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參數(shù)資料
| 型號： | MAX520 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs(四通道,串行,電壓輸出,8位DAC) |
| 中文描述： | 四/八通道、2線串行8位DAC，滿擺幅輸出 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大小： | 337K |
| 代理商： | MAX520 |
M
Quad/Oc tal, 2-Wire S erial 8-Bit DACs
with Rail-to-Rail Outputs
12
______________________________________________________________________________________
( )
DAC 2 GOES TOHALF SCALE.
( )
SET TOHALF SCALE
SDA
SDA
0
START
CONDITION
ADDRESS BYTE
ACK
ACK
1
0
1
AD1 AD0 0
0
0
0
0
0
0
0
0 0 0
1
1
1
1
1
1
1 1
0 0
1
0
0
0
0 0
0
0
0
0
0
0
0 0
0
0 1
0
0
0
0
0
0
0 0
0
1
1
1
1
1
1
1
1
1
STOP
CONDITION
OUTPUT BYTE
(FULL SCALE)
COMMAND BYTE
(ADDRESSING DAC0)
ACK
OUTPUT BYTE
(FULL SCALE)
ACK
COMMAND BYTE
(ADDRESSING DAC2)
ACK
OUTPUT BYTE
(HALF SCALE)
DAC2 INPUT LATCH
ACK
COMMAND BYTE
(ADDRESSING DAC1)
ACK
DAC OUTPUTS CHANGE HERE:
DACS 0 AND 1 GOTOFULL SCALE,
DAC0 INPUT LATCH
SET TOFULL SCALE
( )
( )
SET TOFULL SCALE
DAC1 INPUT LATCH
0 OR AD2
Figure 7. Setting DAC Outputs
SDA
0
START
CONDITION
ADDRESS BYTE
ACK
1
0
1
AD1 AD0 0
0
0
0 0 0 0 1
(PD)
(PD)
1
STOP
CONDITION
COMMAND BYTE
ACK
DEVICE ENTERS
POWER-DOWN STATE
( )
SDA
0
START
CONDITION
ADDRESS BYTE
ACK
1
0
1
AD1 AD0 0 0
0
0
0
0
0
0
0 0 0
1
1
1
1
1
1
1
1
STOP
COMMAND BYTE
(ADDRESSING DAC0)
ACK
OUTPUT BYTE
(FULL SCALE)
DAC 0 INPUT LATCH
SET TOFULL SCALE
ACK
(a)
(b)
DEVICE ENTERS POWER-DOWN STATE.
DAC 0 OUTPUT LATCH SET TOFULL SCALE.
NOTE: X = DONT CARE
X X X
( )( )
0 OR AD2
0 OR AD2
Figure 8. Entering the Power-Down State
( )
LATCH SET TO0
SDA
0
START
CONDITION
ADDRESS BYTE
ACK
1
0
1
AD1 AD0 0
0
0
0 0 0 0 0
(PD)
(PD)
0
STOP
CONDITION
COMMAND BYTE
ACK
NORMAL OPERATION
( )
DAC3 OUTPUT
SDA
0
START
CONDITION
ADDRESS BYTE
ACK
1
0
1
AD1 AD0 0
0
0
0
0
0
0 1 1
0
0
0
0
0
0
0
0
0
0
STOP
CONDITION
( )
COMMAND BYTE
(ADDRESSING DAC3)
ACK
OUTPUT BYTE
(SET TO0)
ACK
(a)
(b)
DAC 3 SET TO0.
NOTE: X = DONT CARE
X X X
0 OR AD2
0 OR AD2
Figure 9. Returning to Normal Operation from Power-Down
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