INTEGRATED CIRCUITS DATA SHEET TDA8303 TDA8303A Small signal combination IC for black/white TV Preliminary specification File under Integrated Circuits, IC02 July 1992
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV The IF amplifier is followed by a passive synchronous demodulator providing a regenerated carrier signal. This is limited by a logarithmic limiter circuit prior to its application to the demodulator. The limiter has a very low differential phase shift which results in good differential gain and phase figures.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV QUICK REFERENCE DATA 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 V8-9(RMS) IF sensitivity (RMS value) at 38.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Fig.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV PINNING TDA8303 TDA8303A Sound circuit PIN The sound quality of the TDA8303/TDA8303A compared with the predecessors has been improved at weak signal conditions. The improvement has been achieved by the new IF amplifier which is less sensitive for radiation from the sound IF amplifier and by change of the ground and supply connections in the IC.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV 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. Narrow window mode: divider ratio between 522 and 528 (60 Hz); or 622 and 628 (50 Hz).
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV CHARACTERISTICS VP = 12 V;Tamb = 25 °C; carrier 38.9 MHz negative modulation, unless otherwise specified SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply (pin 7) VP supply voltage range 9.5 12 13.2 V IP supply current no input 90 125 160 mA I11 start current (pin 11) note 1 − 6.5 9 mA V11 start voltage horizontal oscillator 9.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT S/N signal-to-noise ratio 10 mV input signal 50 57 − dB S/N signal-to-noise ratio end of gain control range 50 62 − dB V17 residual carrier signal − 2 10 mV V17 residual 2nd harmonic of carrier signal − 2 10 mV V8-9(RMS) minimum starting point for tuner take−over (RMS value) − − 0.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Sound circuit (note 12) V15 input limiting voltage − 400 800 µV R15 input resistance VO(max) = −3 dB − 2.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT SECOND CONTROL LOOP (POSITIVE EDGE) − 100 − − 25 − µs control sensitivity − 25 − µA/µs maximum allowed phase shift − ±2 − µs − 15625 − Hz δt d ------δt o control sensitivity td control range note 22 PHASE ADJUSTMENT (VIA SECOND CONTROL LOOP) α HORIZONTAL OSCILLATOR ffr free running frequency R = 34.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Vertical circuit (note 24) VERTICAL RAMP GENERATOR I2 input current during scan − − 2 µA I2 discharge current during retrace − 0.8 − mA V2(p−p) sawtooth amplitude (peak-to-peak value) − 1.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV TDA8303 TDA8303A connected to the supply. The reference circuit must be tuned in such a way that the output is symmetrical clipping at maximum volume. 13. The test set-up is illustrated by Fig.6. The AM rejection curve (typical) is illustrated by Fig.7. 14. The output signal is measured at a ∆f = 7.5 kHz and maximum volume control. 15. The demodulator tuned circuit must be tuned at minimum distortion. 16.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV handbook, full pagewidth MLA667 100% 95% 17.5% 30% Fig.2 Video output signal. handbook, full pagewidth MBC211 100% 86% 72% 58% 44% 30% 10 12 22 26 32 36 40 44 48 52 56 60 64 µs Fig.3 EBU test signal waveform (line 330).
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV handbook, full pagewidth PC 38.9 MHz SC 33.4 MHz Σ TEST CIRCUIT ATTENUATOR SPECTRUM ANALYZER gain setting adjusted for blue or yellow CC 34.5 MHz MLA666 3.2 dB handbook, full pagewidth 10 dB 13.2 dB 13.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV Fig.5 Signal-to-noise ratio as a function of the input voltage (0 dB = 100 mV). Fig.6 Test set-up AM suppression.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV Fig.7 AM suppression. Fig.8 Volume control characteristics.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV Fig.9 Timing diagram.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV Table 1 Switching levels coincidence detector CONDITION V22 CONTROL SENSITIVITY HORIZONTAL OSCILLATOR (kHz/µS) T2 - T1 T3 = SCAN strong signal 11.3 7.6 weak signal 1.3 1.3 strong signal 11.3 7.6 weak signal 11.3 7.6 V22 < 0.7 11.3 7.6 V22 > 6.7 V and 1 < V22 < 5.7 V and Fig.10 Switching levels coincidence detector. Fig.11 Anti-top-flutter pulse.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV Fig.12 Application diagram.
Philips Semiconductors Preliminary specification TDA8303 TDA8303A Small signal combination IC for black/white TV PACKAGE OUTLINE seating plane handbook, full pagewidthdual in-line package; 28 leads (600 mil) DIP28: plastic SOT117-1 ME D A2 L A A1 c e Z w M b1 (e 1) b MH 15 28 pin 1 index E 1 14 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 5.1 0.
Philips Semiconductors Preliminary specification Small signal combination IC for black/white TV TDA8303 TDA8303A SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used.
