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TDA4853 Datasheet(PDF) 20 Page - NXP Semiconductors |
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TDA4853 Datasheet(HTML) 20 Page - NXP Semiconductors |
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20 / 60 page  1999 Jul 13 20 Philips Semiconductors Product specification I2C-bus autosync deflection controllers for PC/TV monitors TDA4853; TDA4854 Output stage for line driver pulses: pin HDRV OPEN-COLLECTOR OUTPUT STAGE Vsat(HDRV) saturation voltage IHDRV =20mA −− 0.3 V IHDRV =60mA −− 0.8 V ILO(HDRV) output leakage current VHDRV =16V −− 10 µA AUTOMATIC VARIATION OF DUTY CYCLE tHDRV(OFF)/tH relative tOFF time of HDRV output; measured at VHDRV = 3 V; HDRV duty cycle is modulated by the relation IHREF/IVREF IHDRV = 20 mA; fH = 31.45 kHz; see Fig.16 42 45 48 % IHDRV = 20 mA; fH = 58 kHz; see Fig.16 45.5 48.5 51.5 % IHDRV = 20 mA; fH = 110 kHz; see Fig.16 49 52 55 % X-ray protection: pins XRAY and XSEL VXRAY(sl) slicing voltage level for latch 6.22 6.39 6.56 V tW(XRAY)(min) minimum width of trigger pulse −− 30 µs Ri(XRAY) input resistance at pin 2 VXRAY <6.38V+VBE 500 −− k Ω VXRAY >6.38V+VBE − 5 − k Ω standby mode − 5 − k Ω XRAYrst reset of X-ray latch pin 9 open-circuit or connected to GND set control bit SOFTST via the I2C-bus − pin 9 connected to VCC via RXSEL switch off VCC then re-apply VCC − VCC(XRAY)(min) minimum supply voltage for correct function of the X-ray latch pin 9 connected to VCC via RXSEL −− 4V VCC(XRAY)(max) maximum supply voltage for reset of the X-ray latch pin 9 connected to VCC via RXSEL 2 −− V RXSEL external resistor at pin 9 no reset via I2C-bus 56 − 130 k Ω 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 SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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