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July 1992

Philips Semiconductors

Preliminary specification

Small signal combination IC for black/white TV

TDA8303

TDA8303A

Table 1

Switching levels coincidence detector

CONDITION

CONTROL SENSITIVITY

HORIZONTAL OSCILLATOR (kHz/

T2 - T1

T3 = SCAN

6.7 V

and

strong signal

11.3

7.6

weak signal

1.3

5.7 V

and

strong signal

11.3

7.6

weak signal

11.3

7.6

0.7

11.3

7.6

Fig.10 Switching levels coincidence detector.

Fig.11 Anti-top-flutter pulse.

Содержание TDA8303

Страница 1: ...DATA SHEET Preliminary specification File under Integrated Circuits IC02 July 1992 INTEGRATED CIRCUITS TDA8303 TDA8303A Small signal combination IC for black white TV ...

Страница 2: ...has a very low differential phase shift which results in good differential gain and phase figures The video amplifier also contains a white spot inverter and a noise clamp which limits interference pulses to a point below the peak sync level This circuit is more effective than a noise inverter and results in an improved picture stability with respect to interference AFC circuit The reference signa...

Страница 3: ...e results in a larger value of the minimum sync pulse amplitude The slicing level is independent of the video information SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Supply VP positive supply voltage pin 7 9 5 12 13 2 V IP supply current pin 7 90 125 160 mA Istart start current pin 11 note 1 6 5 9 mA Video V8 9 RMS IF sensitivity RMS value at 38 9 MHz note 2 20 40 65 µV G8 9 IF gain control range...

Страница 4: ...July 1992 4 Philips Semiconductors Preliminary specification Small signal combination IC for black white TV TDA8303 TDA8303A Fig 1 Block diagram ...

Страница 5: ...C When out of sync condition is detected by the coincidence detector the sound output is muted When no mute is required the minimum voltage level on pin 22 should be clamped to a high level of 5 V At this level the gating of the AGC is switched off and the phase 1 detector has a high output current for reliable catching of a new transmitter Vertical synchronization The TDA8303 TDA8303A embodies a ...

Страница 6: ...s of the horizontal sync During weak signal and synchronized conditions the time constant is enlarged and the phase detector is gated This ensures a stable display which is not disturbed by the noise in the video signal When the circuit is not synchronized the time constant is fast and not gated to ensure a short catching time Combination of DC volume control and start up feature Pin 11 of the IC ...

Страница 7: ...ntial input resistance note 3 1300 Ω C8 9 differential input capacitance note 3 5 pF G8 9 gain control range 74 dB V17 output signal expansion for 46 dB input signal variation note 4 1 dB V8 9 maximum input signal 100 170 mV Video Amplifier note 5 V17 zero signal output level note 6 5 4 V V17 peak sync level 2 3 2 5 2 7 V V17 video output signal amplitude note 7 2 3 2 65 3 0 V V17 white spot thres...

Страница 8: ... 4 mA V5 output saturation voltage I5 2 mA 300 mV IL leakage current pin 5 1 µA VI input signal variation complete tuner control 0 2 2 4 dB V1 minimum voltage tuner take over 1 V AFC circuit I19 AFC sample and hold switch off current 0 1 mA IO output current pin 19 V19 0 V 0 1 0 3 mA ILO output leakage current pin 19 2 µA V18 AFC output voltage swing notes 18 and 19 10 5 11 5 V I18 available outpu...

Страница 9: ... control 20 dB 0 5 dB S N signal to noise ratio note 16 47 dB V11 voltage with pin 11 disconnected 6 V I11 current with pin 11 short circuited to ground 1 mA V12 temperature dependence of the output signal amplitude Tamb 20 to 65 C 30 dB volume control and voltage of pin 11 fixed note 17 2 5 dB Volume control note 17 see Fig 8 R11 external control resistor note 17 4 7 kΩ OSS suppression of output ...

Страница 10: ...TAL OUTPUT PIN 26 OPEN COLLECTOR V26 output limiting voltage 16 5 V VOL LOW level output voltage Isink 10 mA 0 2 0 5 V Isink maximum sink current 10 mA duty factor of output signal 46 tr rise time of output pulse 260 ns tf fall time of output pulse 100 ns HORIZONTAL FLYBACK INPUT PIN 27 I27 required input current during flyback pulse 0 01 1 0 mA COINCIDENCE DETECTOR V22 voltage for in sync conditi...

Страница 11: ...re is valid for the complete video signal amplitude peak white to black see Fig 3 The non linearity is expressed as a percentage of the maximum deviation of a luminance step from the mean step with respect to the mean step 10 The test set up and input conditions are illustrated by Fig 4 The figures are measured at an input signal of 10 mV RMS 11 Measured with a source impedance of 75Ω 12 The sound...

Страница 12: ...signals are measured with a SAW filter OFW 1956 connected in front of the IC input signal such that the input signal of the IC is 150 µV RMS 20 The minimum value is obtained by connecting a 1 8 kΩ resistor between pins 17 and 25 The slicing level can be varied by changing the value of this resistor higher resistor value results in larger value of the minimum sync pulse amplitude The slicing level ...

Страница 13: ...all signal combination IC for black white TV TDA8303 TDA8303A Fig 2 Video output signal handbook full pagewidth MLA667 100 95 30 17 5 Fig 3 EBU test signal waveform line 330 handbook full pagewidth MBC211 100 86 72 58 44 30 64 60 56 52 48 44 40 36 32 22 12 10 26 µs ...

Страница 14: ...ier PC Picture carrier All with respect to top sync level Value at 1 1 MHz 20 log VO at 4 4 MHz VO at 1 1 MHz 3 6 dB Value at 3 3 MHz 20 log VO at 4 4 MHz VO at 3 3 MHz handbook full pagewidth MLA666 ATTENUATOR SPECTRUM ANALYZER TEST CIRCUIT CC 34 5 MHz PC 38 9 MHz SC 33 4 MHz Σ gain setting adjusted for blue or yellow handbook full pagewidth MBC213 SC CC PC 30 dB 13 2 dB 3 2 dB SC CC PC 30 dB 13 ...

Страница 15: ...lips Semiconductors Preliminary specification Small signal combination IC for black white TV TDA8303 TDA8303A Fig 5 Signal to noise ratio as a function of the input voltage 0 dB 100 mV Fig 6 Test set up AM suppression ...

Страница 16: ...July 1992 16 Philips Semiconductors Preliminary specification Small signal combination IC for black white TV TDA8303 TDA8303A Fig 7 AM suppression Fig 8 Volume control characteristics ...

Страница 17: ...July 1992 17 Philips Semiconductors Preliminary specification Small signal combination IC for black white TV TDA8303 TDA8303A Fig 9 Timing diagram ...

Страница 18: ...ble 1 Switching levels coincidence detector CONDITION V22 CONTROL SENSITIVITY HORIZONTAL OSCILLATOR kHz µS T2 T1 T3 SCAN V22 6 7 V and strong signal 11 3 7 6 weak signal 1 3 1 3 1 V22 5 7 V and strong signal 11 3 7 6 weak signal 11 3 7 6 V22 0 7 11 3 7 6 Fig 10 Switching levels coincidence detector Fig 11 Anti top flutter pulse ...

Страница 19: ...July 1992 19 Philips Semiconductors Preliminary specification Small signal combination IC for black white TV TDA8303 TDA8303A Fig 12 Application diagram ...

Страница 20: ...1 17 95 01 14 A min A max b Z max ME e1 1 7 1 3 0 53 0 38 0 32 0 23 36 0 35 0 14 1 13 7 3 9 3 4 0 25 2 54 15 24 15 80 15 24 17 15 15 90 1 7 5 1 0 51 4 0 0 066 0 051 0 020 0 014 0 013 0 009 1 41 1 34 0 56 0 54 0 15 0 13 0 01 0 10 0 60 0 62 0 60 0 68 0 63 0 067 0 20 0 020 0 16 051G05 MO 015AH MH c e 1 ME A L seating plane A1 w M b1 e D A2 Z 28 1 15 14 b E pin 1 index 0 5 10 mm scale Note 1 Plastic o...

Страница 21: ...he package below the seating plane or not more than 2 mm above it If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds If the bit temperature is between 300 and 400 C contact may be up to 5 seconds DEFINITIONS LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances devices or systems where malfunction of ...

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