mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 1 description the M52721sp is a wideband video preampli?r with 200mhz band. features input:0.7v p-p (typical), output:7v p-p (maximum) maximum gain:20db frequency band:200mhz (-3db) contrast control (0 to 5v dc ) brightness control (0 to 5v dc ) built-in osd mix circuit application display monitor recommended operating condition supply voltage range....................................................11.5 to 12.5v rated supply voltage................................................................12.0v operating temperature..............................................-20 c to +85 c circuit current...........................................................................60ma pin configuration (top view) cap ref.c f.b.c gnd 1 video in v cc1 contrast osd.c clamp + in osd blk in osd mix in osd adjust gnd 3 video out v cc3 v cc2 f/b + gnd 2 f/b outline 20p4b 20 17 18 19 1 4 3 2 16 5 15 6 12 9 11 10 7 8 14 13 clamp hold M52721sp block diagram contrast gnd 1 v cc1 cap 11 12 13 14 15 16 17 18 19 20 10 9 8 7 6 5 4 3 2 1 contrast clamp + in clamp osd.c video in f.b.c ref.c osd v cc3 osd osd v cc2 gnd 3 video out f/b + gnd 2 f/b hold adjust mix in blk in amp brightness amp clamp +
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 2 absolute maximum ratings (ta=25 c, unless otherwise noted) electrical characteristics (ta=25 c, v cc =12v, unless otherwise noted) symbol parameter ratings unit v cc supply voltage 13.0 v p d power dissipation 1524 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 surge electrostatic discharge 200 v symbol parameter test point swa test conditions limits unit input external supply voltage (v) pulse sw5 v7 con- trast v11 bright- ness v18 osd adj sw10 clamp sw19 osd mix sw20 osd blk min. typ. max. i cc circuit current a a b 5.0 3.0 5.0 c b b 40 52 64 ma v omax output dynamic range t.p16 b a sg8 5.0 0.5 0 a sg6 b b 8.0 8.9 11.5 v p-p v imax maximum allowable input t.p16 b a sg8 2.5 0.5 0 a sg6 bb - 0.7 1.0 v p-p gv maximum gain t.p16 b a sg8 5.0 2.0 0 a sg6 b b 17.0 20.0 23.0 db v cr1 contrast control characteristics 1 t.p16 b a sg8 2.5 2.0 0 a sg6 b b 13.0 15.0 17.0 db v cr2 contrast control characteristics 2 t.p16 b a sg8 1.0 2.0 0 a sg6 b b 5.0 7.2 9.1 db v b1 brightness control characteristics 1 t.p16 b b 5.0 1.0 0 a sg6 b b 0.6 1.0 1.4 v dc v b2 brightness control characteristics 2 t.p16 b b 5.0 2.0 0 a sg6 b b 1.6 2.0 2.4 v dc v b3 brightness control characteristics 3 t.p16 b b 5.0 3.0 0 a sg6 b b 2.6 3.0 3.4 v dc f 1-a frequency characteristics 1-a f=100mhz t.p16 b a sg2 2.5 open 0 c b b -1 0 3 db f 2-a frequency characteristics 2-a f=200mhz t.p16 b a sg3 2.5 open 0 c b b -3 -2 3 db t r pulse characteristics (rise time) t.p16 b a sg5 4 2.4 0 a sg6 bb - 2.0 5.0 nsec t f pulse characteristics (fall time) t.p16 b a sg5 4 2.4 0 a sg6 bb - 1.5 5.0 nsec v 10th clamp pulse threshold voltage t.p16 b b 4 2.4 0 a sg6 b b 1.9 2.0 5.0 v dc w 10 clamp pulse minimum width t.p16 b b 4 2.4 0 a sg6 b b 0.7 0.8 -m sec ot r osd pulse characteristics (rise time) t.p16 b b 4 2.4 4 a sg6 a sg7 b - 5.0 10.0 nsec ot f osd pulse characteristics (fall time) t.p16 b b 4 2.4 4 a sg6 a sg7 b - 5.0 10.0 nsec v 19th osd input threshold voltage t.p16 b b 4 2.4 4 a sg6 a sg7 b 2.2 2.3 5.0 v dc v 20th blk input threshold voltage t.p16 b a sg8 4 2.4 4 a sg6 b a sg7 2.8 2.9 5.0 v dc o aj1 osd adjust control characteristics 1 t.p16 b b 4 2.4 4 a sg6 a sg7 b 5.9 6.3 6.8 v p-p o aj2 osd adjust control characteristics 2 t.p16 b b 4 2.4 2 a sg6 a sg7 b 2.9 3.3 3.7 v p-p
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 3 electrical characteristics test method i cc circuit current when there is no signal, ? swa on side ?? and measure i cc , using ampere meter a. v omax output dynamic range input sg8 to pin 5, and set v11 at 0.5v gradually increase the amplitude of sg8 from 700mv, and measure the amplitude of the tp16 output waveform when the upper side of the waveform becomes distorted. v imax maximum allowable input from the condition in vomax above, change v7 to 2.5v, gradually increase the amplitude of sg8 from 700mv p-p , and read the input signal amplitude when the output signal starts to be distorted. gv maximum gain read the amplitude of tp16 output: it should be taken as v 0 . the maximum gain g v is determined by: v cr1 contrast control characteristics 1 set v7 at 2.5v, and read the amplitude of tp16 output: it should be taken as v 01 . v cr2 contrast control characteristics 2 set v7 at 1.0v, and read the amplitude of tp16 output: it should be taken as v 02 . v b1 brightness control characteristics 1 set brightness (v11) at 1.0v, and measure the output of tp16 with a voltmeter. this value is v b1 . v b2 brightness control characteristics 2 set brightness (v11) at 2.0v, and measure the output of tp16 with a voltmeter. this value is v b2 . v b3 brightness control characteristics 3 set brightness (v11) at 3.0v, and measure the output of tp16 with a voltmeter. this value is v b3 . f 1-a frequency characteristics 1-a f=100mhz f 2-a frequency characteristics 2-a f=200mhz with zero resistance between pins 13 and 16, apply a dc voltage to pin 5 so that the bottom of the input waveform reaches 2.6v. next, apply a dc voltage to pin 8 so that the bottom of the output waveform reaches 2.4v. input sg1 and measure the amplitude of tp16 output (v 01 ). input sg2 and measure the amplitude of tp16 output (v 02 ). input sg3 and measure the amplitude of tp16 output (v 03 ). f 1-a and f 2-a are determined by: t r pulse characteristics (rise time) t f pulse characteristics (fall time) 1. measure the rise time t r1 and fall time t f1 between 10 and 90% of the input pulse with an active probe. 2. next, measure the rise time t r2 and fall time t f2 between 10 and 90% of the output pulse with an active probe. v 10th clamp pulse threshold voltage while monitoring the output (approx. 2.4v dc ), decrease the sg6 pulse width gradually and measure the sg6 amplitude when the output reaches 2.4v or more. w 10 clamp pulse minimum width while monitoring the output (approx. 2.4v dc ), decrease the sg6 amplitude gradually and measure the sg6 pulse width when the output becomes 2.4v or more. ot r osd pulse characteristics (rise time) ot f osd pulse characteristics (fall time) measure the osd rise time t r and osd fall time t f between 10 and 90% of the output pulse with an active probe. v 19th osd input threshold voltage while monitoring the output, decrease the sg7 amplitude gradually and measure the sg7 amplitude when the output reaches 0v. tp16 output waveform 0.0 9.0 (v) v 0 [v p-p ] 0.7 [v p-p ] [db] g v =20log v 01 [v p-p ] 0.7 [v p-p ] [db] v cr1 =20log v 02 [v p-p ] 0.7 [v p-p ] [db] v cr2 =20log v 02 [v p-p ] v 01 [v p-p ] [db] f 1-a =20log v 03 [v p-p ] v 01 [v p-p ] [db] f 2-a =20log t r (nsec)= (t r2 ) 2 -(t r1 ) 2 t f (nsec)= (t f2 ) 2 -(t f1 ) 2
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 4 input signal sg no. signals sg1 sine wave with amplitude 0.7v p-p (100khz, amplitude partially variable * ) sg2 sine wave with amplitude 0.7v p-p (f=100mhz) sg3 sine wave with amplitude 0.7v p-p (f=200mhz) sg5 pulse with amplitude 0.7v p-p (f=30khz, duty=50%) sg6 cp + pulse with amplitude 4.0v p-p and pulse width 3.0 m s synchronous with the pedestal part of standard video stepped wave (f=30khz, pulse width and amplitude partially variable) sg7 blk, osd signals pulse with amplitude 4.0v p-p and pulse width 10 m s synchronous with the image part of standard video stepped wave (f=30khz, amplitude partially variable * ) sg8 standard video stepped wave video signal with pulse width 0.7v p-p (f=30khz, amplitude partially variable * ) 0.7v p-p 0.7v p-p 4.0v p-p 3.0 m s 0v 4.0v p-p 10 m s 0v v 20th blk input threshold voltage make sure that signal is not output in synchronization with sg7 (blanking portion). next, while monitoring this output, decrease the sg7 amplitude gradually and measure the sg7 amplitude when the blanking portion disappears. o aj1 osd adjust control characteristics 1 measure the amplitude of the output. o aj2 osd adjust control characteristics 2 the conditions are the same as in o aj1 above except that v18 is set at 2v.
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 5 test circuit typical characteristics contrast gnd 1 v cc1 cap 11 12 13 14 15 16 17 18 19 20 10 9 8 7 6 5 4 3 2 1 clamp + in clamp osd.c video in f.b.c ref.c osd v cc3 osd osd v cc2 gnd 3 video out f/b + gnd 2 f/b hold adjust mix in blk in M52721sp 1 m 10 m 10 m 2.2 m 1 m a sg6 b sw10 c a sg1 b sw5 sg2 sg3 sg5 sg8 0.01 m v7 v11 brightness v18 t.p16 2.2k a sg7 b sw19 a sg7 b sw20 100 m 0.01 m 12v a a swa b units resistance : w capacitance : f 470 ambient temperature ta ( c) 0 25 50 75 100 125 2000 150 -20 1600 thermal derating (maximum rating) power dissipation p d (mw) 85 400 800 1200 1524 793 when standard substrate is mounted
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 6 application example 1. external feed back contrast gnd 1 v cc1 cap 11 12 13 14 15 16 17 18 19 20 10 9 8 7 6 5 4 3 2 1 clamp + in clamp osd.c video in f.b.c ref.c osd v cc3 osd osd v cc2 gnd 3 gnd 2 hold adjust mix in blk in M52721sp 1 m 10 m 10 m 2.2 m 0.1 m 0 to 5v brightness to crt units resistance : w capacitance : f clamp pulse 0.01 m 47 m 470 47 m 0.01 m 5v 0v 5v 0v 47 m 0.01 m v cc =12.0v r/g/b in 0.01 m 47 m 0.01 m sync processor m52036sp/m52346sp m52347sp/m52347fp 0.01 m 0.01 m +b cut off adj output stage inverted amplifier 3.3 m 30 n.p 1 m green in comp/h in v in hd vd
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 7 2. internal feed back contrast gnd 1 v cc1 cap 12 13 14 15 16 17 18 19 20 10 9 8 7 6 5 4 3 2 1 clamp + in clamp osd.c video in f.b.c ref.c osd v cc3 osd osd v cc2 gnd 3 gnd 2 hold adjust mix in blk in M52721sp 1 m 10 m 10 m 2.2 m 0.1 m 0 to 5v brightness to crt units resistance : w capacitance : f 3.3 m clamp pulse 0.01 m 47 m 470 47 m 0.01 m 5v 0v 5v 0v 47 m 0.01 m v cc =12.0v r/g/b in 0.01 m 47 m 0.01 m sync processor m52036sp/m52346sp m52347sp/m52347fp n.p 0.01 m 0.01 m +b cut off adj output stage inverted amplifier 11 2.2k 30 1 m green in comp/h in v in hd vd
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 8 description of pin pin no. name dc voltage (v ) peripheral circuit of pins description of function 1 cap 4.5 capacitance is required between the pin and gnd. 2 3 ref.c f. b . c 4.5 variable capacitance is required between the pin and gnd. if the output oscil- lates, consider the use of additional non-polar capacitance (approx. 1 m ) between pin 2 and pin 3. 4 12 17 gnd1 gnd2 gnd3 gnd - since pin 17 is a gnd pin for the output stage only, make sure that it does not interfere with other gnd pins. 5 video in 2.6 clamped at about 2.6v by the clamp pulse of pin 10. 6 14 v cc1 v cc2 12 impressed - 7 contrast variable do not apply 5v or more dc voltage. v cc gnd 38k 1 6k 6k v cc gnd 0.2ma 2 or 3 v cc 2.6v 0.1ma cp gnd 3k 3k 5 gnd 10k 7 15k
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 9 description of pin (cont.) pin no. name dc voltage (v ) peripheral circuit of pins description of function 8 clamp hold variable capacitance is required between the pin and gnd. the response is quicker as the capacitance is smaller, and as it is larger, the response will become more stable. consequently, set this capacitance according to the signal contents. 9 osd.c - capacitance is required between the pin and gnd. 10 clamp + in - input a pulse of 1.9v or more with pulse width 0.7 m s or more. 11 13 f/b - (brightness) f/b + variable it is recommended that the ic be used between pedestal voltage 2v and 3v. v cc gnd 8 v cc gnd 18k 9 200 1k 1k 2k v cc 2.2v gnd 48.8k 10 gnd 1.9v or more v cc gnd 53.9k 11 or 13
mitsubishi ics (monitor) M52721sp wideband video preamplifier with osd mix 10 description of pin (cont.) pin no. name dc voltage (v ) peripheral circuit of pins description of function 15 v cc3 12v impressed power supply for the input stage only. 16 video out variable a 370 w or more resistor is required across gnd. make the resistor wiring as short as possible. 18 osd adjust 0 to 5v impressed do not apply 5v or more dc voltage. when osd mix function is not used, ground the pin to gnd. if external disturbing volt- age intrudes into the pin, which may affect ic out- put, consider the use of an additional by-pass capacitor as well. 19 osd mix in - when not in use, ground the pin to gnd. it is not possible to input osd mix signal only. be sure to input the signal with osd blk signal. 20 osd blk in - when not in use, ground the pin to gnd. cannot be used for blanking of retrace line. gnd 15 44 16 v cc gnd 18 108k 75k 102k v cc 2.0v gnd 80k 19 2.4v gnd 2.2 to 5v gnd 0.5ma 2.4v 20 gnd 2.8 to 5v
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