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參數(shù)資料
| 型號： | AD5172BRM2.5-RL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | DUAL 2.5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10 |
| 封裝： | 3 X 4.90 MM, MO-187BA, MSOP-10 |
| 文件頁數(shù)： | 18/24頁 |
| 文件大?。?/td> | 948K |
| 代理商： | AD5172BRM2.5-RL7 |
AD5172/AD5173
I
2
C INTERFACE
Table 7. Write Mode
AD5172
Rev. A | Page 18 of 24
S
0
1
0
1
1
1
1
W
A
A0 SD
T
Instruction Byte
0 OW
X
X
X
A
D7 D6 D5 D4 D3 D2 D1 D0
Data Byte
A
P
Slave Address Byte
AD5173
S
0
1
0
1
1 AD1 AD0 W
A A0 SD
T
Instruction Byte
0 OW
X
X
X
A D7 D6 D5 D4 D3 D2 D1 D0
Data Byte
A
P
Slave Address Byte
Table 8. Read Mode
AD5172
S
0
1
0
1
1
1
1
R
A D7 D6 D5 D4 D3 D2 D1 D0
Instruction Byte
A
E1
E0
X
X
X
X
X
X
A
P
Slave Address Byte
Data Byte
AD5173
S
0
1
0
1
1 AD1 AD0 R
A D7 D6 D5 D4 D3 D2 D1 D0
Instruction Byte
A
E1
E0
X
X
X
X
X
X
A
P
Slave Address Byte
Data Byte
S = Start Condition
P = Stop Condition
A = Acknowledge
AD0, AD1 = Package Pin Programmable Address Bits
X = Don’t Care
W = Write
R = Read
A0 = RDAC Subaddress Select Bit
SD = Shutdown connects wiper to B terminal and open circuits
the A terminal. It does not change contents of wiper register.
T = OTP Programming Bit. Logic 1 programs the wiper
permanently.
OW = Overwrite the fuse setting and program the digital
potentiometer to a different setting. Note that upon power-up,
the digital potentiometer is preset to either midscale or fuse
setting, depending on whether not the fuse link has been blown.
D7, D6, D5, D4, D3, D2, D1, D0 = Data Bits.
E1, E0 = OTP Validation Bits.
0, 0 = Ready to Program.
1, 0 = Fatal Error. Some fuses not blown. Do not retry. Discard
this unit.
1, 1 = Programmed Successfully. No further adjustments
possible.
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