参数资料
型号: AD5172BRM2.5
厂商: Analog Devices Inc
文件页数: 13/28页
文件大小: 0K
描述: IC POT DUAL 2.5K 256POS 10-MSOP
标准包装: 50
接片: 256
电阻(欧姆): 2.5k
电路数: 2
温度系数: 标准值 35 ppm/°C
存储器类型: 非易失
接口: I²C
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
AD5172/AD5173
Data Sheet
Rev. I | Page 20 of 28
I2C INTERFACE
WRITE MODE
Table 10. AD5172 Write Mode
S
0
1
0
1
W
A A0 SD T
0 OW X
X
A D7 D6 D5 D4 D3 D2 D1 D0 A
P
Slave address byte
Instruction byte
Data byte
Table 11. AD5173 Write Mode
S
0
1
0
1
1 AD1 AD0 W
A A0 SD T
0 OW X
X
A D7 D6 D5 D4 D3 D2 D1 D0 A
P
Slave address byte
Instruction byte
Data byte
READ MODE
Table 12. AD5172 Read Mode
S
0
1
0
1
R
A D7 D6 D5 D4 D3 D2 D1 D0 A E1 E0
X
A
P
Slave address byte
Instruction byte
Data byte
Table 13. AD5173 Read Mode
S
0
1
0
1
1 AD1 AD0 R
A D7 D6 D5 D4 D3 D2 D1 D0 A E1 E0
X
A
P
Slave address byte
Instruction byte
Data byte
Table 14. SDA Bits Descriptions
Bit
Description
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 the
contents of the wiper register.
T
OTP programming bit. Logic 1 programs the wiper permanently.
OW
Overwrites the fuse setting and programs the digital potentiometer to a different setting. Upon
power-up, the digital potentiometer is preset to either midscale or fuse setting, depending on
whether the fuse link was blown.
D7, D6, D5, D4, D3, D2, D1, D0
Data bits.
E1, E0
OTP validation bits.
00 = ready to program.
10 = fatal error. Some fuses not blown. Do not retry. Discard this unit.
11 = programmed successfully. No further adjustments are possible.
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