NTE1632 integrated circuit vertical/horizontal sync separator description: the NTE1632 separates the horizontal and vertical sync pulses from the composite tv video signal and uses them to synchronize vertical and horizontal oscillators. the NTE1632 is supplied in a 18 ? lead dip type package. features: horizontal sync separator & noise inverter horizontal oscillator horizontal phase detector (sync to oscillator) horizontal output stage inhibit of horizontal phase detector & video transmitter identification circuit during vertical oscil- lator flyback stabilizer & supply circuit for staring the horizontal oscillator & output stage directly from the mains rectifier duty factor of horizontal output pulse is 50% when flyback pulse is absent vertical sync separator vertical comparator with internal 3% precorrection circuit for vertical oscillator/sawtooth generator vertical driver stage vertical blanking pulse generator with external adjustment of pulse duration (50hz: 21 lines: 60hz: 17 lines) vertical guard circuit bandgap 6.5v reference voltage for vertical oscillator & comparator synchronized vertical oscillator/sawtooth generator (synchronization inhibited when no video transmitter is detected) time constant switch for phase detector (fast time constant during catching) slow time constant for noise only conditions time constant externally switchable (e.g. fast for vcr) second phase detector for storage compensation of horizontal deflection stage sandcastle pulse generator (3 levels) video transmitter identification circuit internal circuit for 3% parabolic precorrection of the oscillator/sawtooth generator. comparator supplied with precorrected sawtooth & external feedback input parameter symbol min typ max unit supply: minimum current required to start horizontal oscillator & output stage (pin 16) i 16 ? >4 ? ma
parameter unit max typ min symbol main supply voltage (pin 10) v p = v 10 ? 9 ? 12 ? v supply current i p = i 10 ? 55 ? ma input signals: sync pulse input voltage (peak ? to ? peak value; negative going) v 5 ? 9(p ? p) 0.15 to 1v output signals: horizontal output pulse (open collector) at i 11 = 40ma v 11 ? 9 ? <0.5 ? v vertical output pulse (emitter ? follower) at i 1 = 10ma v 1 ? 9 ? >4 ? v ratings: start current (pin 16) i 16 ? ? 8 ma supply voltage (pin 10) v p = v 10 ? 9 ? ? 13.2 v total power dissipation t tot ? ? 1.1 w storage temperature range t stg ? 55 to +150 c operating ambient temperature range t amb ? 25 to +65 c thermal resistance: from junction to ambient in free air r th j ? a ? 50 ? kw characteristics: i 16 = 5ma: v p = 12v: t amb = 25 c (unless otherwise indicated) supply: supply current at pin 16 i 16 4 to 8 ma stabilized supply voltage (pin 16) v 16 ? 9 ? 8.7 ? v supply current (pin 10) i 10 ? 55 ? ma s upp l y c urrent (pi n 10) i 10 ? <70 ? ma supply voltage (pin 10) v = v 10 9 ? 12 ? v s upp l y v o l tage (pi n 10) v p = v 10 ? 9 10 to 13.2 v video input (pin 5): to p sync level v 5 9 ? 3.1 ? v t op ? s ync l eve l v 5 ? 9 1.5 to 3.75 v sync pulse amplitude (peak to peak value) (note 1) v 5 9( ) ? 0.6 ? v s ync p u l se a mp li tu d e (p ea k ? to ? p ea k v a l ue ) (n ote 1) v 5 ? 9(p ? p) 0.15 to 1 v slicing level ? 50 ? % sli c i ng l eve l ? 35 to 65 % delay between video input & detector output t 1 ? 0.35 ? s noise gate (pin 5): switching level v 5 9 ? 0.7 ? v s w i tc hi ng l eve l v 5 ? 9 ? <1 ? v first control loop (sync to oscillator: pin 8) holding range ? f ? 800 ? hz catching range ? f 600 to 1100 hz control sensitivity video with respect to oscillator, burst key & fly- back pulse (for slow time constant) ? 1 ? khz/ s back p u lse (for slo w time constant) (for fast time constant) ? ? 275 ? khz/ s
parameter unit max typ min symbol second control loop: p (horizontal output to flyback: pin 14) control sensitivity; static (note 2) ? t d / ? t o ? 400 ? s/ s control range t d 1 to 50 s controlled edge negative phase adjustment (via 2nd control loop; pin 14) control sensitivity ? 25 ? a/ s maximum permissible control current i 14 ? <50 ? a horizontal oscillator (pin 15): frequency (no sync) f osc ? 15625 ? hz frequency spread (c osc = 2.2nf; r osc = 40k ? ) ? f osc ? <4 ? % frequency deviation between starting point of output signal & sta- bilized condition ? f osc ? 6 < 8 ? % temperature coefficient tc ? 1.10 ? 4k ? 1 ? ? horizontal output (pin 11) output voltage; high level v 11 ? 9 ? <13.2 ? v voltage at which protection starts v 11 9 ? 0.3 ? v v o l tage at w hi c h p rotect i on s tarts v 11 ? 9 ? 0.5 ? v output voltage; low level start condition at i 11 = 10ma v 11 9 ? 0.3 ? v start condition at i 11 = 10ma normal condition at i 11 = 40ma v 11 ? 9 ? 0.5 ? v duty factor of output signal during starting (no phase shift; voltage at pin 11 low) ? ? 65 ? % duty factor of output signal without flyback pulse ? 50 ? % d uty f actor o f o utput si gna l w i t h out fl y b ac k p u l se ? 45 to 55 % controlled edge negative s g duration of output pulse (fig 3) n egat i ve t d +t o + 2.5 s sandcastle output pulse (pin 17): output voltage during: burst key v 18 ? 9 ? >10 ? v horizontal blanking v 17 9 ? 4.6 ? v h or i zonta l bl an ki ng v 17 ? 9 4.2 to 5 v vertical blanking v 17 9 ? 2.5 ? v v ert i ca l bl an ki ng v 17 ? 9 2 to 3 v pulse duration burst key t p ? 4 ? s horizontal blanking flyback pulse (note 3) ? ? ? ? vertical blanking for 50hz application ( ? i 12 : 0 to 0.1ma) for 60hz application ( ? i 12 : typ ? .2ma) ? ? 21 17 ? lines delay between the start of the sync at the video input & the risin g t 2 ? 4.9 ? s delay between the start of the sync at the video input & the rising edge of the burst key pulse t 2 4.5 to 5.3 s
parameter unit max typ min symbol coincidence detector: video transmitter id circuit; time constant switches (pin 18) (see fig 2) detector output current i 18 ? 300 ? a voltage during noise (note 4) v 18 ? 9 ? 0.3 ? v voltage level for in ? sync condition v 18 ? 9 ? 7.5 ? v switching level slow to fast v 18 9 ? 3.5 ? v s w i tc hi ng l eve l sl ow to f ast v 18 ? 9 3.2 to 3.8 v switching level must function active; 1 fast to slow v 8 9 ? 1.2 ? v s w i tc hi ng l eve l m ust f unct i on a ct i ve; 1 f ast to sl ow v 8 ? 9 1.0 to 1.4 v vertical period counter 3 periods fast v 18 9 ? 0.12 ? v v ert i ca l p er i o d c ounter 3 per i o d s f ast v 18 ? 9 0.08 to 0.16 v switchin g level slow to fast (lockin g ) mute function v 18 9 ? 1.7 ? v switching level slow to fast (locking) mute function inactive v 18 ? 9 1.5 to 1.9 v switching level fast to slow (locking) v 18 9 ? 5.0 ? v s w i tc hi ng l eve l f ast to sl ow (l oc ki ng ) v 18 ? 9 4.7 to 5.3 v switchin g level for vcr (fast time constant) v 18 9 ? 8.6 ? v switching level for vcr (fast time constant) without mute function v 18 ? 9 8.2 to 9.0 v video transmitter id output (pin 13) output voltage active (no sync) at i 13 = 1ma v 13 9 ? >10 ? v o utput v o l tage a ct i ve (n o s ync ) at i 13 = 1 m a v 13 ? 9 ? 11 ? v output voltage active (no sync) at i 13 = 5ma v 13 ? 9 ? >7 ? v output voltage inactive v 13 9 ? <0.5 ? v o utput v o l tage i nact i ve v 13 ? 9 ? 0.1 ? v vcr switching (pin 13): input current for fast time constant phase detector 1 , with mute function active i 13 ? 0.6 ? ma function active 0.4 to 0.8 input pulse amplitude (peak ? to ? peak value) v 12 ? 9 (p ? p) ? <12 ? v input resistance r 12 ? 9 ? 2.7 ? k ? delay time of sync pulse (measured in 1 ) t o ? 1.3 ? s duration of vertical blanking pulse (pin 12) ? 0.2 ? for 50hz application; 21 lines blanking f 60h li ti 17 li bl ki ? i 12 >0.15 to <0.3 ma for 60hz application; 17 lines blanking 12 ? <0.1 ? maximum allowed input current ? i 12 ? <0.4 ? ma vertical sawtooth generator (pin 3): vertical frequency (no sync) f s ? 46 ? hz frequency spread (c osc = 680nf, r osc = 180k? at >26v) ? f s ? <4 ? % sychronization range ? ? 22 ? % input current at v 3 ? 9 = 6v i 3 ? <2 ? a frequency shift for v p = 10 to 13v ? f s ? <0.2 ? % temperature coefficient tc ? 1.10 ? 4k ? 1 ? ? comparator (pin 2):
parameter unit max typ min symbol input voltage; dc level v 2 9 ? 4.4 ? v i nput v o l tage; dc l eve l v 2 ? 9 4.0 to 4.8 v ac level (peak ? to ? peak) v 2 ? 9(p ? p) ? 1.6 ? v input current at v 2 ? 9 = 6v i 2 ? <2 ? a sawtooth internal precorrection (parabolic convex) ? ? 3 ? % vertical output stage: emitter follower (pin 1) output voltage at i 1 = 10ma v 1 9 ? 3.6 ? v o utput v o l tage at i 1 = 10 m a v 1 ? 9 3.2 to 5 v output current i 1 ? <20 ? ma vertical guard circuit: activating voltage levels (vertical blanking level is 2 5v) v 2 9 3 v (vertical blanking le v el is 2 . 5v) switching level low v 2 ? 9 ? 3 f v switching level high v 2 9 f 5.7 ? v s w i tc hi ng l eve l hi g h v 2 ? 9 5.3 to 6.1 v note 1 up to 1v peak ? to ? peak the slicing level is constant; at amplitudes exceeding 1v peak ? to ? peak, the slicing level will increase. note 2 t d = delay between negative transient of horizontal output pulse and the rising edge of the flyback pulse. t o = delay between the rising edge of the flyback pulse and the start of the current in 1 ( pin 8). note 3 the duration of the flyback pulse is measured at the input switching level which is about 1v (t f1 ). note 4 depends on dc level at pin 5; value given applicable for v 5 ? 9 5v. v cc 1 2 3 4 vertical drive vertical feedback vertical frequency vertical sync 5 video input 6 horizontal sync 7 sync slicer 18 17 16 15 coincidence sandcastle output start circuit horizontal 14 phase detector 13 video transmitter 12 horizontal flyback NTE1632 8 slow phase detector 11 horizontal drive 9 gnd 10 id & mute output adjust separator separator detector stabilizer frequency adjust pin connection diagram 19 18 10 .870 (22.1) max .800 (20.3) .100 (2.54) .125 (3.17) min .250 (6.35) .150 (3.8)
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