TDA4452 Video IF Amplifier for Multistandard TV Receiver and VTR Appliances Technology: Bipolar Features 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 ultrablack limiter for D Fast AGC by controlled discharge of the AGC capacitor D Standard L mode: AGC acting on peak white level, capacitor discharge control by averaged video signal reducing transmission interference D Internally noise protected gain control, no flyback Standard B/G: AGC acting on the sync. pulse peak D Minimal intermodulation distortions D D D D D D D Small differential error Case: DIP18 pulses required D Expanded video frequency response allows the demodulation of amplitude modulated MAC signals D High input sensitivity Constant input impedance Video output voltage with narrow tolerance Video input/output for insertion of external sound trap VTR input/output with video switch Adjustable, delayed AGC for the tuner ESD protected Figure 1. Block diagram TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 1 (11) TDA4452 Pin Description Pin 1,18 2 3 4 5 6 7 Function IF input Video switch control VTR input, 1 VPP VTR output, 2 VPP (inverted) Supply voltage VS Video output, 2 VPP Video input, after sound trap, 2 VPP Pin 8,17 9 10,11 12 13 14 15 16 Function Ground Video output, 3 VPP from demodulator Demodulator circuit standard switch B/G-L Average capacitor standard L Tuner AGC take over AGC (tuner control) IF AGC storage capacitor Circuit Description The following functional units are integrated in this circuit combination for processing multi standard television IF signals: The IF signal is supplied to the synchronous demodulator via a three-stage gain controlled wideband amplifier. A level detector limits the output voltage of the wideband amplifier in the event of overdrive. The required switching carrier for the demodulator is obtained from the IF signal of the wideband amplifier by means of a selection and limiter stage. A delay network is connected upstream of the demodulator in order to compensate phase differences. The polarity of the switching carrier at the output of the limiter stage can be reversed with the standard switch (Pin 12), with the result that negatively or positively modulated IF signals appear at the demodulator output with the same polarity. The demodulated video signal is filtered and amplified and is supplied to the video output (Pin 9) via a noise limiter stage. 2 (11) The standard switch also adapts the operating point of the video post-amplifier and the IF AGC to the standard which is to be processed. In the case of standard B/G, the synchronous peak value acts as the control criterion for rapid charging and discharge. In contrast, rapid control is achieved for standard L by charging for ultra white and discharge by the average (Pin 13) with controlled reference. An adjustable control current output (Pin 15) is available for delayed control of the tuner pre-stage. A video source switch with 2 inputs is integrated for VTR applications. The external VTR signal is supplied capacitively to the input Pin 3 and is clamped to the synchronous peak value. The second video input Pin 7 is connected with Pin 9 (video signal from demodulator) via an external sound trap. The sound trap must process an attenuation for dc and ac of 3.5 dB so that the video switch is not overdrived. In addition, the demodulated video signal is available in inverted form as a VTR output signal at Pin 4, independent of the position of the video switch. TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 TDA4452 Absolute Maximum Ratings Reference point Pin 8, unless otherwise specified Parameters Supply voltage range External voltage Video output current,max load Short circuit max 1 s Junction temperature Ambient temperature range Storage temperature range Pin 5 Pin 2, 4, 12, 15 Pin 9, 16 Pin 6 Pin 4, 6, 9 Pin 4, 6, 9 Symbol VS V2,4,12,15 V9,16 V6 I0 I0 Tj Tamb Tstg Value 10 to 13.5 VS 8 6 5 30 125 –25 to +70 –25 to +125 Unit V Symbol RthJA Value 60 Unit K/W V mA mA °C °C °C Thermal Resistance Parameters Junction ambient, in soldered position Electrical Characteristics VS = +12 V, Tamb = 25°C, reference point Pin 8, unless otherwise specified Parameters Test Conditions / Pins Supply voltage Pin 5 Supply current Pin 5 IF amplifier and AGC, Pins 1, 18 Min. input voltage Max. input voltage IF AGC gain reduction Input impedance Response time of the peak white control in standard L 1) Available tuner AGC Automatic tuner AGC with IF control Demodulator and output stage 2), Pin 9 Ultra white level at standard B/G Ultra black clamping level at standard B/G Composite video output signal B/G 3) Symbol VS IS Min. 10 38 Typ. 44 Unit V mA 100 mV Pin 16 Vi Vi ∆vp Ri Ci tr Pin 15 I15 5 mA AGC 61 dB 100 60 70 120 65 1.2 2 Max. 13.5 52 mV dB kW pF ms 10 Vo 7.1 7.5 7.9 V Vo 4.0 4.2 4.4 V vo(pp) 2.7 3.0 3.3 V Notes: 1) A peak white value for at least 10 ms must be transmitted for each complete frame 2) All measurements Pin 9 without load 3) Residual carrier 10% TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 3 (11) TDA4452 Parameters Ultra black level at standard L White level at standard L Video signal standard L 4) Output dc current Difference of the video signals, standards L and B/G Upsetting factor sync. pulse Test Conditions / Pins V9 = 8 V Symbol V0 Min. 3.8 Typ. 4.0 Max. 4.2 Unit V V0 6.8 1.85 7.2 2.1 2.5 7.6 2.35 V V mA % v0(pp) I9 ∆ 10 DVSync 3 V Sync Tild between black and white Clamping level of black limiter Threshold of the ultra white inverter Grey level of the ultra white inverter Video bandwidth (–3 dB) Video frequency response over the AGC range Differential gain error Differential phase error Sound-chroma beat IF residual voltage at the video output Standard switch, Control voltage standard B/G Control voltage standard L (Pin 12 not connected; standard B/G) Video switch Control voltage for Clamp level Composite video output voltage 5 V9 V9 8.5 Pin 2 RF operation VTR operation (Pin 2 not connected; VTR operation) Pin 3 Pin 7 1 Vpp at Pin 3 resp. 2 Vpp at Pin 7 Pin 6 aIM 10 2.0 d (1.07 MHz intermodulation) relating to demodulated auxiliary colour carrier (figure 3) video carrier = 0 db video carrier = –6 db video carrier = –24 db f = 38.9 MHz f = 77.8 MHz Pin 12 10 250 mV below sync. (typ) 900 mV above ultra white level (typ) 5.9 V9 Bvideo ∆Vvideo % V MHz dB 3 3 % degree dB 15 10 mV 52 v % V12 2.4 VS V V12 0 1.9 V V2 V2 2.4 1.9 VS V V3 V7 1.4 2.5 V v6(pp) 2.0 V Note:4) Blanking level 30% carrier amplitude 4 (11) TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 TDA4452 Parameters Sync. pulse level Video switch bandwidth Output current Cross talk VTR output, Composite video output (inverted) Sync. pulse level Output current Test Conditions / Pins Pin 6 –3 dB Pin 6 V6 = 5 V Pin 6 v3 = 1 V Pin 6 50 Hz to 10 MHz sin v1–18 = 0 V, V2 = 0 V, V16 = 4 V Symbol V6 B I6 Min. Typ. 2.0 10 2.0 55 Max. Unit V MHz mA dB Pin 4 V7= 2 Vpp (peak to peak) V4 = 10 V v4(pp) V4 I4 2.0 VS – 2.6 2.0 V V mA Figure 2. Test circuit TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 5 (11) TDA4452 Figure 3. Test of intermodulation 6 (11) TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 TDA4452 Figure 4. Application circuit TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 7 (11) TDA4452 Pin 1,18 IF input Pin 2 Video switch Pin 4 VTR output Pin 3 VTR input Pin 6 Output video switch 8 (11) Pin 7 Input (from sound trap) TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 TDA4452 Pin 9 Video output Pin 10,11 Demodulator Pin 12 Standard switch Pin 13 Averaging (standard L only) Pin 16 IF ACC Pin 14,15 Tuner ACC TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 9 (11) TDA4452 Dimensions in mm Package: 18-pin dual inline plastic 10 (11) TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 TDA4452 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 TELEFUNKEN Semiconductors Rev. A1, 15-Aug-96 11 (11)