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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
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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 60C Junction temperature Ambient temperature range Storage temperature range
Thermal Resistance
Parameters Junction ambient Symbol RthJA Maximum 60 Unit K/W
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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
V V
Pin 2 Pin 2 Pin
V2 V2 vi P I5
2 0 100
VS 1.2
v14(pp) =3.0 V 1-16 V4 = 0.8 V
mV
dB mA
10 dB via AGC use Pin 5 Pin 6 not connected Pin 5
60 3
4
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
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TDA4453
Parameters Test Conditions / Pins IF-residual voltage at the f = 38.9 MHz Pin 11 video output in the AGC f = 77.8 MHz area Differential gain error Differential phase error Sound-chroma beat (1.07 MHz intermodulation) relating to demodulated auxiliary colour carrier Video carrier = 0 dB Colour carrier = -6 dB Sound carrier = -24 dB Upsetting factor sync. pulse Input impedance 1-16 Video switch Control voltage RF operation VTR operation Pin Symbol v Min. Typ. 10 20 3 3 50 Max. Unit mV
o aIM
d
5 5
% degree dB
DVSync
V Sync Ri Ci V4 I4 8
3 1.6 2 10 150
% kW pF
mA
V
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Figure 2. Test circuit
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TDA4453
Dimensions in mm
Package: 16-pin dual inline plastic
Case 20A16 DIN 41866 JEDEC M0 001 AC
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Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( ODSs). The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency ( EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
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