DS04-28305-5E
FUJITSU SEMICONDUCTOR
DATA SHEET
ASSP
3-Channel 8-Bit RGB D/A
Converter
MB40978
s
DESCRIPTION
The Fujitsu MB40978 is a 8-bit ultra high speed digital to analog converter for video frequency band fabricated
by Fujitsu Advanced Bipolar Technology. Owing to adoption of RGB 3-channel input/output, it is suitable for
digital TV, graphic display etc.
s
FEATURES
Resolution
: 8bits
Linearity
:
0.2% max.
Maximum Conversion Rate
: 60MSPS min.
Analog Output Voltage Range : V
CC
to V
CC
-1(V)
Digital Input Voltage
: TTL Compatible
Single Power Supply Voltage
: +5.0V
Power Dissipation
: 350mW typ.
Package
: Plastic DIP Package (Suffix: -P)
: Plastic Flat Package (Suffix: -PFQ)
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PACKAGES
(DIP-42P-M02)
42 pin, Plastic SH-DIP
(FPT-44P-M11)
44 pin, Plastic FPT
This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields. However, it is advised that
normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit.
2
MB40978
s
PIN ASSIGNMENTS
R
7
R
8
G
1
G
2
G
3
G
4
G
5
G
6
G
7
G
8
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
CLK
B
CLK
G
CLK
R
R
6
R
5
R
4
R
3
R
2
R
1
V
CCD
V
CCA
GND
R
OUT
GND
G
OUT
GND
B
OUT
GND
V
RIN
V
ROUT
V
CCA
COMP
V
CCD
GND
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
44 43 42 41 40 39 38 37 36 35 34
INDEX
NC
V
CCA
R
OUT
G
OUT
B
OUT
V
RIN
V
CCD
GND GND GND GND
12 13 14 15 16 17 18 19 20 21 22
G
4
G
5
G
6
G
7
G
8
GN B
1
B
2
B
3
B
4
B
5
R
1
R
2
R
3
R
4
R
5
R
6
R
7
R
8
G
1
G
2
G
3
V
ROUT
V
CCA
COMP
V
CCD
GND
CLK
R
CLK
G
CLK
B
B
8
B
7
B
6
3
MB40978
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PIN DESCRIPTION
Pin Number
Symbol
Description
DIP
QFP
1, 2, 37 to
42
1 to 8
R1 to R8
R-channel Digital Signal Inputs
V
IH
=2.0V min.
V
IL
=0.8V max.
3 to 10
9 to 16
G1 to G8
G-channel Digital Signal Inputs
11 to 18
18 to 25
B1 to B8
B-channel Digital Signal Inputs
33
40
R
OUT
R-channel Analog Signal Output
31
38
G
OUT
G-channel Analog Signal Output
29
36
B
OUT
B-channel Analog Signal Output
21
28
CLK
R
R-channel Clock Input
V
IH
=2.0V min.
V
IL
=0.8V max.
20
27
CLK
G
G-channel Clock Input
19
26
CLK
B
B-channel Clock Input
27
34
V
RIN
Reference Voltage Input
26
33
V
ROUT
Reference Voltage Output
24
31
COMP
This pin is provided to connect a phase compensation capacitance.
1
F min capacitor is connected between GND.
25, 35
32, 42
V
CCA
Power Supply for Analog Circuit 5V
5%
23, 36
30, 43
V
CCD
Power Supply for Digital Circuit 5V
5%
22, 28, 30,
32, 34
17, 29, 35,
37, 39, 41
GND
Ground
--
44
N.C.
No connection
4
MB40978
s
BLOCK DIAGRAM
CLK
R
R
OUT
Input
buffer
(R)
Buffer
(R)
Current
switch
(R)
V
ROUT
8
Master
slave
F-F
(R)
8
8
8
8
8
CLK
G
G
OUT
Input
buffer
(G)
Buffer
(G)
Current
switch
(G)
Master
slave
F-F
(G)
G
1
(MSB)
G
2
G
3
G
4
G
5
G
6
G
7
G
8
(LSB)
8
8
8
CLK
B
B
OUT
Input
buffer
(B)
Buffer
(B)
Current
switch
(B)
Master
slave
F-F
(B)
Reference
resistor
Reference
voltage
V
RIN
AMP
COMP
V
CCD
V
CCA
GND
R
1
(MSB)
R
2
R
3
R
4
R
5
R
6
R
7
R
8
(LSB)
B
1
(MSB)
B
2
B
3
B
4
B
5
B
6
B
7
B
8
(LSB)
5
MB40978
s
ABSOLUTE MAXIMUM RATINGS
Note: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional
operation should be restricted to the conditions as detailed in the operational sections of this data sheet.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
s
RECOMMENDED OPERATING CONDITIONS
Note: V
CCA
- V
REF
1.2V
Parameter
Symbol
Rating
Unit
Power supply voltage
V
CCA
, V
CCD
0.5 to +7.0
V
Analog reference voltage
V
RIN
0.5 to V
CCA
+0.5
V
Digital input voltage
V
ID
0.5 to +7.0
V
Storage temperature
T
STG
55 to +125
C
Parameter
Symbol
Value
Unit
Min
Typ
Max
Power supply voltage
V
CCA
, V
CCD
(V
CCA
V
CCD
)
4.75
(0.2)
5.0
5.25
(0.2)
V
Analog reference voltage
V
RIN
3.70
4.00
4.30
V
Digital high-level input voltage
V
IHD
2.0
--
--
V
Digital low-level voltage
V
ILD
--
--
0.8
V
Clock frequency
f
CLK
--
--
60
MHz
Set-up time
t
S
10
--
--
ns
Hold time
t
H
4.0
--
--
ns
Minimum high pulse width
t
W+
7.5
--
--
ns
Minimum low pulse width
t
W
7.5
--
--
ns
Phase compensation capacitance
C
COPM
1.0
--
--
F
Operating temperature
Ta
0
--
70
C
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