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MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR

DESCRIPTION

The M52347 automatically selects three types of synchronous signals containing separate sync (positive and negative polarities of 0.5 to 2.5 V P-P ), composite sync (positive and negative polarities of 0.5 to 2.5 V P-P ) and sync-on-video (sync negative polarity), and performs waveform shaping. The IC is optimum to synchronous signal processing for multi-scan type display monitor.

FEATURES

Low power consumption with supply voltage of 5V Capable of obtaining output information on whether to input syn- chronous signal, and on polarity Output of clamp pulse Equipped with V TIME GATE SW that enables selecting whether or not VD portion pulse is output from pin / . Equipped with CLAMP SW that enables switching the clamp pulse output position. APPLICATION Display monitor RECOMMENDED OPERATING CONDITION BLOCK DIAGRAM PIN CONFIGURATION (TOP VIEW) 14 15 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 COMP/H IN H. STATE COMP/H DET V. STATE CLAMP SW GREEN IN V TIME GATA SW VD + OUT V S/S OUT GND V DET V IN H. POL. CLAMP + OUT V CC HD - OUT HD + OUT V S/S IN CLAMP GET EDGE SW CLAMP TIMING Y. POL. H DET V. SYNC SEP V. TIME GATE LOGIC H SHAPE V SHAPE V DET SYNC SEP LOGIC Outline 20P4B(SP) 165 156 129 1110 M52347SP/FP CLAMP TIMING Y. POL. H. POL. CLAMP + OUT VCC HD + OUT VD + OUT V S/S OUT V S/S IN HD - OUTCOMP/H IN H. STATE COMP/H DET V. STATE CLAMP SW GREEN IN V TIME GATE SW GND V DET V IN 20P2N-A(FP)

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted)

ELECTRICAL CHARACTERISTICS

(Ta=25˚C, Vcc=12V, unless otherwise noted) Symbol Parameter Ratings Unit V CC Supply voltage 6.0 V Pd Power dissipation 1237.6(SP),827.8(FP) mW S urge Electrostatic discharge 200 V T opr Operating temperature -20 to +85 ˚C T stg Storage temperature -40 to +150 ˚C Symbol Parameter Relay condition TP conditionIn put pin Input condition Out put pin Output waveform Note Limits Unit 4 6 8 16 3 10 Min. Typ. Max. Circuit current I CC 2222 5 V 5 V A 4 0 5 3 6 6 m A

1 OH Pin output

2.5V 50kHz P-P 50kHz P-P DC 4.0 5.0 5.0 V

1 OL Pin output

2.5V 50kHz 0.2V P-P 50kHz 1.0V P-P DC 0.2 V P-P of input signal is equiv- alent to NON SYNC. 0 0.04 0.5 V

2 OH Pin output

2.5V 50kHz P-P 50kHz P-P DC 4.0 5.0 5.0 V

2 OL Pin output

2.5V 50kHz 1.0V P-P 50kHz 0.2V P-P DC 0.2 V P-P of input signal is equiv- alent to NON SYNC. 0 0.04 0.5 V

18 OH Pin output

2.5V 50kHz P-P 50kHz P-P DC 4.0 5.0 5.0 V

18 OL Pin output

2.5V 50kHz P-P 50kHz P-P DC 0 0.04 0.5 V

19 OH Pin output

2.5V 50kHz P-P 50kHz P-P DC 4.0 5.0 5.0 V

19 OL Pin output

2.5V 50kHz P-P 50kHz P-P DC 0 0.04 0.5 V

14 OH Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 4.0 5.0 5.0 V

14 OL Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 0 0.25 0.5 V

14 V Meas

The true value table depends on Table 1. m S m S m S m S m S m S m S m S m S m S m S m S m S m S m S m S m S m S m S m S

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR (cont.) Symbol Parameter Relay condition TP conditionIn put pin Input condition Out put pin Output waveform Note Limits Unit 4 6 8 16 3 10 Min. Typ. Max.

15 OH Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 4.0 5.0 5.0 V

15 OL Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 0 0.25 0.5 V

17 OH Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 4.0 5.0 5.0 V

17 OL Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 0 0.25 0.5 V

13 OH Pin output

2.5V 5V 50kHz P-P 4.0 5.0 5.0 V

13 OL Pin output

2.5V 5V 50kHz P-P 0 0.25 0.5 V

12 OH Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 4.0 5.0 5.0 V

12 OL Pin output

2.5V 50kHz 0.6V P-P 50kHz P-P 0 0.25 0.5 V SS-NV Sync-Sep Sync input signa Max. noise ampli- tude voltage 1221 2.5V 5V 50kHz 0.05V P-P No pulse must be output. Must not oper- ate when input amplitude is 0.05 V P-P or less. (Pseudo noise signal) - - 0.05 V P-P SS-LV Sync-Sep Sync input signal Min. ampli- tude voltage 1221 2.5V 5V 50kHz 0.2V P-P No pulse must be output in this por- tion. Must operate when the input amplitude is 0.2 V P-P or more. 0.2 - - V P-P V3H CLAMP SW Threshold voltage H 2121 5 V DC voltage must be applied. Checking output pulse for output with a voltage of

5 VDC applied,

not output. 2.8 3.1 3.4 V 50kHz 2VP-P V3L CLAMP SW Threshold voltage H Variable 2121 5 V DC voltage must be applied. Checking output pulse for output with a voltage of

0 VDC applied,

not output. 1.0 1.3 1.6 V 50kHz 2VP-P V10 V TIME GATE SW Threshold voltageVari- able 2111 50kHz 2VP-P 50kHz P-P Checking output pulse for output with a voltage of becomes narrow. 2.0 2.5 3.0 V DC voltage must be applied. 8 13 8 13 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS V Meas V Meas V Meas V Meas V Meas V Meas V Meas V Meas 1mS 1mS 1mS 1mS 50kHz VariableVariable Variable

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR ELECTRICAL CHARACTERISTICS (cont.) Symbol Parameter Relay conditionTP conditionIn put pin Input condition Out put pin Output waveform Note Limits Unit 4 6 8 16 3 10 Min. Typ. Max. HD +-DA HD +-delay time (A) 1121 50kHz 0.6VP-P 50kHz P-P Input (50%) Output (50%) - 120 350 nsec HD +-DB HD +-delay time (B) 1121 50kHz 0.6VP-P 50kHz P-P Input (50%) Output (50%) - 80 350 nsec HD +-DC HD +-delay time (C) 1121 2.5V 5V 50kHz 0.6VP-P 50kHz P-P Input (50%) Output (50%) - 140 350 nsec HD +-DD HD +-delay time (D) 1121 2.5V 5V 50kHz 0.6VP-P 50kHz P-P nput (50%) Output (50%) - 120 350 nsec HD --DA HD --delay time (A) 1121 50kHz 0.6VP-P 50kHz P-P nput (50%) Output (50%) - 70 350 nsec HD --DB HD --delay time (B) 1121 50kHz 0.6VP-P 50kHz P-P nput (50%) Output (50%) - 120 350 nsec HD --DC HD --delay time (C) 1121 2.5V 5V 50kHz 0.6VP-P 50kHz P-P Input (50%) Output (50%) - 100 350 nsec HD --DD HD --delay time (D) 1121 2.5V 5V 50kHz 0.6VP-P 50kHz P-P Input (50%) Output (50%) - 150 350 nsec CP +-DA CP +-delay time (A) 1121 0V 5V 50kHz 0.6VP-P 50kHz P-P nput (50%) Output (50%) - 90 350 nsec CP +-DB CP +-delay time (B) 1121 2.5V 5V 50kHz 0.6VP-P 50kHz P-P nput (50%) Output (50%) - 130 350 nsec CP +-DC CP +-delay time (C) 1121 5V 5V 50kHz 0.6VP-P 50kHz P-P nput (50%) Output (50%) - 90 350 nsec CP +-PW CP +-PULSE -WIDTH 1121 2.5V 50kHz 0.6VP-P 50kHz P-P Output (50%) 250 400 550 nsec Time Meas 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS 1mS Time Meas Time Meas Time Meas Time Meas Time Meas Time Meas Time Meas Time Meas Time Meas Time Meas Time Meas

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR ELECTRICAL CHARACTERISTICS (cont.) Symbol Parameter Relay conditionTP conditionIn put pin Input condition Out put pin Output waveform Note Limits Unit 4 6 8 16 3 10 Min. Typ. Max. VD +-DA VD + -delay time (A) 2211 2.5V 5V 50kHz 2VP-P Input (50%) Output (50%) - 100 350 nsec VD +-DB VD + -delay time (B) 2211 2.5V 5V 50kHz 2VP-P Input (50%) Output (50%) - 70 350 nsec V11H V Sync-Sep Threshold voltage H 2121 50kHz 2VP-P Checking output pulse for output with a voltage of not output. 3.0 3.5 4.0 V DC voltage must be applied. V11L V Sync-Sep Threshold voltage L 2121 50kHz 2VP-P Checking output pulse for output with a voltage of output. 1.3 1.8 2.3 V DC voltage must be applied. 8 13 8 13 1mS 1mS 1mS 1mS Time Meas Time Meas

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR TEST CIRCUIT 111 615 516 219 120 CLAMP V. POL. H. POL. CLAMP + OUT VCC HD + OUT VD + ONT V S/S OUT V S/S IN HD - OUT COMP/H IN H. STATE COMP/H DET V. STATE CLAMP SW GREEN IN V TIME GND V DET V IN TIMING GATA SW V11 100p 43k TP13 TP14 TP15 TP17 TP18 0.01m 47m 220p 4.3k TP19 R16 TP1 TP2 TP2 3.3m 10m 4.7m 75k R6 2 0.0068m 4.7m R8 V10 : 5V Units Resistance : W Capacitance : F A

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR DESCRIPTION OF PIN Pin No. Name Pin voltage Peripheral circuit of pins Description of function H.STATE 0 VDC or

5 VDC

Logic output pin for horizontal synchro- nous signal When pin input signal is POSI, outputs "H"; when NON, outputs "L"; and when NEG, outputs "H". V.STATE 0 V DC or

5 VDC Same as pin

Logic output pin for vertical synchronous signal When pin input signal is POSI, outputs "H"; when NON, outputs "L"; and when NEG, outputs "H". CLAMP SW »2.2V when open This SW is available to change the gener- ating position of clamp pulse for input sig- nal. (See Table 2.) VTH L =0 to1V VTH M =1.6 to 2.8V VTH H =3.4 to 5V GREEN IN »2.8V when open GREEN (SYNC ON VIDEO) input pin Input with negative sync. Comparison of pin input signal and ref- erence voltage within the IC performs synchronous separation. GND Grounding COMP/H IN »2.5V when open Composite sync/H sync input pin. Bias is approx. 2.5V and impedance is 10kW . The internal double threshold comparator is used for shaping waveform and detect- ing polarity. Optimum input amplitude is 0.6 Vp-p at pin . Up to approx. 50% of duty, waveform shaping and polarity detection can be done. COMP/H DET »2.5V when open (no sig- nal) External capacitance is required as a ﬁl- ter pin for detecting polarity and detecting non-input. As the value is larger, the rip- ple is smaller and less malfunction occurs. However, this lowers the response speed of detection. V IN »2.5V when open Same as pin V sync input pin Same as pin V DET »2.5V when open (no signal) Same as pin Same as pin 1 6 2 1 8 4 4 8 6 9 7 7 20 kW 1kW1kW 3.5V 1.5kW20kW 1.5kW 20kW 10kW10kW10kW 2.8V 2.5V 2.2V 0.3mA 0.3mA 3.1V 28kW 0.1mA 1.3V 22kW20kW 20kW 2.8V 12kW 2.5V 12kW 75kW 2.2V20kW 20kW

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR DESCRIPTION OF PIN (cont.) Pin No. Name Pin voltage Peripheral circuit of pins Description of function V.TEME GATE SW »3.2V when open V TIME GATE SW pin Can select whether to output the pulse of VD portion from pin , output pluse. The threshold voltage is approx. 2.5V. V TH L=0 to 2V VTH H=3 to 5V V S/S IN V S/S IN pin Inputs a signal of having externally inte- grated composite sync for V sync separa- tion. V S/S OUT V S/S pulse output pin No problem occurs when current of approx. 6 mA ﬂows to internal part of the IC. To improve the rising speed, connect a resistance between power supplies. VD +OUT Same as pin VD + pulse output pin Same as pin HD +OUT Same as pin HD + pulse output pin Same as pin HD -OUT Same as pin HD - pulse output pin Same as pin VCC 5V Power supply CLAMP + OUT Same as pin CLAMP + pulse output pin Same as pin H.POL. 0 VDC or Logic output pin for horizontal synchro- nous signal When pin input signal is POSI, outputs "L"; when NON, outputs "L"; and when NEG, outputs "H". V.POL. 0 V DC or Logic output pin for vertical synchronous signal When pin input signal is POSI, outputs "L"; when NON, outputs "L"; and when NEG, outputs "H". CLAMP TIMING CLAMP TIMING pin The clamp pulse width is determined depending on the external resistance and capacitance. As the resistance value and capacitance value are larger, the clamp pulse width is wider. 14 15 13 12 14 12 15 12 17 12 18 1 6 19 1 8 1kW 3.0V 1.9V 20kW 1kW 1kW5.5kW 0.1mA 7.5kW 4kW 1.75kW 0.2mA 0.2mA 4kW 0.4mA 1.9V 0.2mA 4kW 102.5V 30kW 0.1mA 20kW

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR Table 1 DECODER Logic Output Table 2 Clamp Pulse Position Pin input COMP/H Pin Input V Output pin POSI. NON POSI. NEG. H H H L H H L L L L L H NEG. NON POSI. NEG. H H H L H H H H H L L H NON. NON POSI. NEG. L L L L H H L L L L L H 6 8 1 2 18 19 Input signal Pin 17 output signal Pin Pin Pin "H" Pin "M" Pin "L" 4 trailing edge 4 trailing edge 4 trailing edge 6 leading edge 4 trailing edge 6 trailing edge 6 leading edge 6 trailing edge 4 6 3 3 3 Table 3 Output Priority Order Table 4 Allowable Input Amplitude Voltage Input signal Output signal Pin Pin Pin Pins , , , Pin Pins , , , Pin Pin input amplitude Pin input amplitude Pin input amplitude 3 3 4 6 8 12 14 15 17 13 12 14 15 17 13 VV 0 to 2.1(VP-P) VS 0.2 to 0.6(VP-P) fH =10Hz to 200kHz fV=10Hz to 200Hz VS 0.5 to 2.5(VP-P) fH =10Hz to 200kHz VS 0.5 to 2.5(VP-P) fV=10Hz to 200Hz

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR APPLICATION METHOD 1. Input block 1) GREEN (SYNC ON VIDEO) IN (Pin ) Input with sync negative polarity. Comparison of pin input signal and the reference voltage of the inside of the IC performs the synchronous separation. When the input at pin is less than or equal to the reference voltage (2.8V) and the ﬂowing current is more than or equal to the input sensitivity current (200 m A or more), the signal is separated. When only a synchronous signal is input into pin , the operatable amplitude and the duty are as shown in Figure 1. If the IC does not operate normally with the video signal input, change the value of external resistance R to make the current optimum. But, when capacity value is too big, output response becomes bad. 2) COMP/H IN, VIN (pins and ) The composite sync input is connected to pin . H and V of the separate sync input are connected to pins and , respectively. For each of pins and , the bias is 2.5V and the impedance is 10 kW . The internal double threshold converter is used for shaping waveform and for detecting polarity. Average DC voltage of input signal is 2.5V. Each threshold voltage is set at a voltage –0.3V away from this voltage. If the duty ratio at pin is small as shown in Figure 2, the optimum value is approx. 0.3 V P-P. If the duty ratio is large, the optimum value is approx. 0.6 VP-P. Figure 3 shows the allowable input amplitude and the reference value of duty test. Only 5V TTL input, decrease the amplitude by resistor splitting. In addition, Figure 4 shows an example for improving the capability of the allowable duty when the input amplitude is 0.7 V P-P or more. To use the IC out of the standard value, remove the ﬁlter from pins and , observe the waveform and check for a match with the waveform shown in Figure 5. Fig. 2 Fig. 4 Fig. 1 Fig. 3 Fig. 5 6 8 6 8 6 8 7 9 2.8V 2.5V 2.2V Small POSI Duty Lsrge NEG Duty 100W 18kW 3kW Input signal : 5V pin or pin This additional circuit (limiter) limits the amplitude to 0.6 VP-P. 0 0.2 0.4 0.6 1.0 0.8 R=56kW R=75kW 5 f=100kHz 3.3m R Operatable Maximum Duty (%) Input Amplitude (VP-P) 0 0.5 1 1.5 2.5 Operatable Maximum Duty (%) Input Amplitude (VP-P) 2.5V 4.5V 2.5V 0.5V POSI input NEG input

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR 3) Polarity detection and non-input detection (pins and ) External capacitance is required as a ﬁlter pin to detect polarity and non-input. As the value is larger, the ripple is smaller and less malfunction occurs. However, the response speed for detection is lower. A sufﬁcient external capacitance is 0.05 mF with input of 15 kHz and 10 uF with input of 60 kHz. However, check the frequency of the input signal in use and the ﬁlter pin waveform with the duty ratio conditions, and then check that the value is 3.1V or more (2.8V in capability) with positive polarity input and 1.9V or less (2.2V in capability) with negative polarity input. 4) V S/S IN (pin ) Input a signal of having externally integrated composite sync for V sync separation. Composite sync input into pin is output to pin . Output at is externally integrated and is input into pin for V sync separation. With the waveform at pin , check that the H element has been fully dropped. The threshold levels of sync separation, given hysteresis, are 3.5V and 1.8V. 2. Clamp Pulse 1) Clamp pulse width CLAMP TIMING (Pin ) The clamp pulse width is determined by the external resistance and the capacitance. As the resistance value and capacitance value are larger, the clamp pulse width is wider. The time constant is determined by the current ﬂowing out of pin and the capacitance value of the timing pin. The ﬂow current at pin is determined by the pin voltage and external resistance value. When the external resistance is 4.3 W (that is 700 uA) and the external capacitance is 220 pF , the pulse width is 0.4 usec. 2) Clamp pulse position CLAMP SW (pin ) When pin is "M" or "L", ﬁxing a higher-priority signal to the trailing edge results in occurrence of a clamp pulse. When pin 3 is 'H", and only GREEN is input, clamp pulse occurs at the trailing edge. A clamp pulse also occurs at the leading edge when COMP/H only is input or when both COMP/H and GREEN are input. 3. Sampling Pulse from VD Portion V TIME GATE SW (Pin ) Whether to output the pulse of VD portion from pins and can be selected. When pin is "H" or OPEN, pulse of the VD portion is output. When pin is "L", the pulse of the VD portion is not output. 7 8 6 12 12 11 VTH =3.5V VTH =1.8V Input waveform at Waveform at Output waveform at pin pin pin 10 100 1000 R=10kW R=4.3kW Clamp Pulse Width (usec) Clamp Timing Capacitance at Pin (pF)20 14 15 VD portion Output at pin when pin is "L" Output at pin when pin is "H" or OPEN VD portion Output at pin when pin is "L" Output at pin when the pin is "H" or OPEN1014 15 10 15 10 14 10

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR 4. Output Stage 1) Logic output (pins , , and ) The output format is as shown in the diagram below. When the internal load resistance of the IC is 20 kW , a current of approx. 3 mA ﬂows to the inside of the IC, no problem will occur. 2) Pulse output (pins , , , ,and ) The output format is as shown in the diagram below. When the internal load resistance of the IC is 1 kW , a current of approx. 6 mA ﬂows to the inside of the IC, no problem will occur. To improve the rising speed, connect a resistance between power supplies. Note that the low level of the output pulse goes up. TYPICAL CHARACTERISTICS 1 2 18 19 20kW 12 13 14 15 17 1kW -20 25 75 150 400 800 1400 125 1200 1000 600 200 1237.6 827.8 0 50 100 85 643.6 430.5 FP SP THERMAL DERATING (MAXIMUM RATING) POWER DISSIPATION Pd (mW) AMBIENT TEMPERATURE Ta (˚C) 02 6 0.2 0.4 0.8 0.6 46 ¥ Output Low Level (V) External Resistance (kW )

MITSUBISHI ICs (Monitor) M52347SP/FP SYNC SIGNAL PROCESSOR APPLICATION EXAMPLE (f H =50kHz, fV=80 Hz) * External circuit for input of pins 6 and 8 When amplitude of up to 5 VP-P is entered into this circuit, can be kept constant at approx. 0.6 VP-P. When the duty of input signal at pins 6 and 8 changes, the most broad support range is obtained with ampl itude of 0.6 V P-P. 1 23 45 6 7 8 91 0 16 15 14 13 12 1119 18 1720 SYNC CLAMP LOGIC GEN V TIME GATE EDGE SW V. SYNC SEP. SW H SHAPE H DET V SHAPE V DET LOGIC H. STATE V. STATE (POSI NON NEG) (POSI NON NEG) CLAMP SW 1.0m56k H M L GREEN IN 18k 0.01m COMP/H IN 100 4.7m 18k 4.7m GND COMP/H DET 0.068m 4.7m 4.7m 0.01m 100 V IN V DET 10m V TIME GATE SW L H 100p43k V S/S OUT VD + OUT V S/S IN HD + OUT HD - OUT 0.01m 47m CLAMP + OUT VCC 5V V. POL. H. POL. 4.3k 220p CLAMP TIMING (POSI NON NEG) (POSI NON NEG) Units Resistance : W Capacitance : F : 5V

Product Information

M52347SP specifications and overview.

Summary

SYNC SIGNAL PROCESSOR

Description

SYNC SIGNAL PROCESSOR

Source title M52347SP Datasheet(PDF) - Mitsubishi Electric Semiconductor

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