1 multimedia ics 3-channel, 8-bit d / a converter BU3616K the BU3616K, a cmos ic, is a high-speed, low-power-consumption 3-channel 8-bit d / a converter. its internal ref- erence voltage source eliminates the need for an external reference voltage source. absolute maximum ratings (ta = 25?) parameter symbol limits unit power supply voltage dv dd ?0.5 ~ + 7.0 v v analog power supply voltage av dd p d dv dd ? 0.3 ~ dv dd + 0.3 mw input voltage v in ?0.5 ~ dv dd + 0.5 v output voltage storage temperature power dissipation * 1 v out tstg ?0.5 ~ dv dd + 0.5 ?55 ~ + 125 500 v c * 1 reduced by 5.0mw for each increase in ta of 1 c over 25 c. applications video cds, cd-v, cd karaoke features 1) 8-bit resolution. 2) current output. 3) low power consumption (typically 75mw). 4) high-speed operation. 5) internal reference voltage circuit. 6) ttl input. recommended operating conditions parameter symbol min. typ. max. unit conditions power supply voltage dv dd 4.5 5.5 v analog power supply voltage av dd 4.5 5.0 5.5 v transfer clock width transfer clock width, low level rgb setup time rgb hold time input voltage, low level input voltage, high level operating temperature tck tckl ts th v il v ih t opr 58.8 ns 5.0 15 ns 5 ns 10 ns 0.8 v 2.2 v ?10 70 c
2 multimedia ics BU3616K block diagram 1 111098765432 33 23 24 25 26 27 28 29 30 31 32 12 13 14 15 16 17 18 19 20 21 22 44 43 r1 r2 r3 r4 dv dd1 dgnd1 r5 r6 r7 agnd1 iref b5 b4 b3 b2 dv dd2 dgnd2 b1 b0 clk av dd2 vref outr avddr agndr n.c. outg avddg agndc n.c. outb avddb agndb r0 g7 g6 g5 g4 g3 g2 g1 g0 b7 b6 42 41 40 39 38 37 36 35 34 decoder latch current cell current cell current cell latch latch decoder decoder vref electrical characteristics (unless otherwise noted, ta = 25?, dv dd = 5.0v, av dd = 5.0v, r ref = 6.8k w , r l = 470 w , f ck = 15mhz) parameter symbol min. typ. max. unit conditions current dissipation i cc 15 ma differential linearity error ed ?0.5 lsb linearity error full-scale voltage rgb output voltage ratio output delay time settling time el fs f scr t d t set ?1.0 lsb 1.44 v dv dd = 5.0v av dd = 5.0v r ref = 6.8k w r l = 470 w f ck = 15mhz 0 0.5 % ?0 ns 1.29 40 30 0.5 1.0 1.58 5.0 ?s c l = 15pf c l = 15pf
3 multimedia ics BU3616K pin descriptions pin no. pin name i / o 1 iref 2 agnd 1 3r7 i 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 r6 r5 dgnd1 dv dd 1 r4 r3 r2 r1 r0 g7 g6 g5 g4 g3 g2 g1 g0 b7 b6 b5 b4 b3 b2 dv dd 2 dgnd2 b1 b0 clk av dd 2 vref agndb avddb outb n.c. i i i i i i i i i i i i i i i i i i i i i i i i o o output current adjustment resistor connection, vref output analog ground 1 red data input (bit 7, msb) red data input (bit 6) red data input (bit 5) digital ground 1 digital power supply 1 red data input (bit 4) red data input (bit 3) red data input (bit 2) red data input (bit 1) red data input (bit 0, lsb) green data input (bit 7, msb) green data input (bit 6) green data input (bit 5) green data input (bit 4) green data input (bit 3) green data input (bit 2) green data input (bit 1) green data input (bit 0, lsb) blue data input (bit 7, msb) blue data input (bit 6) blue data input (bit 5) blue data input (bit 4) blue data input (bit 3) blue data input (bit 2) digital power supply 2 digital ground 2 blue data input (bit 1) blue data input (bit 0, lsb) system lock analog power supply 2 attached capacitance-adding pin (c = 0.1 m f) analog ground b analog power supply b blue output function
4 multimedia ics BU3616K input / output circuits pin no. pin name equivalent circuit 3 ~ 5 8 ~ 26 29 ~ 31 r0 ~ r7, g0 ~ g7 b0 ~ b7, clk 36, 40, 44 outr, outg outb 1, 33 33 iref, vref 1 38 39 40 41 42 43 44 agndg avddg outg n.c. agndr avddr outr o o analog ground g analog power supply g green output analog ground r analog power supply r red output pin no. pin name i / o function
5 multimedia ics BU3616K application example 0.1 m f fig.1 1 111098765432 33 23 24 25 26 27 28 29 30 31 32 12 13 14 15 16 17 18 19 20 21 22 44 43 r l r ref red input green input blue input clk red output r l green output r l blue output 42 41 40 39 38 37 36 35 34 decoder latch current cell current cell current cell latch latch decoder decoder vref external dimensions (units: mm) qfp44 33 23 22 12 1 34 44 10.0 0.2 14.0 0.3 0.35 0.1 10.0 0.2 14.0 0.3 1.2 0.05 2.15 0.1 0.15 0.1 0.8 11 0.15
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