reference voltage and driver ic for lcd description the CXD2475TQ is suitable ic for applying reference voltage for gamma correction which is necessary for tft liquid crystal display. this ic has a built-in 9 channels of rail-to-rail buffer circuit which enables 2- input switch and a common driver circuit. features built-in 9 channels of rail-to-rail buffer circuit built-in common driver circuit current consumption: 3.6ma (typ.) package: 48pin tqfp structure bi-cmos ic applications small liquid crystal monitor absolute maximum ratings (ta = 25?) supply voltage v cc * 1 7.0 v v vg * 2 7.0 v v vc * 3 v cc + 0.2 v v vg * 4 3 gnd ?0.2 v operating temperature topr ?5 to +85 ? storage temperature tstg ?5 to +150 ? allowable power dissipation (ta 25?) pd 1.72 w reduced ratio (ta < 25?) 13.8 mw/? operating conditions supply voltage v cc * 1 4.5 to 5.0 to 5.5 v v vg * 2 4.0 to v cc v v vc * 3 4.0 to v cc v v vg * 4 0 to 1.0 v * 1 applied to vcc ?gnd. * 2 applied to comvcc ?comgnd * 3 applied to comvcc ?gnd * 4 applied to comgnd ?gnd ?1 e99617-ps sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. CXD2475TQ 48 pin tqfp (plastic)
? 2 CXD2475TQ block diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 nc gnd v7 v8 nc vcc v2 v3 gnd comvcc comout nc buff nc gnd v6 v5 v4 nc vcc v1 v0 gnd nc nc vh3 vl3 vh2 vl2 vh1 vl1 vh0 vl0 sw comsw comgnd nc nc vl4 vh4 vl5 vh5 vl6 vh6 vl7 vh7 vl8 vh8 nc
? 3 CXD2475TQ pin description pin no. symbol pin voltage equivalent circuit description 1 vh3 0.2 to 4.8v dc input when sw is high. 2 vl3 dc input when sw is low. 3 vh2 dc input when sw is high. 4 vl2 dc input when sw is low. 5 vh1 dc input when sw is high. 6 vl1 dc input when sw is low. 7 vh0 dc input when sw is high. 8 vl0 dc input when sw is low. 26 vh8 dc input when sw is high. 27 vl8 dc input when sw is low. 28 vh7 dc input when sw is high. 29 vl7 dc input when sw is low. 30 vh6 dc input when sw is high. 31 vl6 dc input when sw is low. 32 vh5 dc input when sw is high. 33 vl5 dc input when sw is low. 34 vh4 dc input when sw is high. 35 vl4 dc input when sw is low. 0.2 to 4.8v 17 v3 v3 output. 18 v2 v2 output. 21 v8 v8 output. 22 v7 v7 output. 39 v6 v6 output. 40 v5 v5 output. 41 v4 v4 output. 44 v1 v1 output. 45 v0 v0 output. 9 sw input switch. vl is output for low; vh for high. 10 comsw com output switch. comvcc level is output for low; comgnd level for high. 2 4 6 2 9 3 1 3 3 3 5 v c c g n d v h v l 8 2 7 1 3 5 7 2 6 2 8 3 0 3 2 3 4 v c c g n d 3 9 2 2 4 0 1 8 1 7 2 1 4 4 4 1 4 5 v c c g n d 9 1 0
? 4 CXD2475TQ 19 vcc 5.0v 5v power supply. 11 comgnd 0 to 1.0v com output ground. 14 comout com output. 15 comvcc 4.0 to vcc com power supply. 43 vcc 5.0v 5v power supply. 16 gnd gnd. 23 gnd gnd. 38 gnd gnd. 46 gnd gnd. 12 nc no connected. 13 nc no connected. 20 nc no connected. 24 nc no connected. 25 nc no connected. 36 nc no connected. 37 nc no connected. 42 nc no connected. 47 nc no connected. 48 nc no connected. note) gnd make sure that pins 16, 23, 38 and 46 are connected to gnd potential, and do not release them. decoupling capacitor locate decoupling capacitor connected between power supply and gnd as near ic pin as possible. design vh and vl input pins not to have capacity. c o m v c c c o m o u t c o m g n d 1 4 1 1 1 5 pin no. symbol pin voltage equivalent circuit description
? 5 CXD2475TQ electrical characteristics (ta = 25 c, vcc = comvcc = 5v, comgnd = 0v) no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 item current consumption (vcc + comvcc) vh, vl input current high vh, vl input current low sw, comsw input current high sw, comsw input current low vref voltage gain vref output voltage high vref output voltage low comout output voltage high comout output voltage low vref offset voltage vref load regulation sw, comsw input voltage high sw, comsw input voltage low vref transient time (1) vref transient time (2) vref propagation delay time (1) vref propagation delay time (2) vref propagation delay time difference (1) vref propagation delay time difference (2) com transient time com propagation delay time com propagation delay time difference symbol icc iih iil iish iisl av voh vol vcoh vcol voff ? vo vih vil ttvlh1 ttvhl1 ttvlh2 ttvhl2 tpvlh1 tpvhl1 tpvlh2 tpvhl2 ? tpv1 ? tpv2 ttclh ttchl tpclh tpchl ? tpc condition input voltage = 2.5v input voltage = 4.8v input voltage = 0.2v input voltage = 5v input voltage = 0v input voltage = 0.2 to 4.8v i source = 10ma i sink = 10ma i source = 10ma i sink = 10ma input voltage = 0.2 to 4.8v i source = 10ma i sink = 10ma measurement circuit 1 measurement circuit 2 measurement circuit 1 measurement circuit 2 tpvlh1 tpvhl1 tpvlh2 tpvhl2 measurement circuit 3 measurement circuit 3 tpclh tpchl min. ?.1 ?.1 ?.1 ?.4 0.985 vcc ?0.2 comvcc ?0.1 2 typ. 3.6 5 5 3.5 3.5 2.5 3 1.6 max. 6.0 0.1 0.1 0.1 0.1 0.2 comgnd + 0.1 20 10 0.8 8 6 6 5 1.6 0.8 5 3 1 unit ma a a a a v/v v v v v mv mv v v s s s s s s s s s
? 6 CXD2475TQ measurement circuits measurement circuit 1 v h 2 2 2 7 n f 4 . 8 v 0 . 2 v m e a s u r e m e n t p o i n t v l v 0 measurement circuit 2 v h 4 . 8 v 0 . 2 v m e a s u r e m e n t p o i n t v l v 0 measurement circuit 3 c o m v c c 2 2 2 7 n f 5 . 0 v 0 v m e a s u r e m e n t p o i n t c o m g n d c o m o u t 5 0 % s w / c o m s w o u t p u t w a v e f o r m 5 0 % 5 0 % 9 0 % t p l h t p h l t t l h t t h l 1 0 %
? 7 CXD2475TQ application circuit 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 b u f f v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c v c c t o l c d t o l c d t o l c d t o l c d t o l c d t o l c d t o l c d t o l c d t o l c d 4 . 5 v 0 . 5 v 4 7 0 . 0 1 5 v 4 7 0 . 0 1 4 7 0 . 0 1 p o l a r i t y i n v e r t e d p u l s e t o l c d ( v c o m ) application circuits shown are typical examples illustrating the operation of the devices. sony cannot assume responsibility fo r any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same .
? 8 CXD2475TQ package outline unit: mm 4 8 p i n t q f p ( p l a s t i c ) s o n y c o d e e i a j c o d e j e d e c c o d e p a c k a g e s t r u c t u r e p a c k a g e m a t e r i a l l e a d t r e a t m e n t l e a d m a t e r i a l p a c k a g e w e i g h t e p o x y r e s i n s o l d e r p l a t i n g 4 2 a l l o y t q f p - 4 8 p - l 1 1 1 p - t q f p 4 8 - 7 x 7 - 0 . 5 b 1 . 1 m a x b 0 t o 1 0 0 . 5 0 . 1 5 ( 8 . 0 0 . 1 5 ) 0 . 1 0 . 1 b = 0 . 2 0 . 0 8 0 . 1 5 0 . 0 5 d e t a i l b : s o l d e r d e t a i l a s s 0 . 1 0 0 . 8 0 . 3 ( 1 . 0 ) a m s 0 . 1 5 0 . 5 9 . 0 0 . 3 7 . 0 0 . 2 1 1 2 3 6 2 5 3 7 4 8 2 4 1 3 0 . 1 4 g
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