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september 2000 1/15 version 4.2 TDA9536 7.5 ns triple-channel high voltage video amplifier features n triple-channel video amplifier n supports dc coupling (optimum cost saving) and ac coupling applications. n built-in voltage gain: 19.3 (typ.) n rise and fall times: 7.5ns (typ.) n bandwidth: 50mhz (typ.) n 80v output dynamic range n supply voltage: 110v n perfectly matched with the tda9210 preamplifier n full pin compatibility with the tda9535 description the TDA9536 is a triple-channel video amplifier designed in bcd technology (bipolar/cmos/ dmos) able to drive the 3 cathodes of a crt monitor. perfectly matched with the st preamplifier tda9210, it provides a high performance, and very cost effective dc coupling system. . pin connections clipwatt 11 order code: TDA9536 (plastic package) 1 2 3 4 5 6 7 8 9 10 11 out3 gnd3 in3 v cc out2 v dd in2 gnd2 in1 gnd1 out1 1
TDA9536 2/15 1 block diagram 2 pin connections pin name function 1 out1 output-channel 1 2 gnd1 power ground-channel 1 3 in1 video input-channel 1 4 v dd amplifier high supply voltage 5 out2 output-channel 2 6 gnd2 power ground-channel 2/ ground substract 7 in2 video input-channel 2 8 v cc low supply voltage 9 in3 video input-channel 3 10 gnd3 power ground-channel 3 11 out3 output-channel 3 TDA9536 3 7 9 10 11 6 5 2 1 4 8 out3 gnd3 gnd2 out2 gnd1 out1 v dd v cc in3 in2 in1 v ref v ref v ref 2
TDA9536 3/15 3 absolute maximum ratings 4 thermal data symbol parameter value unit v dd high supply voltage 120 v v cc low supply voltage 17 v v esd esd susceptibility human body model (100pf discharged through 1.5k w) eiaj norm (200pf discharged through 0 w) 2 300 kv v i od output source current (pulsed < 50 m s) 80 ma i og output sink current (pulsed < 50 m s) 80 ma v in max maximum input voltage 15 v v in min minimum input voltage - 0.5 v t j junction temperature 150 c t stg storage temperature -20 + 150 c symbol parameter value unit r th (j-c) junction-case thermal resistance (max.) 3 c/w r th (j-a) junction-ambient thermal resistance (typ.) 35 c/w 2
TDA9536 4/15 5 electrical characteristics note 1: the tda 9536 goes into stand-by mode when vcc is switched off (<1.5v). in stand-by mode, vout is set to high level. note 2: matching measured between each channel. note 3: pulsed current width < 50 m s symbol parameter test conditions min. typ max unit supply parameters (v cc = 12v, v dd = 110v, tamb = 25 c, unless otherwise specified) v dd high supply voltage (pin 5) 20 110 115 v v cc low supply voltage (pin 11) 10 12 15 v i dd v dd supply current v out = 50v 25 ma i dds v dd stand-by supply current v cc : switched off (<1.5v) v out : high (note 1) 12 ma i cc v cc supply current v out = 50v 60 ma static parameters (v cc = 12v, v dd = 110v, tamb = 25 c) dv out /dv dd high voltage supply rejection v out = 50v 0.5 % dv out /dt output voltage drift versus temperature v out = 80v 15 mv/ c d d v out /dt output voltage matching versus temperature (note 2) v out = 80v 5 mv/ c r in video input resistor v out = 50v 2 k w v sath output saturation voltage to supply i 0 =-60ma (note 3) v dd - 6.5 v v satl output saturation voltage to gnd i 0 =60ma (note 3) 11 v vg video gain v out = 50v 19.3 le linearity error 17 TDA9536 5/15 electrical characteristics (continued) note 4: matching measured between each channel. figure 1. ac test circuit symbol parameter test conditions min. typ max unit dynamic parameters (see figure 1) os1 overshoot, white to black transition 5 % os2 overshoot, black to white transition 1 % d vg low frequency gain matching (note 4) v dc = 50v, f=1mhz 5 % bw bandwidth at -3db v dc =50v, d v=20v pp 50 mhz t r rise time v dc =50v, d v=40v pp 7.2 ns t f fall time v dc =50v, d v=40v pp 7.9 ns t set 2.5% settling time v dc =50v, d v=40v pp 15 ns ct l low frequency crosstalk v dc =50v, d v=20v pp f = 1 mhz 50 db ct h high frequency crosstalk v dc =50v, d v=20v pp f = 20mhz 32 db TDA9536 75 w in c l =8pf gnd out r p = 200 w 1 4 8 v dd v cc 110v 12v d v v dc v ref 2 3 2
TDA9536 6/15 6 theory of operation 6.1 - general the TDA9536 is a three-channel video amplifier supplied by a low supply voltage: v cc (typ.12v) and a high supply voltage: v dd (up to 115v). the high values of v dd supplying the amplifier out- put stage allow direct control of the crt cathodes (dc coupling mode). in dc coupling mode, the application schematic is very simple and only a few external components are needed to drive the cathodes. in particular, there is no need of the dc-restore circuitry which is used in classical ac coupling applications. the output voltage range is wide enough (figure 2) to provide simultaneously : cut-off adjustment (typ. 25v) video contrast (typ. up to 40v), brightness (with the remaining voltage range). in normal operation, the output video signal must remain inside the linear region whatever the cut- off / brightness / contrast adjustment is. figure 2. output signal, level adjustments 6.2 - how to choose the high supply voltage value (v dd) the v dd high supply voltage must be chosen care- fully. it must be high enough to provide the neces- sary video adjustment but set to minimum value to avoid unecessary power dissipation. example: the following example shows how the optimum v dd voltage value is determined: cut-off adjustment range (b) : 25v max contrast (d) : 40v case 1: 10v brightness (c) adjusted by the preamplifier : v dd =a+b+c+d+e v dd = 15v + 25v + 10v + 40v + 17v = 107v case 2: 10v brightness (c) adjusted by the g1 anode: v dd =a+b+d+e v dd = 15v + 25v + 40v + 17v = 97v (a) top non-lin ear region linear region v dd (e) bottom non-linear region gnd blanking pulse video signal (b) cut-off adjust. (25v typ.) (c) brightness adjust. (10v typ.) (d) contrast adjust. (40v typ.) 15v 17v 2
TDA9536 7/15 6.3 - amplifier gain and cut-off adjustment a very simplified schematic of each TDA9536 channel is shown in figure 3. the feedback net of each channel is integrated with a built-in voltage gain of 19.3 (40k/2k). the output voltage v out is given by the following formula: v out = (vg+1) x v ref -(vgxv in ) for vg = 19.3 and v ref = 5.5v, we have v out = 111.6 - 19.3 x v in figure 3. simplified schematic of one channel 7 arcing protection as the amplifier outputs are connected to the crt cathodes, special attention must be given to por- tect them against possible arcing inside the crt. protection must be considered when starting the design of the video crt board. it should always be implemented before starting to adjust the dy- namic video response of the system. the arcing network that we recommend (see figure 4) provides efficient protection without de- teriorating the amplifier video performances. the total resistance value between the amplifier and the crt cathode (r10+r11) should not be less than 300 w . spark gap diodes are strongly recommended for protection against arcing. figure 4. arcing protection network (one channel) 2k 40k gnd v dd out in v ref + - r11 r29 10 w 150 w /0.5w c18 100nf c24 4.7 m f/150v c12 100nf/250v r19 33 w r10 150 w /0.5w l1 0.39 m h d12 fdh400 f1 tda9535 high voltage (90-110v) v dd gnd out spark gap ( * ) ( * ): to be connected as close as possible to the device. TDA9536
TDA9536 8/15 8 video response optimization the dynamic video response is optimized by care- fully designing the supply decoupling of the video board (see section 8.1), the tracks (see section 8.2), then by adjusting the input/output component network (see section 8.3). for dynamic measurements such as rise/fall time and bandwidth, a 8pf load is used (total load in- cluding the parasitic capacitance of the pc board and crt socket). figure 5. video response optimization for one channel 8.1 supply decoupling the decoupling of v cc and v dd through good quality hf capacitors (respectively c10 and c12) close to the device is necessary to improve the dy- namic performance of the video signal. 8.2 - tracks careful attention has to be given to the three out- put channels of the amplifier. capacitor: the parasitic capacitive load on the amplifier outputs must be as small as possible. figure 11 clearly shows the deterioration of the t r /t f when the capacitive load increases. reducing this capacitive load is achieved moving away the output tracks from the other tracks (especially ground) and by using thin tracks (<0.5mm), see figure 13. cross talk: output and input tracks must be set apart. we recommend to install input and out- put tracks on opposite sides of the amplifier. once again, this is achievable by using thin tracks (<0.5 mm) to pass through the pin of the device, see figure 13 (b). length: connection between amplifier output and cathode must be as short and direct as possible. 8.3 - network adjustment video response is always a compromise between several parameters. an improvement of the rise/ fall time leads to a deterioration of the overshoot. the recommended way to optimize the video re- sponse is: 1 to set r10+r11 for arcing protection (min. 300 w ) 2. to adjust r20 and r10+r11. increasing their value increases the t r /t f values and decrease the overshoot 3. to adjust l1 increasing l1 speeds up the device and increases the overshoot. we recommend our customers to use the sche- matic shown on figure 5 as a starting point for the video board and then to apply the optimization they need. c24 4.7 m f c11 4.7 m f r10 l1 r11 crt r20 15/50 w out v cc v dd tda9207 tda9209 TDA9536/35 gnd in 150 w 150 w 0.39 m h ( * ): to be connected as close as possible to the device c10( * ) 100nf c12( * ) 100nf gnds v ref - +
TDA9536 9/15 9 power dissipation the total power dissipation is the sum of the static dc and the dynamic dissipation: p tot =p stat +p dyn . the static dc power dissipation is approximately: p stat =v dd xi dd +v cc xi cc the dynamic dissipation is, in the worst case (1 pixel on/ 1 pixel off pattern): p dyn =3v dd xc l xv out(pp) xfxk where f is the video frequency and k the ratio be- tween the active line and the total horizontal line duration. example: for v dd = 110v, v cc = 12v, i dd = 25ma, i cc = 60ma, v out =40v pp , f = 40mhz, c l = 8pf and k = 0.72. we have: p stat = 3.47w, p dyn = 3.04w therefore: p tot = 6.51w. note 4: this worst thermal case must only be considered for tjmax calculation. nevertheless, during the average life of the circuit, the conditions are closer to the white picture conditions.
TDA9536 10/15 10 typical performance characteristics v dd =110v, v cc =12v, c l =8pf, r p =300 w , d v=40v pp , unless otherwise specified - see figure 1 figure 6. TDA9536 pulse response figure 7. v out versus v in figure 8. power dissipation versus frequency figure 9. speed versus temperature figure 10. speed versus offset figure 11. speed versus load capacitance 0 20 40 60 80 100 120 0123456 vin (v) vout (v) 0 2 4 6 8 10 12 10 20 30 40 50 square wave frequency (mhz) total power dissipation (w) (72% active time) 6.5 6.7 6.9 7.1 7.3 7.5 7.7 7.9 8.1 8.3 8.5 60 70 80 90 100 110 120 cas e temperature ( c) speed (ns) tf tr 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 40 45 50 55 60 65 70 offset voltage (vdc) speed (ns) tf tr 6 6.5 7 7.5 8 8.5 9 9.5 10 8121620 load capacitance (mhz) speed (ns) tf tr rp = 100 ohms
TDA9536 11/15 figure 12. tda9210 - tda9535/9536 demonstration board: silk screen and trace figure 13. amplifier and preamplifier outputs. trace routing (detail) 13(b) 13(a) in1 in2 in3 out1 out2 out3
TDA9536 12/15 figure 14. tda9535/9536 - tda9210 demonstration board schematic a a b b c c d d e e 4 4 3 3 2 2 1 1 notes: 1: all capacitorsfollowed by (1) are decoupling capacitors which must be connected as close as possible to the device transient response optimisation 2: the purpose of all components followed by (2) is to ensure a good protectionagainst overvoltage(arcing protection) version 1.4 crt3 with tda9210 + tda9535/36 custom 11 wednesday, february 16,2000 title size document number rev date: sheet of grn red blu 5v 5v 5v 110v 8v 8v 110v 5v 5v 12v 110v 5v 110v 110v 12v 5v 110v 5v r11 2r7 f2(2) d7(2) fdh400 c19 10nf/ 2kv j5 56 7 8 9 10 11 12 1 g1 g g2 r h2 h1 b gnd gnd r19 2k7 u2 tda9535/36 1 2 3 4 5 6 7 8 9 10 11 out1 gnd1 in1 vdd out2 gnd2 in2 vcc in3 gnd3 out3 c10(1) 100nf / 250v c15 47uf c17 47uf c24 47pf d5 1n4148 c9(1) 100nf r6 120r c16 47uf c4 100nf r30 s_r r12 15r r14 120r j7 gnd_crt r27 150r r17 15r/33r c6 100nf d9(2) fdh400 j1 video 1 2 3 4 5 6 7 8 9 10 11 12 r10 75r c14 10nf/ 400v r28 10r j8 g2 r1 100r r4 2r7 r29 24r r31 s_r c1(1) 100pf c7(1) 100nf r3 75r c22(1) 100nf d8 1n4148 r21 2k7 c13 100pf r24 24r d6 1n4148 r9 15r/33r j16 power 1 2 3 4 5 r18 100r d1 1n4148 r22 120r l2 0.33uh j10 i2c 1 2 3 4 r16 2r7 d4 1n4148 r5 75r c5(1)100nf c21 100nf/ 250v r15 150r r32 s_r r20 100r c8 47uf f1(2) r23 150r c18 4.7uf/ 150v d3 1n4148 d2(2) fdh400 r7 150r c23 47pf r8 15r r33 24r r2 15r f4(2) c12 100pf j17 supply 1 2 3 4 5 6 c20 4.7nf/1kv l1 0.33uh c25 47pf r26(2) 39r l3 0.33uh u1 tda9210 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 in1 abl in2 gndl in3 gnda vcca osd1 osd2 osd3 fblk scl sca out3 gndp out2 vccp out1 hs blk c3 100nf r13 15r/33r heater heater vs out vsout hs out g1 hs out g1
TDA9536 13/15 11 package mechanical data 11 pin - clipwatt table 1 dimensions millimeters inches min. typ. max. min. typ. max. a 2.95 3.00 3.05 0.116 0.118 0.120 b 0.95 1.00 1.05 0.037 0.039 0.041 c 0.15 0.006 d 1.30 1.50 1.70 0.051 0.059 0.066 e 0.49 0.515 0.55 0.019 0.020 0.021 f 0.78 0.80 0.88 0.031 0.033 0.034 g 1.60 1.70 1.80 0.063 0.067 0.071 g1 16.90 17.00 17.10 0.665 0.669 0.673 h1 12.00 0.472 h2 18.55 18.60 18.65 0.730 0.732 0.734 h3 19.90 20.00 20.10 0.783 0.787 0.791 (5) l 17.70 17.90 18.10 0.696 0.704 0.712 l1 14.35 14.55 14.65 0.564 0.572 0.576 l2 10.90 11.00 11.10 0.429 0.433 0.437(5) l3 5.40 5.50 5.60 0.212 0.216 0.220 m 2.34 2.54 2.74 0.092 0.100 0.107 m1 2.34 2.54 2.74 0.092 0.100 0.107 r 1.45 0.057 g1 f g2 g lead#1 r1 l2 l3 s v1 h3 h2 h1 r2 r v a c v2 v1 v1 v1 v d r3 b r3 r3 e m m1 l1 l
TDA9536 14/15 note 5: ah3 and l2o do not include mold flash or protrusions mold flash or protrusions shall not exceed 0.15mm per side. r1 3.20 3.30 3.40 0.126 0.130 0.134 r2 0.30 0.012 r3 0.50 0.019 s 0.65 0.70 0.75 0.025 0.027 0.029 v 10deg. 10deg. v1 5deg. 5deg. v2 75deg. 75deg. table 1 dimensions millimeters inches min. typ. max. min. typ. max.
15/15 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this public ation are subject to change witho ut notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a trademark of stmicroelectronics. ? 2000 stmicroelectronics - all rights reserved purchase of i 2 c components of stmicroelectronics, conveys a license under the philip s i 2 c patent. rights to use these components in a i 2 c system, is granted provided that the system conforms to the i 2 c standard specifications as defined by philip s. stmicroelectronics group of companies australia - brazil - china - finland - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. http://www .st.com 3

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