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| 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 reference voltage source eliminates the need for an external reference voltage source. *Applications CD karaoke Video CDs, CD-V, *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. *Absolute maximum ratings (Ta = 25C) Parameter Power supply voltage Analog power supply voltage Input voltage Output voltage Storage temperature Power dissipation1 Symbol DVDD AVDD VIN VOUT Tstg PD Limits - 0.5 ~ + 7.0 DVDD - 0.3 ~ DVDD + 0.3 - 0.5 ~ DVDD + 0.5 - 0.5 ~ DVDD + 0.5 - 55 ~ + 125 500 Unit V V V V C mW 1 Reduced by 5.0mW for each increase in Ta of 1C over 25C. *Recommended operating conditions Parameter Power supply voltage Analog power supply voltage Transfer clock width Transfer clock width, low level RGB setup time RGB hold time Input voltage, low level Input voltage, high level Operating temperature Symbol DVDD AVDD TCK TCKL TS TH VIL VIH TOPR Min. 4.5 4.5 58.8 15 5 10 -- 2.2 - 10 Typ. 5.0 5.0 -- -- -- -- -- -- -- Max. 5.5 5.5 -- -- -- -- 0.8 -- 70 Unit V V ns ns ns ns V V C Conditions 1 Multimedia ICs BU3616K *Block diagram DGND1 AGND1 DVDD1 11 10 9 8 7 6 5 4 3 2 Iref 1 R1 R2 R3 R4 R5 R6 R7 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 12 13 14 LATCH 15 16 17 18 19 20 21 22 DECODER 44 43 42 41 CURRENT CELL 40 39 CURRENT CELL 38 37 LATCH CURRENT CELL 36 35 34 OUTR AVDDR AGNDR N.C. OUTG AVDDG AGNDC N.C. OUTB AVDDB AGNDB Vref DECODER 23 B5 24 B4 25 B3 26 B2 DECODER 27 DVDD2 28 DGND2 LATCH 29 B1 30 B0 31 CLK 32 AVDD2 33 Vref *Electrical characteristics (unless otherwise noted, Ta = 25C, DVDD = 5.0V, AVDD = 5.0V, RREF = 6.8k, RL = 470, FCK = 15MHz) Parameter Current dissipation Differential linearity error Linearity error Full-scale voltage RGB output voltage ratio Output delay time Settling time Symbol ICC ED EL FS FSCR TD TSET Min. -- - 0.5 - 1.0 1.29 0 -- -- Typ. 15 -- -- 1.44 0.5 30 40 Max. 30 0.5 1.0 1.58 5.0 -- -- Unit mA LSB LSB V % ns ns CL = 15pF CL = 15pF DVDD = 5.0V AVDD = 5.0V RREF = 6.8k RL = 470 FCK = 15MHz Conditions 2 Multimedia ICs BU3616K *Pin descriptions Pin No. 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 I/O -- -- I 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 -- Pin name Iref AGND 1 R7 R6 R5 DGND1 DVDD1 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 DVDD2 DGND2 B1 B0 CLK AVDD2 Vref AGNDB AVDDB OUTB N.C. Function 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 F) Analog ground B Analog power supply B BLUE output -- 3 Multimedia ICs Pin No. 38 39 40 41 42 43 44 I/O -- -- O -- -- -- O Pin name AGNDG AVDDG OUTG N.C. AGNDR AVDDR OUTR Analog ground R Analog power supply R RED output Analog ground G Analog power supply G GREEN output -- Function 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 33 1, 33 Iref, Vref 1 4 Multimedia ICs BU3616K *Application example RED INPUT 11 10 9 8 7 6 5 4 3 2 1 RREF 12 GREEN INPUT 13 14 LATCH 15 16 17 18 19 20 21 22 DECODER 44 43 42 41 CURRENT CELL 40 39 CURRENT CELL 38 37 LATCH CURRENT CELL 36 35 34 BLUE OUTPUT RL GREEN OUTPUT RL RED OUTPUT RL Vref DECODER 23 BLUE INPUT CLK 24 25 26 DECODER 27 28 LATCH 29 30 31 32 33 0.1F Fig.1 * External dimensions (Units: mm) 14.0 0.3 10.0 0.2 33 23 14.0 0.3 10.0 0.2 34 22 44 1 11 12 2.15 0.1 0.05 0.8 0.35 0.1 0.15 QFP44 1.2 0.15 0.1 5 |
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