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