8-BIT 8-CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
GENERAL DESCRIPTION
The M62364FP is a CMOS 8-bit, 8-ch D/A converter having a
multiplying function and output buffer amplifiers. It has a serial data
input and can easily communicate with a microcontroller by the
simple three-wiring method (DI, CLK, LD).
The output buffer amplifiers operating in AB-class has both sinking
and driving capabilities of 1.0mA or more and can operate in a whole
supply range from VDD to GND.
The IC is suitable for a use in automatic adjustment applications in
conjunction with a MCU by utilizing the terminal DO for a cascading
connection.
FEATURES
• Three-wiring serial data transmission
• Doubled precision 8-ch D/A converter employing an R-2R with
higher-order segment method
• 8 buffer amplifiers operating in a whole supply voltage range from
VDD to GND
• 4-quadrant multiplication
APPLICATION
Digital to analog conversion for consumer and industrial equipment.
Gain setting and automatic adjustment of display-monitor and CTV.
PIN CONFIGURATION (TOP VIEW)
VIN1
VOUT1
VOUT2
VIN2
VDD
CLK
DI
VIN3VIN6
VOUT3VOUT6
VOUT4VOUT5
VIN4VIN5
1
2
3
4
5
6
7
8
9
10
11
12
Outline 24P2Q (FP)
M62364FP
24
23
22
21
20
19LDRESET
18
17
16
15
14
13
VIN8
VOUT8
VOUT7
VIN7
GND
VDAref
DO
BLOCK DIAGRAM
DI
8
CLK
7
RESET
19
D-A CONVERTER
VIN1VOUT1VIN8VOUT8
VDD
5
D0D1D2D3D4D5D6D7D8D9D10D11
8-bit Latch
12
12-bit SHIFT REGISTER
ADDRESS DECODER
8-bit Latch
D-A CONVERTER
24
23
20
GND
17
18
6
DO
LD
VDAref
MITSUBISHI ELECTRIC
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8-BIT 8-CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
EXPLANATION OF TERMINALS
MITSUBISHI <Dig./Ana. INTERFACE>
M62364FP
PIN No. Symbol
D I
8
Do
17
CLK
7
L D
6
RESET
19
VOUT1
2
VOUT2
3
VOUT3
10
VOUT4
11
VOUT5
14
VOUT6
15
VOUT7
22
VOUT8
23
VDD
5
Function
Serial data input
Serial data output
Shift clock input. Input data of DI are taken into the 12-bit shift register
on a rising edge of the clock.
A low state enables data loading to the 12-bit shift register.
During a rising edge of LD, the data will be loaded to the output register.
Reset 8-bit latches
D/A Converter Output with 8-bit resolution
Power Supply
20
12
13
16
21
24
18
GND
VIN1
1
VIN2
4
VIN3
9
VIN4
VIN5
VIN6
VIN7
VIN8
VDAref
Ground
D/A Converter Input
D-A Converter Reference Voltage Input
MITSUBISHI ELECTRIC
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DIGITAL FORMAT
•12BIT SERIAL DATA
DATA
CLK
•DATA ASSIGNMENT
MITSUBISHI <Dig./Ana. INTERFACE>
M62364FP
8-BIT 8-CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
(LSB)
123456789101112
D11 D10D9D8D7D6D5D4D3D2D1D0
(LSB)
D9D10 D11D8
Dac Select Data
D8D9D10D11
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
Don't Care
0
1
VOUT1Selection
0
VOUT2Selection
1
VOUT3Selection
0
VOUT4Selection
1
VOUT5Selection
VOUT6Selection
0
1
VOUT7Selection
0
VOUT8Selection
Don't Care
1
0
Don't Care
1
Don't Care
0
Don't Care
1
Don't Care
0
Don't Care
1
Don't Care
D7D6D5D4D3D2D1D0
(MSB)
:DAC SELECT DATA
Dac Selection
:DAC DATA
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•Digital Data Format
D0
D1D2D3D4D5D6D7
0
0
0
1
0
0
0
1
0
1
1
00
MITSUBISHI <Dig./Ana. INTERFACE>
M62364FP
8-BIT 8-CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
DAC OUTPUT
00
0
0
0
0
00
00
0
0
0
0
00
0
0
0
(VIN-VDAref)/256 x 1+VDAref
(VIN-VDAref)/256 x 2+VDAref
(VIN-VDAref)/256 x 3+VDAref
VDAref
TIMING CHART
R
DI
CLK
LD
1
1
111111
MSB
D11
D10D9D0
(VIN-VDAref)/256 x 255+VDAref
LSB
Vo
* Input data carried out LD signal Low besides CLK signal positive edge.
CLK,LD is keep generally HIGH level.
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ABSOLUTE MAXIMUM RATING
MITSUBISHI <Dig./Ana. INTERFACE>
M62364FP
8-BIT 8-CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
SYMBOL
VDD
VIND
VIN
VOUT
VDAref
Topr
Tstg
PARAMETER
Supply Voltage
Digital Input Voltage
Analog Input Voltage
Analog Output Voltage
D-A Reference Voltage
Operating Temperature
Storage Temperature
MEASUREMENT CONDITION
RATINGS
-0.3 ~ +7.0
-0.3 ~ +7.0
-0.3 ~ VDD+0.3
-0.3 ~ VDD+0.3
-0.3 ~ VDD+0.3
-20 ~ +75
-40 ~ +125
ELECTRICAL CHARACTERISTICS
<Ana/Dig Common Part> (VDD=5V±10%,VDD≥VIN,GND,VDAref=0V,Ta=-20~85°C unless otherwise noted)
LD Set Up Time
LD Hold Time
LD "H" Pulse Duration Time
Data Output Delay Time
D-A Output Setting Time
MINTYPMAX
200
200
100
200
100
100
CL=100pF
CL≤100pF,VAO:0.1<=>2.6V
This Time Until The Output Becomes
The final Value Of 1/2 LSB
200
350
300
UNITMEASUREMENT CONDITION
nS
nS
nS
nS
nS
nS
nS
nS
nS
µS
TIMING CHART
CLK
DI
LD
D-A OUTPUT
DO OUTPUT
tCRtCKH
tCKL
tDCH
tCHD
tCF
tLDC
tLDH
tCHL
tLDD
tDo
Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable,but
!
there is always the possibility that trouble may occur with them.Trouble with semiconductors may lead to personal injury,
fire or property damage.Remember to give due consideration to safety when making your circuit design,in order to
prevent fires from spreading,redundancy,malfunction or other mishap.
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MITSUBISHI ELECTRIC
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