Multimedia ICs SYNC separator IC with AFC BA7062F The BA7062F separates the synchronization signals from a video signal and outputs the horizontal and vertical synchronization signals (HD and VD), and the composite synchronization signal (Sync-out). The HD and VD pulse widths are different. •TVsApplications and VCRs •1)Features Built-in AFC circuit. 4) SOP 8-pin package. 5) Horizontal free-run frequency does not require adjustment. 2) Low power dissipation (approx. 21mW). 3) Low external parts count. •Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Symbol VCC Max. Limits Unit 8.0 V mW Pd 350∗ Operating temperature Topr – 20 ~ + 75 °C Storage temperature Tstg – 55 ~ + 125 °C Power dissipation ∗ When mounted on a 50mm × 50mm PCB, reduced by 3.5mW for each increase in Ta of 1°C over 25°C. •Recommended operating conditions (Ta = 25°C) Parameter Operating power supply voltage Symbol Min. Typ. Max. Unit VCC 4.5 — 5.5 V •Block diagram 1 H.OSC PHASE COMP 2 7 SYNC SEPA 3 4 8 V.SEPA 6 5 1 Multimedia ICs BA7062F •Pin descriptions Function Pin No. 1 Horizontal oscillator resistor 2 HD output 3 SYNC output (open collector) 4 VD output 5 GND 6 Video input 7 Power supply 8 Phase comparator output •Input / output circuits VCC VCC 200 12k 3pin 200 2pin 1k 5k 1pin 100µA Fig. 1 Fig. 3 Fig. 2 VCC 3k 3k 3k VCC VCC 10k 1k 8pin 200 4pin 100 6pin 10µA Fig. 4 2 Fig. 5 3k 3k 3k Fig. 6 Multimedia ICs BA7062F •Electrical characteristics (unless otherwise noted, Ta = 25°C and V Parameter Symbol Min. Quiescent current Typ. Max. Unit CC = 5V) Conditions IQ 2.0 4.1 6.2 mA Pin 3 open Pin 6 terminated with 75Ω resistor Vsyn-Min. — 0.08 0.15 VP-P Pulse voltage, Low VP-L — 0.1 0.3 V 2, 4 pin Pulse voltage, High VP-H 4.7 4.9 — V 2, 4 pin (Horizontal) free-running frequency fH-O 13.9 15.7 17.5 kHz Capture range ∆fCAP ± 2.1 ± 2.9 — kHz Lock-in phase THPH – 1.0 + 1.0 µs 2pin HD pulse width THD 10.5 11.5 12.5 µs 2pin VD pulse width TVD 200 260 320 µs 4pin Minimum SYNC separation level 0 No input signal, I1 = open — – 6pin 䊊 Not designed for radiation resistance. •Measurement circuit 0.022µ Video In 47µ 1µ + 1µ 39k 2200p 75 + VCC 1µ A + 8 7 6 5 1 2 3 4 470k 130k II V T V 10k VCC T V T 100p Fig. 7 operation •(1)Circuit Synchronization separation circuit Detects the charging current to a externally-connected capacitor, and performs synchronization separation. (2) Horizontal oscillation circuit When a video signal is input, it is synchronized with Hsync by the PLL. The horizontal free-running frequency is determined by external resistor R1. fH-O = (3) Vertical synchronization separation circuit When a video signal is input, synchronization signal separation is done over the vertical synchronization pulse interval. 2.05E6 [kHz] R1 3 Multimedia ICs •V , H , and V IN D D BA7062F timing charts Vertical synchronizing pulse interval NTSC signal Odd-number field (IN) NTSC signal Even field (IN) VD (OUT) HD Odd field (OUT) HD Even field (OUT) Fig. 8 (1) The rise and fall positions for VD are basically the same for both odd and even fields. (2) HD shifts by 1 / 2H during the odd and even field interval. 4 1 / 2H Multimedia ICs BA7062F •Application example ∗ R2 R1 C4 C2 R3 470k VCC = 5V 10k VCC = 5V 100p 1 PHASE COMP H.OSC 10k HD 2 SYNC 3 2200p 130k 8 47µ C6 0.022µ 1µ C1 SYNC SEPA 6 V.SEPA R4 1µ + 5 R2 470k ∗ By configuring the circuit enclosed in the dotted line to that in the Vsig 330 470k 1000p 4 + C5 C3 7 R5 VD + C7 VCC + diagram on the right, you can decrease the lock-in time and increase the capture range. R3 10k C3-1 0.47µ 8 + C2 2200p C3-2 0.47µ Fig. 9 • When SYNC SEPA output only is used. HD and VD unused. VCC = 5V R1 VCC = 5V + C5 120k H.OSC HD 2 SYNC 3 47µ 8 SYNC SEPA C1 6 + R5 VD 4 C6 0.022µ 7 5 V.SEPA R4 1µ Vsig 330 470k 1000p 1 10k PHASE COMP C7 Fig. 10 (1) Connect pin 1 to GND via a 120kΩ (approx.) resistor. Leave pins 2, 4 and 8 open. (2) SYNC output polarity (pin 3) is positive. (3) The delay time for rising edge of the SYNC output (pin 3) with respect to the falling edge of Sync for the Vsig input signal (pin 6) is 850ns (reference value). (4) The delay time for falling edge of the SYNC output (pin 3) with respect to the rising edge of Sync for the Vsig input signal (pin 6) is 450ns (reference value). Attached components •Resistor R should have a tolerance of ± 2%, and a temperature coefficient of 100ppm or lower. 1 5 Multimedia ICs BA7062F •Electrical characteristic curves 16.4 6.0 6 5.5 5 5.0 ICC CURRENT (mA) ICC CURRENT (mA) HORIZONTAL FREQUENCY (kHz) VCC = 5V 4 3 2 4.5 4.0 3.5 3.0 1 4.0 – 25 6.0 5.0 16.6 0 25 50 75 16.0 15.8 15.6 15.4 290 11.6 11.4 11.2 11.0 0 25 50 240 75 – 25 100 25 50 75 100 Fig. 16 VD pulse width vs. temperature 300 VCC = 5.0V 15 – cap – lock 10 5.5 POWER SUPPLY VOLTAGE (V) Fig. 17 Capture range / lock range vs. power supply voltage + lock 20 VCC = 5.0V fLOCK = 15.734kHz SIGNAL - LOCK IN TIME (ms) FREQUENCY: f (cap. lock) (kHz) + cap 5.0 0 TEMPERATURE (°C) Fig. 15 HD pulse width vs. temperature + lock FREQUENCY: f (cap. lock) (kHz) 250 TEMPERATURE (°C) Fig. 14 Horizontal free-running frequency vs. temperature 4.5 260 220 – 25 TEMPERATURE (°C) 20 270 230 10.6 100 NTSC VCC = 5.0V 280 10.8 75 5.5 5.0 Fig. 13 Horizontal free-running frequency vs. power supply voltage VD PULSE WIDTH (µS) 16.2 15.2 6 4.5 POWER SUPPLY VOLTAGE (V) NTSC VCC = 5.0V 11.8 HD PULSE WIDTH (µS) HORIZONTAL FREQUENCY (kHz) 16.4 50 15.4 100 12.0 VCC = 5.0V 25 15.6 Fig. 12 Quiescent current vs. temperature Fig. 11 Quiescent current vs. power supply voltage 0 15.8 TEMPERATURE (°C) POWER SUPPLY VOLTAGE (V) – 25 16.0 15.2 2.5 0 16.2 + cap 15 – cap – lock 200 100 0 10 – 25 0 25 50 75 100 TEMPERATURE (°C) Fig. 18 Capture range / lock range vs. temperature 13 14 15 16 17 18 19 FREQUENCY (kHz) Fig. 19 Time from no signal to pull in 20 Multimedia ICs BA7062F 700 POWER LOCK IN TIME (ms) VCC = 5.0V fLOCK = 15.734kHz 600 500 400 300 200 100 0 13 14 15 16 17 18 19 20 FREQUENCY (kHz) Fig. 20 Time from power on to pull in notes •• Operation Make the ground line as thick as possible. • Keep power supply noise to a minimum. •External dimensions (Units: mm) 1 4 0.11 1.27 0.15 ± 0.1 4.4 ± 0.2 5 1.5 ± 0.1 6.2 ± 0.3 5.0 ± 0.2 8 0.4 ± 0.1 0.3Min. 0.15 SOP8 7