Datasheet BU3616K Datasheet (ROHM)

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 ref­erence voltage source eliminates the need for an external reference voltage source.

•

Absolute maximum ratings (Ta = 25°C)

Parameter Symbol Limits Unit

Power supply voltage DV

DD – 0.5 ~ + 7.0 V

V

Analog power supply voltage AV

DD

PD

DVDD –

0.3

~

DVDD +

0.3

mW

Input voltage V

IN – 0.5 ~ DVDD + 0.5 V

Output voltage
Storage temperature
Power dissipation

∗

1

VOUT
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

VIH

TOPR

58.8 — — ns

5.0

15 — ns

5——ns

10 — — ns

—

— 0.8 V

2.2 — — V

– 10 — 70 °C

—

2

Multimedia ICs BU3616K

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Block diagram

1111098765432

3323 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

DGND1R5R6

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

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Electrical characteristics (unless otherwise noted, Ta = 25°C, DVDD = 5.0V, AVDD = 5.0V, RREF = 6.8kΩ, RL = 470Ω,

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

TD

TSET

– 1.0 — LSB

—

1.44 V

DV

DD = 5.0V AVDD = 5.0V

R

REF = 6.8kΩ RL = 470Ω

F

CK = 15MHz

0 0.5 %

—30 ns

1.29

40

30

0.5

1.0

1.58

5.0
—
—ns

C

L = 15pF

C

L = 15pF

—

3

Multimedia ICs BU3616K

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Pin descriptions

Pin No. Pin nameI / O

1 Iref

—

2 AGND 1

—
3R7I
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 µF)
Analog ground B
Analog power supply B
BLUE output

Function

—

4

Multimedia ICs BU3616K

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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 nameI / O Function

5

Multimedia ICs BU3616K

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Application example

0.1µF

Fig.1

1111098765432

3323 24 25 26 27 28 29 30 31 32

12

13

14

15

16

17

18

19

20

21

22

44

43

R

L

RREF

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

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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