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mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 1 description M52722SP is a video ampli?r provided with osd mixing function, and a semiconductor ic having three channels of a built-in wideband 180mhz ampli?r. each channel has the functions of osd blanking, osd mixing, retrace line blanking, wideband ampli?r, main and sub contrast control, and main brightness. accordingly, it is structured to best ? the osd-provided high resolution display. . features frequency band : rgb...................................180mhz (at 3v p-p ) osd....................................................50mhz input: rgb..........................................0.7v p-p (typ.) osd......................................more than 3v p-p (positive polarity) blk (for osd)......................more than 3v p-p (positive polarity) retrace line blk..................more than 3v p-p (positive polarity) output: rgb..........................................4.0v p-p (max.) osd..........................................4.0v p-p (max.) each control of contrast and osd adjustment includes a main which allows 3 channels to be variable simultaneously, and a sub which allows each channel to be variable independently. each control pin can be controlled within a range of 0 to 5v. a built-in feedback circuit inside ic provides a stable dc level at ic output pins. application crt display recommended operating condition supply voltage range...........................................vcc=11.5 to 12.5v rated supply voltage......................................................vcc=12.0v pin configuration (top view) outline 36p4e 36 33 34 35 1 4 3 2 32 5 31 6 28 9 27 10 26 11 25 12 13 14 24 23 7 8 30 29 15 22 16 21 17 20 18 19 blk in(for osd) v cc1 (b) input (b) sub contrast (b) osd in (b) gnd 1 (b) v cc1 (g) input (g) sub contrast (g) osd in (g) gnd 1 (g) input (r) main osd adjust output (b) v cc2 (b) hold (b) sub osd adjust (b) v cc2 (g) output (g) gnd2 (b) hold (g) sub osd adjust (g) gnd2 (g) output (r) v cc2 (r) hold (r) M52722SP sub contrast (r) osd in (r) gnd 1 (r) main contrast cp in sub osd adjust (r) gnd2 (r) blk in (for retrace) brightness v cc1 (r)
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 2 block diagram b-ch blk b amp g-ch blk r-ch blk b hold r osd mix r hold r amp g hold g amp b osd mix g osd mix r clamp g clamp r contrast g brightness b brightness b osd blanking b osd blanking r osd blanking g brightness b contrast b clamp 36 1 35 2 32 5 33 4 31 6 30 7 29 8 28 9 34 3 26 11 27 10 25 12 23 14 24 13 21 16 22 15 19 18 20 17 main osd adjust (b) v cc2 (b) sub osd adjust (g) output (g) hold (g) gnd2 (r) v cc2 (r) sub osd adjust blk in (for retrace) (b) output (b) hold (r) output (r) hold (b) gnd2 (g) v cc2 (g) sub osd adjust brightness (r) gnd2 g contrast (b) v cc1 (b) sub contrast (g) input (r) sub contrast (b) gnd2 (r) v cc1 (g) osd in cp in (r) gnd2 (g) v cc1 (g) sub contrast (r) input (b) osd in (r) osd in main (r) gnd2 (b) input blk in (for osd) contrast
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 3 absolute maximum ratings (ta=25?c) electrical characteristics (vcc=12v, and ta=25?c, unless otherwise noted) symbol parameter ratings unit v cc supply voltage 13.0 v p d power dissipation 2403 mw t opr operating temperature -20 to +85 ?c t stg storage temperature -40 to +150 ?c v opr recommended operating supply voltage 12.0 v v opr recommended operating supply voltage range 11.5 to 12.5 v s arge surge pressure 200 v symbol parameter test point input external power supply(v) pulse input limits unit sw3 r-ch sw8 g-ch sw13 b-ch v4 v17 v19 v32 v36 sw18 sw1 5,10,15 sw20 min. typ. max. icc circuit current a a _ a _ a _ 55552 b sg4 a _ a _ 70 100 140 ma vomax output dynamic range t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 55 vari- able -- b sg4 a _ a _ 6.0 7.5 9.0 v p-p vimax maximum allowable input t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 5 2.5 2 - - b sg4 a _ a _ 1 1.6 - v p-p gv maximum gain t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 552 - - b sg4 a _ a _ 15.4 17.4 20 db d gv relative maximum gain take the ratio of the above test values 0.8 1 1.2 - v cr1 contrast control characteris- tics (at typ.) t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 542 - - b sg4 a _ a _ 14.3 15.8 17.3 db d v cr1 relative contrast control characteristics (at typ.) take the ratio of the above test values 0.8 1 1.2 - v cr2 contrast control characteris- tics (at min.) t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 512 - - b sg4 a _ a _ 0.4 0.7 1.0 v p-p d v cr2 relative contrast control characteristics (at min.) take the ratio of the above test values 0.8 1 1.2 - v scr1 sub-contrast control charac- teristics (at typ.) t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 452 - - b sg4 a _ a _ 14.3 15.8 17.3 db d v scr1 sub-contrast control charac- teristics (at typ.) take the ratio of the above test values 0.8 1 1.2 - v scr2 sub-contrast control charac- teristics (at min.) t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 152 - - b sg4 a _ a _ 0.4 0.8 1.2 v p-p d v scr2 relative sub-contrast control characteristics (at min.) take the ratio of the above test values 0.8 1 1.2 - v scr3 contrast and sub-contrast control characteristics (both main and sub at typ.) t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 332 - - b sg4 a _ a _ 1.1 1.8 2.5 v p-p d v scr3 relative contrast and sub- contrast control characteris- tics (both main and sub at typ.) take the ratio of the above test values 0.8 1 1.2 - v b1 brightness control character- istics (at max.) t.p35 t.p30 t.p25 a _ a _ a _ 554 - - b sg4 a _ a _ 3.0 3.6 4.2 v d v b1 relative brightness control characteristics (at max.) take the ratio of the above test values -0.3 0 0.3 v v b2 brightness control character- istics (at typ.) t.p35 t.p30 t.p25 a _ a _ a _ 552 - - b sg4 a _ a _ 1.1 1.6 2.1 v d v b2 relative brightness control characteristics (at typ.) take the ratio of the above test values -0.3 0 0.3 v v b3 brightness control character- istics (at min.) t.p35 t.p30 t.p25 a _ a _ a _ 551 - - b sg4 a _ a _ 0.3 0.7 1.1 v d v b3 relative brightness control characteristics (at min.) take the ratio of the above test values -0.3 0 0.3 v
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 4 electrical characteristics (cont.) symbol parameter test point input external power supply(v) pulse input limits unit sw3 r-ch sw8 g-ch sw13 b-ch v4 v17 v19 v32 v36 sw18 sw1 5,10,15 sw20 min. typ. max. f c1 frequency characteristics (f=50mhz at max.) t.p35 t.p30 t.p25 b sg1 b sg1 b sg1 5 vari- able --- c _ a _ a _ -2 0 2.5 db d f c1 relative frequency character- istics (f=50mhz at max.) take the ratio of the above test values -1 0 1 - f c1 frequency characteristics (f=180mhz at max.) t.p35 t.p30 t.p25 b sg2 b sg2 b sg2 5 vari- able --- c _ a _ a _ -3 -2.3 3 db d f c1 relative frequency character- istics (f=180mhz at max.) take the ratio of the above test values -1 0 1 - f c2 frequency characteristics (f=180mhz at typ.) t.p35 t.p30 t.p25 b sg2 b sg2 b sg2 5 vari- able --- c _ a _ a _ -3 0 3 db d f c2 relative frequency character- istics (f=180mhz at typ.) take the ratio of the above test values -1 0 1 - c.t.1 crosstalk1(f=50mhz) t.p35 t.p30 t.p25 b sg1 a _ a _ 55--- c _ a _ a _ - -30 -20 db c.t.1 crosstalk1(f=180mhz) t.p35 t.p30 t.p25 b sg2 a _ a _ 55--- c _ a _ a _ - -20 -15 db c.t.2 crosstalk2(f=50mhz) t.p35 t.p30 t.p25 a _ b sg1 a _ 55--- c _ a _ a _ - -30 -20 db c.t.2 crosstalk2(f=180mhz) t.p35 t.p30 t.p25 a _ b sg2 a _ 55--- c _ a _ a _ - -20 -15 db c.t.3 crosstalk3(f=50mhz) t.p35 t.p30 t.p25 a _ a _ b sg1 55--- c _ a _ a _ - -30 -20 db c.t.3 crosstalk3(f=180mhz) t.p35 t.p30 t.p25 a _ a _ b sg2 55--- c _ a _ a _ - -20 -15 db tr pulse characteristics 1 t.p35 t.p30 t.p25 b sg3 b sg3 b sg3 5 vari- able vari- able -- b sg4 a _ a _ - 2 - nsec tf pulse characteristics 2 t.p35 t.p30 t.p25 b sg3 b sg5 b sg5 5 vari- able vari- able -- b sg4 a _ a _ - 2 - nsec v14th clamping pulse threshold voltage t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 552 - - b sg4 a _ a _ 1.0 1.5 2.5 v dc w14 clamping pulse operation min. width t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 552 - - b sg4 a _ a _ 0.2 0.5 - m sec p dch pedestal voltage temperature characteristics1 t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 552 - - b sg4 a _ a _ -0.3 0 0.3 v dc p dcl pedestal voltage temperature characteristics2 t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 552 - - b sg4 a _ a _ -0.3 0 0.3 v dc otr osd pulse characteristics 1 t.p35 t.p30 t.p25 a _ a _ a _ 55 vari- able 5 vari- able b sg4 sw1 is a, and others b. sg6 a _ - 3 6 nsec otf osd pulse characteristics 2 t.p35 t.p30 t.p25 a _ a _ a _ 55 vari- able 5 vari- able b sg4 sw1 is a, and others b. sg6 a _ - 3 6 nsec oaj1 main osd adjustment control characteristics (at max.) t.p35 t.p30 t.p25 a _ a _ a _ 55254 b sg4 b sg6 a _ 3.7 4.3 5.0 v p-p d oaj1 relative main osd adjust- ment control characteristics (at max.) take the ratio of the above test values 0.8 1 1.2 - oaj2 main osd adjustment control characteristics (at min.) t.p35 t.p30 t.p25 a _ a _ a _ 55250 b sg4 b sg6 a _ - 0 0.5 v p-p d oaj2 relative main osd adjust- ment control characteristics (at min.) take the ratio of the above test values 0.8 1 1.2 - osdth osd input threshold voltage t.p35 t.p30 t.p25 a _ a _ a _ 55255 b sg4 sw1 is a, and others b. sg6 a _ 1.7 2.5 3.5 v dc v1th blk input threshold voltage t.p35 t.p30 t.p25 b sg5 b sg5 b sg5 55255 b sg4 sw1 is a, and others b. sg6 a _ 1.7 2.5 3.5 v dc
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 5 electrical characteristics (cont.) electrical characteristics test method note: sw/no of signal input pin and sw/no of pulse input pin, which have already been described in the electrical characteristics table, are omitted, and sw/no of external power supply will only be described as follows: sub-osd adjustment voltages, v32, v27 and v22, which are always set to the identical value, are represented by v32 in the electrical characteristics table. in addition, sub-contrast voltages, v4, v9 and v14, which are also set to the identical value, are represented by v4 in the electrical characteristics table. icc circuit current conditions shall be as speci?d in the electrical characteristics table, and take measurements with ammeter a when swa is turned to the b side. vomax output dynamic range follow the following procedure to set v19. 1. input sg5 to pin (pin or pin ), gradually reduce v19, and read the lower part voltage when the lower part of input waveform of t.p25 (t.p30 or t.p35) is distorted to let the reading be v olr (v olg or v olb ). 2. then, gradually raise v19, and read the upper part voltage when the upper part of output waveform of t.p25 (t.p30 or t.p35) is distorted to let the reading be v ohr (v ohg or v ohb ). 3. vomax is found by: vomax=v ohr (v ohg , v ohb )-v olr (v olg , v olb ) vimax maximum allowable input change v17 to 2.5v, gradually increase input signal amplitude from 700m v p-p , and read input signal amplitude when output signal starts to be distorted. gv and d gv maximum gain and relative maximum gain 1. input sg5 to pin (pin or pin ), and read the output amplitude of t.p25 (t.p30 or t.p35) at this time to let the reading be v or1 (v og1 or v ob1 ). 2. maximum gain gv is found by: 3. relative maximum gain d g is found by d g v =v or1 /v og1 , v og1 /v ob1 , v ob1 /v or1 through respective calculation. v cr1 contrast control characteristics and d v cr1 relative contrast control characteristics (at typ.) 1. follow the electrical characteristics table except changing v17 to 4v. 2. read the output amplitude of t.p25 (t.p30 or t.p35) at this time, and let the reading be v or2 (v og2 or v ob2 ). 3. contrast control characteristics vcr1 and relative contrast control characteristics d vcr1 is found by through respective calculation. v cr2 contrast control characteristics and d v cr2 relative contrast control characteristics (at min.) 1. follow the electrical characteristics table except changing v17 to 1.0v. 2. read the output amplitude of t.p25 (t.p30 or t.p35) at this time to let the reading be v or3 (v og3 or v ob3 ). this value represents v cr2 . 3. relative contrast control characteristics d v cr2 is found by: v or2 = v or3 / v og3 ,v og3 / v ob3 / ,v ob3 /v or3 symbol parameter test point input external power supply(v) pulse input limits unit sw3 r-ch sw8 g-ch sw13 b-ch v4 v17 v19 v32 v36 sw18 sw1 5,10,15 sw20 min. typ. max. soaj1 sub osd adjustment control characteristics (at typ.) t.p35 t.p30 t.p25 a _ a _ a _ 55225 b sg4 b sg6 a _ 1.6 2.2 2.6 v p-p soaj2 sub osd adjustment control characteristics (at min.) t.p35 t.p30 t.p25 a _ a _ a _ 55205 b sg4 b sg6 a _ - 0 0.5 v p-p h blk retrace line blk characteris- tics t.p35 t.p30 t.p25 a _ a _ a _ 55200 a _ a _ b sg7 - 0.2 0.5 v dc hvth retrace line blk input threshold value t.p35 t.p30 t.p25 a _ a _ a _ 55200 a _ a _ b sg7 0.5 1.5 2.5 v dc 13 8 3 0.0 5.0 (v) t.p25 output waveform (t.p30 and t.p35 are also the same) 13 8 3 g v =20log v or1 ( v og1 , v ob1 ) [ v p-p ] 0.7 [ v p-p ] v cr1 =20log v or2 ( v og2 , v ob2 ) [ v p-p ] 0.7 [ v p-p ] d v cr1 =v or1 /v og1 , v og1 /v ob1 , v ob1 /v or1
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 6 v scr1 sub-contrast control characteristics and d v scr1 relative sub-contrast control characteristics (at typ.) 1. follow the electrical characteristics table except changing v4,v9 and v14 to 4.0v. 2. read the output amplitude of t.p25 (t.p30 or t.p35) to let the reading be v or4 (v og4 or v ob4 ). 3. sub-contrast control characteristics v scr1 and relative sub- contrast control characteristics d v scr1 are found by through respective calculation. v scr2 sub-contrast control characteristics and d v scr2 relative sub-contrast control characteristics (at min.) 1. follow the electrical characteristics table except changing v4, v9 and v14 to 1.0v. 2. read the output amplitude of t.p25 (t.p30 or t.p35) at this time to let the reading be v or5 (v og5 or v ob5 ). this value represents v scr2. 3. relative sub-contrast control characteristics d v scr2 is found by: d v scr2 =v or5 /v og5 , v og5 /v ob5 , v ob5 /v or5 v scr3 contrast and sub-contrast control characteristics and d v scr3 relative contrast and sub-contrast control characteristics (at typ.) 1. follow the electrical characteristics table except changing v17 to 3.0v, and v4, v9 and v14 to 3.0v. 2. read the output amplitude of t.p25 (t.p30 or t.p35) at this time, and let the reading be v or 6 (v og6 or v ob6 ). this value represents v scr3 . 3. relative sub-contrast control characteristics d v scr3 is found by: d v scr3 =v or6 /v og6 , v og6 /v ob6 , v ob6 /v or6 v b1 brightness control characteristics and d v b1 relative brightness characteristics (at max.) 1. the conditions shall be as speci?d in the electrical characteristics table. 2. measure the output of t.p25 (t.p30 or t.p35) at this time with an ammeter, and let it be v or7 (v og7 or v ob7 ) to let it be v b1 , respectively. 3. for relative control characteristics, further, measure difference between channels from v or7 , v og7 or v ob7 . v b2 brightness control characteristics and d v b2 relative brightness control characteristics (at typ.) 1. the conditions shall be as speci?d in the electrical characteristics table. 2. use an ammeter to measure the output of t.p25 (t.p30 or t.p35) at this time to let the value be v or7 (v og7 or v ob7 ). this value represents v b2 . 3. for relative brightness control characteristics d v b2 , further, calculate difference between channels from v or7 , v og7 or v ob7 . v b 3 brightness control characteristics and d v b 3 relative brightness control characteristics (at min.): 1. the conditions shall be as speci?d in the electrical characteristics table. 2. use an ammeter to measure the output of t.p25 (t.p30 or t.p35) at this time to let the value be v or7" (v og7" or v ob7" ). this value represents v b3 . 3. for relative control characteristics d vb3, further, calculate difference between channels from v or7" , v og7" or v ob7". f c1 and d f c1 frequency characteristics 1 and relative frequency characteristics (f=50mhz at max.) and f c1' and d f c1' frequency characteristics 1 and relative frequency characteristics (f=180mhz at max.) 1. the conditions shall be as speci?d in the electrical charactristics table. 2. whilst sg1 and sg2 are used, input sga ?st, apply voltage to the input pin (pin , pin or pin ) through about 2k w of resistor so as to provide 2.5v on the lower side of input signal. in addition, apply voltage to the hold pin (pin , pin or pin ) to ensure that the output wave of t.p25 (t.p30 or t.p35) will not be jammed so as to allow the lower side of the sine wave, an output signal to be 2v. adjust the main contrast voltage (17v) at this time to allow the output amplitude to be 4.0v p-p . then, change the input signal to sg1 or sg2 to measure each output amplitude. 3. now, when letting this test value be output amplitude 4.0v p-p when sga is input, output amplitude v or 8 (v og8 or v ob8 ) when sg1 is input, and output amplitude v or9 (v og9 or v ob9 ), frequency characteristics f c1 or f c1' is calculated from: 4. for relative frequency bands d f c1 and d f c1 ', calculate difference in f c1 and f c1 for each channel. v scr1 =20log v or4 ( v og4 , v ob4 ) [ v p-p ] 0.7 [ v p-p ] d v scr1 =v or4 /v og4 , v og4 /v ob4 , v ob4 /v or4 d v b1 =v or7 v og7 [v] =v og7 v ob7 =v ob7 v or7 d v b2 =v or7 v og7 [v] =v og7 v ob7 =v ob7 v or7 d v b3 =v or7?? v og7?? [v] =v og7?? v ob7?? =v ob7?? v or7?? 3 8 13 23 28 33 f c1 =20log v or8 ( v og8 , v ob8 ) [v p-p ] 4.0 [v p-p ] f c1 ?=20log v or9 ( v og9 , v ob9 ) [v p-p ] 4.0 [v p-p ]
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 7 f c2 and d f c2 frequency characteristics 2 and relative frequency characteristics 2 (f=180mhz at typ.) the same as for f c1 , d f c1 and d f c1' applies except adjusting the main contrast voltage (v17) and allowing the amplitude of output signal when sga is input to be 1.0v p-p . c.t.1 crosstalk 1 (f=50mhz) and c.t.1' crosstalk 1 (f=180mhz) 1. the conditions shall be as speci?d in the electrical characteristics. (set the input pin and hold pin as in the case of f c1 , d fc1 , f c1' and d f c1' ) 2. input sg1 (or sg2) to pin (r-ch) only, measure the output waveform amplitude of t.p25 (t.p30 or t.p35) to be v or , v og or v ob . 3. crosstalk c.t.1 (c.t.1') c.t.2 crosstalk 2 (f=50mhz) and c.t.2' corsstalk 2 (f=180mhz) 1. change the input pin to pin (g-ch), and read the output as in the case of c.t.1 or c.t.1'. 2. crosstalk c.t.2 (c.t.2') is found by: c.t.3 crosstalk 3(f=50mhz) and c.t.3' crosstalk 3(f=180mhz) 1. change the input pin to pin (b-ch), and read the output as in the case of c.t.1 or c.t.1'. 2. crosstalk c.t.3 (c.t.3') is found by: tr, and tf, pulse characteristics 1 and pulse characteristics 2 1. the conditions shall be as speci?d in the electrical characteristics table. adjust the main contrast voltage (v17) and brightness voltage (v19), and allow the output signal amplitude to be 4.0vp-p, and the black level 2.0v. 2. use an active probe to measure rise tr1 and fall tf1 at 10% to 90% of input pulse. 3. then, use an active probe to measure rise tr2 and fall tf2 at 10% to 90% of output pulse. 4. pulse characteristics tr and tf: v14th clamping pulse threshold voltage 1. the conditions shall be as speci?d in the electrical characteristic table. 2. gradually reduce sg4 level at this time, while monitoring the output signal (pedestal voltage: about 1.8v), and measure sg4 top level when the pedestal voltage of output signal is not stabilized and starts to fall. w14 minimum clamping pulse operation width gradually reduce sg4 pulse width, and measure sg4 pulse width (1.5v from gnd) when the pedestal voltage of output signal is not stabilized and starts to fall. p dch and p dcl , pedestal voltage temperature characteristics 1 and pedestal voltage temperature characteristics 2 1. the conditions shall be as speci?d in the electrical characteristics table. 2. measure pedestal voltage at room temperature to let the value be p dc 1. 3. then, measure pedestal voltage at -20?c and 85?c to let the value be p dc2 or p dc3 . 4. p dch =p dc1 -p dc2 p dcl =p dc1 -p dc3 otr and otf, osd pulse characteristics 1 and osd pulse characteristics 2 1. the conditions shall be as speci?d in the electrical characteristics table. adjust main osd adjustment voltage (v36) and brightness voltage (v19) to allow output signal amplitude to become 3.0vp-p, and black level 2.0. 2. use an active probe to measure rise otr1 and fall otf1 at 10% to 90% of input pulse. 3. use an active probe to measure rise ottr2 and fall otf2 at 10% to 90% of output pulse. 4. osd pulse characteristics otr and otf are found by: 13 c.t.1=20log v og or v ob [v p-p ] v or [v p-p ] [db] (c.t.1? 8 c.t.2=20log v or or v ob [v p-p ] v og [v p-p ] [db] (c.t.2? 3 c.t.3=20log v or or v og [v p-p ] v ob [v p-p ] [db] (c.t.2? tr (nsec) = (tr2) 2 - (tr1) 2 tf (nsec) = (tf2) 2 - (tf1) 2 10% 90% 100% 0% tr1 or tr2 tf1 or tf2 otr (nsec) = (otr2) 2 - (otr1) 2 otf (nsec) = (otf2) 2 - (otf1) 2
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 8 oaj1 main osd adjustment control characteristics (at max.) and d oaj1 relative main osd adjustment control characteristics (at max.) 1. the conditions shall be as speci?d in the electrical characteristics table. 2. let output signal pedestal voltage of t.p25 (t.p30 or t.p35) be v lra (v lga or v lba ) and voltage in the osd area be v hra (v hga or v hba ). 3. if letting oaj1 be v ora (v oga or v oba ), oaj1=v ora (v oga , v oba ) = v hra -v lra (v hga -v lga , v hba -v lba ) 4. relative osd adjustment control characteristics d oaj1: d oaj1=v ora /v oga , v oga /v oba , v oba /v ora oaj2 main osd adjustment control characteristics (at min.) and d oaj2 relative main osd adjustment control characteristics (at min.) change v36 to 0v, and obtain oaj2 or d oaj2 as in the case of oaj1 or d oaj1. osdth osd input threshold voltage 1. the conditions shall be as speci?d in the electrical characteristics table. 2. gradually reduce sg6 level at this time, while monitoring the output, and measure top sg6 level when output is stopped to let the value be osdth. v1th blk input threshold voltage 1. the conditions shall be as speci?d in the electrical characteristics table. 2. verify at this time that no signal is output with a timing in which output is synchronized with sg6. (osd blanking period) 3. gradually reduce sg6 level at this time, while monitoring the output, and measure top sg level when osd blanking period expires to let the value be v1th. soaj1 sub osd adjustment control characteristics (at typ.) and soaj2 sub osd adjustment control characteristics (at min.) 1. the conditions shall be as speci?d in the electrical characteristics table. 2. read output amplitude of t.p25 (t.p30 or t.p35) at this time, and let the reading be v orc (v ogc or v obc ) to let it be soaj1 or soaj2. hblk retrace line blk characteristics 1. the conditions shall be as speci?d in the electrical characteristics table. 2. monitor output at this time, and read trace line blanking level to let the reading be h blk . hvth retrace line blk input threshold voltage 1. the conditions shall be as speci?d in the electrical characteristics table. 2. verify that blanking is performed with a timing in which output is synchronized with sg7. gradually reduce sg7 level, while monitoring the output, and measure top sg7 level when blanking period expires to let the reading be hvth.
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 9 input signal sg no. signals sga sine wave with an amplitude of 0.7v p-p sg1 sine wave with an amplitude of 0.7v p-p (f = 50mh z ) sg2 sine wave with an amplitude of 0.7v p-p (f = 180mh z ) sg3 video signal with an amplitude of 0.7v p-p (f = 1mh z ,duty = 50%) lo section shall be synchronized with sg4 pulse. sg4 pulse with an amplitude of 2.5v p-p and a pulse width of 0.5 m s (pulse width, amplitude and frequency are vari- able) synchronized with the pedestal section of standard video stage wave video stage wave video signal with an amplitude of 0.7v p-p (f=30khz, amplitude is partially variable.) blk (for osd) osd signal pulse with an amplitude of 4.0v p-p and a pulse width of 15 m s synchronized with the image section of standard video stage wave. (amplitude is partially variable.) retrace line bkl signal pulse with an amplitude of 4.0v p-p and a pulse width of 15 m s synchronized with the image section of standard video stage wave. (amplitude is partially variable.) 0.7v p-p ov 2.5v p-p 0.5 m s 0.5 m s 0v 0.7v p-p 4v 0v 4v
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 10 test circuit 36 35 34 33 32 31 30 29 28 27 25 26 24 19 23 20 22 21 123 45 6 7 8 9 10 12 11 13 18 14 17 15 16 a 0.01 m swa 12v a b 100 m sga sg1 sg2 sg3 sg5 sg6 sw5 sw18 sg4 sw15 sw1 0.01 m sw3 47 m sg6 sw8 0.01 m 47 m 0.01 m 47 m sw10 2.2 m 2.2 m sw13 v14 v17 v9 330 2.2 m v27 330 v32 330 v36 v22 sg7 v19 sw20 a b b a a b a b b a a b b a v4 a b c a b v cc gnd v cc gnd v cc gnd v cc gnd v cc gnd v cc gnd units resistance : w capacitance : f M52722SP
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 11 typical characteristics thermal derating (maximum rating) operating temperature ta (?c) -20 0 75 150 400 800 2400 125 2016 0 power dissipation pd (mw) 2000 1600 1200 25 50 85 100 when mounted with standard substrate
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 12 application example 0.01 m 2.2 m 110v blk in 330 330 330 dc clamp crt 2.2 m 2.2 m (for retrace) 2.2v ? 0.1 m 0.01 m 0.1 m 0.01 m 0.1 m 0.01 m 0.1 m 0.1 m 0~5v 0.1 m 0.01 m 0.01 m 0.1 m 0 to 5v 0.1 m 0.1 m 0.01 m 47 m 0.01 m 47 m 0.01 m 47 m M52722SP 0 to 5v 0 to 5v 0 to 5v 12v clamp blk in (for osd) osd in (b) input (g) osd in (g) input (r) osd in (r) input (b) 5v 12 45 367910 811121415 13 16 17 18 36 35 33 32 34 31 30 28 27 29 26 25 23 22 24 21 20 19 6v 6v 6v units resistance : w capacitance : f 75 75 75
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 13 description of pin pin no. name peripheral circuit of pins dc voltage description of function blk in(for osd) - einput pulse between 3.5v and 5v. ground to gnd when not in use. v cc (b) v cc (g) v cc (r) 12 apply identical voltage to all 3 chan- nels. input (b) input (g) input (r) 2.5 clamped to about 2.5v by clamping pulse at pin 18. input at a low impedance. sub contrast (b) sub contrast(g) sub contrast (r) 2.5 use at less than 5v to ensure stable operation. osd in (b) osd in (g) osd in (r) - input pulse between 3.5v and 5v. ground to gnd when not in use. 1 2 7 12 3 8 13 4 9 14 5 10 15 vcc gnd 0.24ma 2k w 2k w 2.5v cp 2.5v vcc gnd 1.1ma 1 2.5v vcc gnd 0.9ma b-ch g-ch vcc gnd 2.5v 23.5k w 1.5k w less than 1v 3.5v to 5v 1v or less 3.5v to 5v
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 14 description of pin (cont.) pin no. name peripheral circuit of pins dc voltage description of function gnd (b) gnd (g) gnd (r) gnd main contrast 2.5 use at less than 5v to ensure stable operation. cp in - input more than 2.5v of pulse. iinput at a low impedance. main brightness - blk in (for retrace) - iinput pulse between 2.5v and 5v. ground to gnd when not in use. 6 31 11 26 16 21 17 18 19 20 less than 1v more than 2.5v vcc gnd 17 11k w 2.5v 41k w vcc gnd 18 41k w 2.2v vcc gnd 20.3k w b-ch 19 g-ch vcc gnd 45k w b-ch 20 g-ch 0.25ma 2.1v less than 0.5v 2.5 to 5v
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 15 description of pin (cont.) pin no. name peripheral circuit of pins dc voltage description of function sub osd adjust (r) sub osd adjust (g) sub osd adjust (b) when open 5.5v open or pull up to vcc when not in use. hold (r) hold (g) hold (b) vari- able. capacitance is required between gnds. v cc2 (r) v cc2 (g) v cc2 (b) 12 apply a power supply dedicated to output emitter follower. apply identical volt- age to all 3 channels. output (r) output (g) output (b) vari- able resistor is required on the gnd side. set arbitrarily to provide less than 15ma by drive capability required. main osd adjust apply 5.5v open or pull up to vcc when not in use. 22 27 32 23 28 33 24 29 34 25 30 35 36 gnd 50k w 65k w 65k w v cc 55k w 55k w 1k gnd 1k w 0.2ma v cc 50 w gnd 50k w 65k w 65k w v cc 55k w 55k w 1k w 10p pin pin pin 34 29 24 pin pin pin 35 30 25
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 16 M52722SP - instructions for use 1) clamping pulse input input positive polarity pulse. clamping pulse threshold voltage vth is calculated by the following equation, and voltages more than 2.2 v is subject tolim: vth = 2.2 v- diode x 1 = 1.5v recommended clamping pulse voltage is as given in the following diagram: in addition, pulse width is recommended as follows: more than 1.0 m sec at 15khz, more than 0.5 m sec at 30khz, and more than 0.3 m sec at 64khz. clamping pulse wiring generally involves long stretched lines in the set, is made from the high pressure side, and often connected indirectly to external pins, causing strong surge input to tend to come into. under such circumstances, protective circuit as given in the following diagram is recommended: 2) brightness operation the above diagram represents its principle. 2-1) brightness pins use within the range of 1v to 5v. control characteristics are as given in the following drawing: 2-2) sub-brightness this ic has no sub-brightness function. 2-3) capacitance value of holding capacitor value necessary as ic is more than 0.01? (when fh=15khz). however, this depends upon hold period (time other than for clamping), and the longer the hold time is, the greater the value is necessary. in terms of application, the smaller the capacitance value, the quicker the response, and the greater the capacitance value, the more stable the behavior. accordingly, set freely depending upon signals and clamping pulse contents (especially pulse status in a vertically synchronized timing). 3) blk (for osd) and osd input pins input formula is on an open basis. (see page 2-1109.)threshold voltage is 2.5v. inputting osd mix signal without inputting blk pulse will cause abnormal operation. input blk pulse as well whenever inputting osd mix signal. ensure that input pin is grounded when osd mix function is not used. vth(1.5v) 2.5v to 5.0v 0v 18 19 + - + - signal dc level shift brightness (1 to 5v) 0 1 2 3 4 5 6 1 2 3 4 5 output dc voltage (v) brightness voltage (v)
mitsubishi ics (monitor) M52722SP 3-channel video preamplifier provided with osd mix and retrace line blk for high-resolution 17 osd display period overlapped with clamping pulse period will cause abnormal operation. as measures against this, external circuit as given in the following diagram is recommended: 4) retrace line blk input pins input formula is open. (see page 2-1110.) threshold voltage is 1.5v. ensure that input pin is grounded when no retrace line blk func- tion is used. 5) main, sub osd adjustment pins use within the range of 0v-5v. control characteristics are as given in the following drawing: open if main osd adjustment or sub osd adjustment is not used. if, in application, wiring on the substrate causes interference wave to get into these pins, affecting even ic input, consider addition of such as bus controller. ensure that main, sub osd adjustment pins are open or grounded when no osd mix function is used. precautions for application wire output pins to output pulldown resistors at a shortest dis- tance. voltage in the ic output signal pedestal area is recommended for use at about 2v. 18 1 blk (for osd) c/p vcc 0 1 2 3 4 5 6 sub osd adjust 5v (main osd adjust 5v) sub osd adjust 4v (main osd adjust 4v) sub osd adjust 3v (main osd adjust 3v) sub osd adjust 2v (main osd adjust 2v) sub osd adjust 1v (main osd adjust 1v) main osd adjust (v) (sub osd adjust) output amplitude

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