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STV6889 数据表(PDF) 12 Page - STMicroelectronics |
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STV6889 数据表(HTML) 12 Page - STMicroelectronics |
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12 / 56 page ![]() STV6889 12/56 Notes about horizontal section (continued) Note 8: The tph(max) parameter is fixed by the application. For correct operation of asymmetry corrections through dynamic phase modulation, this maximum must be reduced by maximum of the total dynamic phase required in the direction leading to bending of corners to the right. Marginal situation is indicated by reach of VBotHPLL2C low clamping level by waveform on pin HPLL2C. Also refer to Note 5 and Figure 6. Note 9: All other dynamic phase corrections of picture asymmetry set to their neutral (medium) positions. 6.5 Vertical section Table 2. Vertical section (Vcc = 12V, Tamb = 25°C) Symbol Parameter Test Conditions Value Units Min. Typ. Max. AGC-controlled vertical oscillator sawtooth; VRefO = 8V RL(VAGCCap) Ext. load resistance on VAGCCap pin(10) DVamp/Vamp(R=¥) £1% 65 M W VVOB Sawtooth bottom voltage on VCap pin(11) No load on VOscF pin(11) 2V VVOTref Sawtooth top voltage internal ref- erence 5V VVOT Sawtooth top voltage on VCap pin AGC loop stabilized 5 V tVODis Sawtooth Discharge time CVCap=150nF 80 ms fVO(0) Free-running frequency CVCap=150nF 100 Hz fVOCapt AGC loop capture frequency CVCap=150nF 50 185 Hz Sawtooth non-linearity(12)(17) AGC loop stabilized (12) 0.5 % Frequency drift of sawtooth amplitude(18)(19) AGC loop stabilized fVOCapt(min)£fVO£fVOCapt(max) 200 ppm/Hz Vertical output drive signal (on pin VOut); VRefO = 8V Vmidref Internal reference for vertical sawtooth middle point 3.5 V Vmid(VOut) Middle point on VOut sawtooth VPOS (Sad08h):(22) x0000000b x1000000b x1111111b VPOF (Sad1Eh):(21) x0000000b x1000000b x1111111b 3.65 3.1 3.45 3.8 3.3 3.45 3.6 3.3 V V V V V V Vamp Amplitude of VOut sawtooth (peak-to-peak voltage) VSIZE (Sad07h):(23) x0000000b x1000000b x1111111b VSAG (Sad1Dh):(20) x0000000b x1000000b x1111111b 3.5 2.25 3.0 3.75 2 2.5 3.0 2.5 V V V V V V VoffVOut Level on VOut pin at V-drive "off" I²C-bus bit VOutEn at 0 4.0 V V VOdev D V VOamp -------------------- VVOamp D V VOamp fVO D × ---------------------------------- |
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