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MITSUBISHI <STD. LINEAR ICs>
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M62334P/FP
M62339P/FP
8-BIT 4CH I2C BU S D -A CONVERTER WITH BUFFER A MPLIFIER
DESCRIPTION
The M62334/M62339 is an integrated circui
semiconductor of CMOS structure with 4 channels of built
in D-A converters with output buffer operational amplifiers.
The input is 2-wires serial method is used for the transfer
format of digital data to allow connection with a
microcomputer with minimum wiring.
The output buffer operational amplifier employs AB class
output circuit with sync and source drive capacity of 1.0mA
or more,and it operates in the whole voltage range from
Vcc to ground.
The M62333 and the M62338 differ only in their slave
address.
FEATURES
• Digital data transfer format
2
I
C BUS serial data method
• Output buffer operational amplifier
it operates in the whole voltage range from Vcc to
ground.
• High output current drive capacity
±1.0mA over
APPLICATION
Conversion from digital data to analog control data fo
home-use and industrial equipment.
Signal gain control or automatic adjustment of DISPLAY-
MONITOR or CTV.
PIN CON FIGU RATION(TOP VIEW)
1
Ao1
2
Ao
3
Ao
4
Outline 8P4 (P)
M62339
8
M62334
8P2S-A (FP)
Vcc
7
SCL
6
SDA
5
GND
BLOCK DIA GRAM
Vcc
8
POWER ON
RESET
8bit Latch
8bit upper
segment R-2R
1
Ao1
SCL SDA GND
7 6 5
I2C BUS TRANSCEIVER
CHANNEL
DECODER
8
8bit Latch
8bit upper
nt R-2R
8bit Latch
8bit upper
segment R-2R
2
Ao2
3
Ao3
8bit Latch
8bit upper
segment R-2R
4
Ao4
MITSUBISHI ELECTRIC
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P
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
P
voltage
Parameter
Conditions
–0.3 to 7.0
–0.3 to Vcc+0.3
–20 to 85
–55 to 125
UnitVVVmW
°C
417 (DIP) / 272 (FP)
–0.3 to Vcc+0.3
°C
Buffer amplifier
output inpedance
867
512
SDA
SCL
Ao1
Vcc
GND
Ao2
Ao3
4
Ao4
EXPLANATION OF TERMINALS
Pin No. Symbol Function
Serial data input terminal
Serial clock input terminal
MITSUBISHI <STD. LINEAR ICs>
M62334P/F
M62339P/F
3
8-bit resolution D-A converter output terminal
Power supply terminal
GND terminal
ABSOLUTE MAXIMUM RATING
Symbol
Vcc
Vin
Vo
Pd
Topr
Tstg
Supply
Input voltage
Output voltage
Power dissipation
Operating temperature
Storage temperature
Ratings
ELECTRICAL CHARACTERISTICS (Vcc=+5V±10%,GND=0V,Ta=–20 to 85°C unless otherwise noted)
Symbol
Vcc
Icc Supply current
IILK
Parameter Test conditions
Suplly voltage
Input leak current
CLK=500kHz Operation, IAO=0µA
Data : 6Ah (at maximum current )
SDA=SCL=GND,IAO=0µA
VIN=0 to Vcc
Ratings
MIN TYP MAX
2.7 5.0 5.5
0 1.4 3.0
0 0.9 2.0
–10 10
Unit
V
mA
mA
µA
VIL
VIH
VAO
IAO
SDL
SL
SZERO
SFULL
Co
Ro
Input low voltage
Input high voltage
Buffer amplifier output
voltage range
Buffer amplifier output
drive range
Differential nonlinearity
Nonlinearity
Zero code error
Full scale error
Output capacitative load
IAO=±100µA
IAO=±500µA
Upper side saturation voltage=0.3V
Lower side saturation voltage=0.2V
VCC=5.12V(20mV/LSB)
without load (IAO=0)
MITSUBISHI ELECTRIC
0
0.8VCC
0.1
0.2 V
–1.0 1.0 mA
–1.0 1.0
–1.5 1.5
–2.0 2.0
–2.0 2.0
5.0
0.2VCC V
VCC
VCC-0.1
VCC-0.2
0.1
V
V
LSB
LSB
LSB
LSB
µF
Ω
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8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
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I2C BUS LINECHARACTERISTICS
MITSUBISHI <STD. LINEAR ICs>
M62334P/FP
M62339P/FP
fSCL
tBUF
tHD:STA
tLOW
tHIGH
tSU:STA
tHD:DAT
tSU:DAT
tR
tF
tSU:STO
ParameterSymbol
SCL clock frequency
Time the bus must be free before a new transmission can start
Hold time START Condition. After this period,the first clock pulse is generated. 4.0 - µ s
LOW period of the clock 4.7 - µ s
HIGh period of the clock 4.0 - µ s
Set-up time for START condition (Only relevant for a repeated START
condition)
Hold time DATA 0 - µ s
Set-up time DATA 250 - ns
Rise time of both SDA and SCL lines - 1000 ns
Fall time of both SDA and SCL lines - 300 ns
Set-up time for STOP condition 4.0 - µ s
Min. Max.
0 100 KHz
4.7 - µs
4.7 - µ s
• Note that a transmitter must internally provide at least a hold time to bridge the undefined region
(max.300 ns) of the falling edge of SCL.
units
TIMING CHART
VIH
SDA
VIL
tHD:STA
VIH
SCL
VIL
START START STOP
tLOW
tR, tF
tHIGH
tBUF
tHD:DATtSU:DAT
tSU:STA
tSU:STO
START
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MITSUBISHI <STD. LINEAR ICs>
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M62334P/FP
M62339P/FP
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
I2C BUS FORMAT
STA SLAVE ADDRESS W A SUB ADDRESS A DAC DATA A STP
STA: start condition
W: write(SDA=Low)
• SLAVE ADDRESS
M62334
First
1001100
• SUB ADDRESSS
First
XXX S0XXX
Don't care
• DAC DATA
First
MSB
Last
Last
S1
CHANNEL
SELECT DATA
Last
LSB
A: affirmation bit
STP: stop condition
M62339
First
1001111
CHANNEL SELECT DATA
S1
0
0
S0
0
1
01
11
Channel selection
ch1 selection
ch2 selection
ch3 selection
ch4 selection
Last
D2 D1 D0D3D4D5D6D7
First Last
MSB LSB
D7 D6 D5 D4 D3 D2 D1 D0
00000000
00000001
000000
1
0
00000011
::::::::
11111110
1111111
1
MITSUBISHI ELECTRIC
DAC output
Vcc/256 x 1
Vcc/256 x 2
Vcc/256 x 3
Vcc/256 x 4
:
Vcc/256 x 255
Vcc
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TI MING CHART (MODEL)
•start condition to slave address bite
MITSUBISHI <STD. LINEAR ICs>
M62334P/FP
M62339P/FP
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
SDA
SCL
D/A
output
start condition
•sub address bite
SDA
12A34 5
SCL
D/A
output
•DAC data bite to stop condition
SDA
12 A345678
SCL
12A3
4567W
678
D/A
output
With SCL at HIGH,SDA line goes from HIGH to LOW•Start condition
With SCL at HIGH,SDA line goes from LOW to HIGH •Stop condition
(Under normal circumstances,SDA is changed when SCL is LOW)
•Acknowledge bit The receiving IC has to pull down SDA line whenever receive slave data.
(The transmitting IC releases the SDA line just then transmit 8bit data.)
Digital Data Formats
STA SLAVE ADDRESS W A SUB ADDRESS 1 A DAC DATA 1 A
A
SUB ADDRESS n A
DAC DATA n
stop condition
A STPSUB ADDRESS 2 A DAC DATA 2
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MITSUBISHI <STD. LINEAR ICs>
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M62334P/FP
M62339P/FP
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
PRECAUTION FOR USE
Supply voltage terminal(Vcc) is also used for D-A converter upper reference
voltage setting. IF ripple or spike is input this terminal,accuracy of D-A conversion
is down. So,when use this device,please connect capacitor among Vcc to GND
for stable D-A conversion.
This IC's output amplifier has an advantage to capacitive load.So it's no problem
at device action when connect capacitor (0.1
ever
noise eliminate.
APPLICATION EXAMPLE
µ
F MAX) among output to GND for
1
Analog output
terminals
Ao1
2
Ao2
Ao3
4
Ao4
VCC
10µF 5V
5V
SCL
M
SDA
GND
Note regarding I2C BUS
• Purchase of MITSUBISHI ELECTRIC CORPORATION'S I2C components conveys a license under th
Philips I2C Patent Rights to use these components an I2C system,provided that the system comforms to I
Standard Specification as defined by Philips.
Keep safety first in your circuit designs!
• 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.
2
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