BU3618K

Multimedia ICs 3-channel 8-bit D / A converter BU3618K The BU3618K is an RGB 3-channel, 8-bit D / A converter CMOS IC featuring high speed and low power consumption. An internal reference voltage supply eliminates the need to provide an external reference voltage supply. Applications Video-CDs, CD-Vs, CD karaoke sets Features 1) 8-bit resolution. 2) Current output model. 3) Low power consumption. 4) High-speed operation enabled. 5) Internal reference voltage supply. 6) TTL input. Block diagram DGND1 AGND1 2 DVDD1 11 10 9 8 7 6 5 4 3 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 DECODER DECODER VREF 44 43 42 41 40 39 CURRENT CELL 38 37 LATCH CURRENT CELL 36 35 34 OUTR AVDDR AGNDR N.C. OUTG AVDDG AGNDG N.C. OUTB AVDDB AGNDB CURRENT CELL 23 B5 24 B4 25 B3 26 B2 27 DVDD2 LATCH 28 DGND2 29 B1 30 B0 31 CLK 32 AVDD2 33 VREF 1 Multimedia ICs BU3618K Pin descriptions Pin No. I / O Pin name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Function Pin No. I / O Pin name 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Function — — I I I — — I I I I I I I I I I I I I I I IREF AGND1 R7 R6 R5 DGND1 DVDD1 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 For connection of output current adjustment resistor, 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 da...