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TDA9112 Fiches technique(PDF) 10 Page - STMicroelectronics |
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TDA9112 Fiches technique(HTML) 10 Page - STMicroelectronics |
10 / 51 page TDA9112 10/51 6.4 - HORIZONTAL SECTION Vcc = 12V, Tamb =25°C Symbol Parameter Test Condit ions Value Units Min. Typ. Max. PLL1 IRO Current load on RO pin 1.5 mA CCO Capacitance on CO pin 390 pF fHO Frequency of hor. oscillator 150 kHz fHO(0) Free-running frequency of hor. oscill. (1) RRO=5.23kΩ,CCO=820pF 27 28.5 29.9 kHz fHOCapt Hor. PLL1 capture frequency (4) fHO(0) = 28.5kHz 29 122 kHz Temperature drift of free-running freq. (3) -150 ppm/ °C ∆f HO/∆VHO Average horizontal oscillator sensitivity fHO(0) = 28.5kHz 19.6 kHz/V VHO H. oscill. control voltage on pin HPLL1F VRefO=8V 1.4 6.0 V VHOThrfr Threshold on H. oscill. control voltage on HPLL1F pin for tracking of EW with freq. VRefO=8V 5.0 V VHPosF Control voltage on HPosF pin HPOS (Sad01): 1111111xb 1000000xb 0000000xb 2.6 3.2 3.8 2.8 3.4 4.0 3.0 3.6 4.2 V V V VHOThrLo Bottom of hor. oscillator sawtooth(6) 1.6 V VHOThrHi Top of hor. oscillator sawtooth(6) 6.4 V PLL2 RIn(HFly) Input impedance on HFly input V(HFly) >VThrHFly (2) 300 500 700 Ω IInHFly Current into HFly input At top of H flyback pulse 5 mA VThrHFly Voltage threshold on HFly input 0.6 0.7 V VS(0) H flyback lock middle point(6) No PLL2 phase modula- tion 4.0 V VBotHPLL2C Low clamping voltage on HPLL2C pin(5) 1.6 V VTopHPLL2C High clamping voltage on HPLL2C pin(5) 3.9 4.05 4.2 V tph(min)/TH Min. advance of H-drive OFF before middle of H flyback(7) Null asym. correction 0 % tph(max)/TH Max. advance of H-drive OFF before middle of H flyback(8) Null asym. correction 44 % H-drive output on pin HOut IHOut Current into HOut output Output driven LOW 30 mA tHoff/TH Duty cycle of H-drive signal HDUTY (Sad00): x1111111b x0000000b Soft-start/S oft-stop value 27 65 85 % % % Picture geometry corrections throug h PLL1 & PLL2 tHph/TH H-flyback (centre) static phase vs. sync signal (via PLL1), see Figure 7 HPOS (Sad01): 1111111xb 0000000xb +11 -11 % % f HO 0 () ∆ f HO 0 () T ∆ ⋅ ----------------------------- |
Numéro de pièce similaire - TDA9112 |
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Description similaire - TDA9112 |
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