DS04-28313-1E
FUJITSU SEMICONDUCTOR
DATA SHEET
ASSP Image Processing
BIPOLAR
D/A Converter
(1-ch, 8-bit, 60 MSPS)
MB40768H
s
DESCRIPTION
The MB40768H is a low-power and high-speed 8-bit D/A converter.
The digital input is TTL compatible and the analog output voltage is 3 to 5 V. Maximum conversion speed is 60
MHz. The internal reference voltage provided has two types of resistor division scheme and band-gap reference
scheme; the external reference voltage may also be used.
The MB40768H is suitable for high-definition TV or VCR application.
s
FEATURES
· Resolution: 8 bits
· Conversion characteristics: Maximum conversion rate: 60 MSPS [min.]
Linearity error: ±0.2 % [max.]
· I/O: Digital input voltage: TTL level
Analog output voltage: 2V
P-P
(3 to 5 V)
· Reference voltage:
V
ROUT1
: Resistor division circuit (0.6
×
V
CCA
)
V
ROUT2
: Band-gap reference circuit (V
CCA
2 V)
· Power supply voltage: +5 V single power supply
· Power consumption: 160 mW [typical value for the analog output voltage of 2 V
P-P
]
120 mW [typical value for the analog output voltage of 1 V
P-P
]
s
PACKAGES
18-pin Plastic DIP
(DIP-18P-M02)
20-pin Plastic SOP
(FPT-20P-M01)
2
MB40768H
s
PIN ASSIGNMENTS
s
PIN DESCRIPTIONS
Pin No.
Pin name
I/O
Description
DIP
SOP
1 to 8
1 to 8
D
1
to D
8
I
Input pins for data signals (D
1
: MSB, D
8
: LSB)
18
20
CLK
I
Input pin for clock signal
17
19
V
CCD
--
Digital power supply pin (+5 V)
16
18
V
CCA
--
Analog power supply pin (+5 V)
9
10
D.GND
--
Digital ground pin (0 V)
10
11
A.GND
--
Analog ground pin (0 V)
13
15
V
RIN
I
Reference voltage input pin.
Used for setting dynamic range for analog output.
Connect this pin with either V
ROUT1
or V
ROUT2
pin when using the
internal reference voltage.
When using the external reference voltage, use it within the
range of 2.65 to 4.3 V or for the V
CCA
V
RIN
range of 0.7 to 2.2 V.
12
14
V
ROUT1
O
Reference voltage output pin 1.
Resistance division reference voltage, with its output voltage set
to 0.6
×
V
CCA
.
This pin, if connected with the V
RIN
pin, provides V
CCA
analog
output voltage at 0.6
×
V
CCA
.
14
16
V
ROUT2
O
Reference voltage output pin 2.
Band-gap reference voltage, with its output voltage set to V
CCA
2 [V]. This pin, if connected with the V
RIN
pin, provides the V
CCA
analog output voltage at V
CCA
1 2 [V].
11
12
COMP
--
Phase compensated capacitance pin.
Insert the capacitance of 0.1
µ
F or more between this pin and the
A.GND for the phase compensated capacitance.
15
17
A.OUT
O
Analog signal output pin
--
9, 13
N.C.
--
No connection pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CLK
(MSB) D
1
(LSB) D
8
D
7
D
6
D
5
D
4
D
3
D
2
D.GND
V
CCD
A.OUT
A.GND
COMP
V
CCA
V
ROUT2
V
RIN
V
ROUT1
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
10
(MSB) D
1
(LSB) D
8
D
7
D
6
D
5
D
4
D
3
D
2
D.GND
N.C.
CLK
V
CCD
A.OUT
A.GND
COMP
V
CCA
V
ROUT2
V
RIN
V
ROUT1
N.C.
19
20
(Top view)
(Top view)
(FPT-20P-M01)
(DIP-18P-M02)
3
MB40768H
s
BLOCK DIAGRAM
CLK
(MSB)
D
1
D
7
D
6
D
5
D
4
D
3
D
2
D.GND
V
CCD
A.OUT
A.GND
COMP
V
CCA
V
ROUT2
V
RIN
V
ROUT1
D
8
(LSB)
V
CCA
Amp
Reference resistor
Reference
voltage 1
0.6
×
V
CCA
R
R
R
R
R
R
2R
2R
2R
2R
R
8
8
8
Input buffer
Master slave flip-flop
Buffer
Current switch
Reference
voltage 2
V
CCA
2 V
4
MB40768H
s
ABSOLUTE MAXIMUM RATINGS (See WARNING)
(A.GND = D.GND = 0 V)
WARNING: 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
(A.GND = D.GND = 0 V)
Parameter
Symbol
Rating
Units
Power supply
voltage
Analog power supply
voltage
V
CCA
0.5 to +7.0
V
Digital power supply
voltage
V
CCD
0.5 to +7.0
V
Power supply voltage
difference
V
CCD
V
CCA
1.5
V
Digital signal input voltage
V
ID
0.5 to +7.0
V
Storage temperature
Tstg
55 to +125
°
C
Parameter
Symbol
Value
Units
Min.
Typ.
Max.
Power supply
voltage
Analog power supply
voltage
V
CCA
4.75
5.00
5.25
V
Digital power supply
voltage
V
CCD
4.75
5.00
5.25
V
Power supply voltage
difference
V
CCA
V
CCD
0.2
--
0.2
V
Analog reference voltage
V
CCA
V
RIN
0.70
2.00
2.20
V
V
RIN
2.65
3.00
4.30
V
Digital High level input voltage
V
IHD
2.0
--
--
V
Digital Low level input voltage
V
ILD
--
--
0.8
V
Clock frequency
f
CLK
--
--
60
MHz
Setup time
t
su
8
--
--
ns
Hold time
t
h
2
--
--
ns
High level minimum pulse width
t
wH
6.5
--
--
ns
Low level minimum pulse width
t
wL
6.5
--
--
ns
Phase compensated capacitance
C
COMP
0.1
--
--
µ
F
Operating ambient temperature
Top
20
--
+75
°
C
5
MB40768H
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ELECTRIC CHARACTERISTICS
1.
DC Characteristics
(V
CCA
= V
CCD
= 4.75 V to 5.25 V, A.GND = D.GND = 0 V, Ta = 20
°
C to +75
°
C)
* : V
CCA
= V
CCD
= 5 V
2.
AC Characteristics
(V
CCA
= V
CCD
= 4.75 V to 5.25 V, A.GND = D.GND = 0 V, Ta = 20
°
C to +75
°
C)
Parameter
Symbol
Condition
Value
Units
Min.
Typ.
Max.
Resolution
--
--
--
--
8
bit
Linearity error
LE
DC precision
--
--
±0.2
%
Digital High level input current
I
IHD
V
IHD
= 2.7 V
--
--
20
µ
A
Digital Low level input current
I
ILD
V
ILD
= 0.4 V
100
--
--
µ
A
Reference input current
I
RIN
V
RIN
= 3.000 V
--
--
10
µ
A
Resistance
division
method
Reference
voltage
V
ROUT1
V
CCA
= 5.00 V
V
CCD
= 5.00 V
2.900
3.000
3.100
V
Band-gap
reference
method
Reference
voltage
V
ROUT2
--
V
CCA
2.100 V
CCA
2.000 V
CCA
1.900
V
Temperature
coefficient
--
--
--
100
--
ppm/
°
C
Full-scale output voltage
V
OFS
--
V
CCA
20
V
CCA
--
mV
Zero-scale output voltage
V
OZS
V
CCA
= 5.00 V
V
CCD
= 5.00 V
V
RIN
= 3.000 V
2.938
3.008
3.078
V
Output resistance
R
O
Ta = +25°C
192
240
288
Current consumption
I
CC
V
CCA
= 5.25 V
V
CCD
= 5.25 V
V
RIN
= V
ROUT1
--
32*
56
mA
Parameter
Symbol
Condition
Value
Units
Min.
Typ.
Max.
Maximum conversion rate
F
s
C
L
= 15 pF
Terminal
resistance at
A.OUT pin =
240
60
--
--
MSPS
Output propagation time
t
pd
--
7
--
ns
Output rise time
t
r
--
5
--
ns
Output fall time
t
f
--
5
--
ns
Settling time
t
set
--
15
--
ns
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