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TDA4841 Datasheet(PDF) 20 Page - NXP Semiconductors |
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TDA4841 Datasheet(HTML) 20 Page - NXP Semiconductors |
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20 / 60 page  1999 Oct 25 20 Philips Semiconductors Product specification I2C-bus autosync deflection controller for PC monitors TDA4841PS Vertical oscillator (oscillator frequency in application without adjustment of free-running frequency ffr(V)) ffr(V) free-running frequency RVREF =22kΩ; CVCAP = 100 nF 40 42 43.3 Hz fcr(V) vertical frequency catching range constant amplitude; note 7 50 − 160 Hz VVREF voltage at reference input for vertical oscillator − 3.0 − V td(scan) delay between trigger pulse and start of ramp at VCAP (pin 24) (width of vertical blanking pulse) control bit VBLK = 0 220 260 300 µs control bit VBLK = 1 305 350 395 µs IVAGC amplitude control current control bit AGCDIS = 0 ±120 ±200 ±300 µA control bit AGCDIS = 1 − 0 −µA CVAGC external capacitor at VAGC (pin 22) 150 − 220 nF Differential vertical current outputs ADJUSTMENT OF VERTICAL SIZE INCLUDING VGA AND EHT COMPENSATION; see Figs 3 to 7 VGAIN vertical size without VGA overscan (referenced to nominal vertical size) register VGAIN = 0; register VSIZE = 127; bit VOVSCN = 0; note 8 − 70 − % register VGAIN = 63; register VSIZE = 127; bit VOVSCN = 0; note 8 − 100 − % VSIZE vertical size without VGA overscan (referenced to nominal vertical size) register VSIZE = 0; register VGAIN = 63; bit VOVSCN = 0; note 8 − 60 − % register VSIZE = 127; register VGAIN = 63; bit VOVSCN = 0; note 8 − 100 − % VSIZEVGA vertical size with VGA overscan (referenced to nominal vertical size) register VSIZE = 0; register VGAIN = 63; bit VOVSCN = 1; note 8 − 70 − % register VSIZE = 127; register VGAIN = 63; bit VOVSCN = 1; note 8 115.9 116.8 117.7 % VSMOD EHT compensation on vertical size via VSMOD (pin 21) (referenced to 100% vertical size) Ii(VSMOD) =0 − 0 − % Ii(VSMOD) = −120 µA −−7 − % Ii(VSMOD) input current (pin 21) VSMOD = 0 − 0 −µA VSMOD = −7% −−120 −µA Ri(VSMOD) input resistance 300 − 500 Ω Vref(VSMOD) reference voltage at input − 5.0 − V fro(VSMOD) roll-off frequency ( −3 dB) Ii(VSMOD) = −60 µA+ 15 µA (RMS) 1 −− MHz SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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