit K/W
2 (7)
TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96
TDA4453
Electrical Characteristics
Parameters Supply current 1) Ultra white level at standard B/G Ultra black clamping level at standard B?G Composite video output 2) signal B/G Video signal standard L 3) Difference of the video signals standard L-B/G Clamping level of black limiter Threshold of the ultra white inverter Grey level of the ultra white inverter Supply voltage influence on the ultra black level in standard B/G Supply voltage influence on the ultra white level in standard B/G Video bandwidth (3 dB) Video frequency response over the AGC control range Output DC current Response time of the 4) peak white control in standard L Voltage level standard 5) B/G Voltage level standard L 5) Input sensitivity 6) (symmetrical) IF-AGC gain reduction Available tuner AGC Automatic tuner AGC with IF-control
1) 2) 3) 4) 5) 6)
Test Conditions / Pins Pin 13 Pin 11 Pin 11 Pin 11 (black/white) Pin 11 Pin 11 Pin 11 Pin 11 Pin 11 Pin 11
Symbol IS Vo Vo vo(pp) vo(pp)
Min. 4.8 1.75 2.7 1.85
Typ. 65 5.2 1.9 3.0 2.1
Max. 5.6 2.05 3.3 2.35 10
Unit mA V V V V %
V11 V11 V11 V black V white
250 mV below sync. (typ.)
900 mV upper ultra white level (typ.)
3.6 0.5
V %/V
Pin 11
1.0
%/V
Pin 11 Pin 11
BVideo VVideo
10 2.0
MHz dB
V11= 8 V
Pin 11 Pin 4
I11 tr
2.8 10
mA ms
Pin 2 Pin 2 Pin
V2 V2 vi P I5
2 0 100
VS 1.2
V V mV
v14(pp) =3.0 V 116 V4 = 0.8 V
10 dB via AGC use Pin 5 Pin 6 not connected Pin 5
60 3
4
dB mA
AGC
61
dB
All measurements Pin 11 without load Residual carrier 10% Blanking level 30% carrier amplitude A peak white value for at least 10 ms must be transmitted for each complete frame Direct control of standard reversing switch with TTL level Sync. peak value standard B/G
TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96
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