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 consump-
tion. An internal reference voltage supply eliminates the need to provide an external reference voltage supply.
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Applications CD karaoke sets
Video-CDs, CD-Vs,
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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.
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Block diagram
DGND1
AGND1
2
DV
DD
1
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
AV
DD
R
AGNDR
N.C.
OUTG
AV
DD
G
AGNDG
N.C.
OUTB
AV
DD
B
AGNDB
CURRENT
CELL
23
B5
24
B4
25
B3
26
B2
27
DV
DD
2
LATCH
28
DGND2
29
B1
30
B0
31
CLK
32
AV
DD
2
33
VREF
1
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