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參數(shù)資料
| 型號： | AD5227BUJZ50-RL72 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | 64-Position Up/Down Control Digital Potentiometer |
| 中文描述： | 64工位上/下控制數(shù)字電位器 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 331K |
| 代理商： | AD5227BUJZ50-RL72 |
AD5227
CONSTANT BIAS WITH SUPPLY TO
RETAIN RESISTANCE SETTING
Users who consider EEMEM potentiometers but cannot justify
the additional cost and programming for their designs can con-
sider constantly biasing the AD5227 with the supply to retain
the resistance setting as shown in Figure 38. The AD5227 is
designed specifically with low power to allow power conservation
even in battery-operated systems. As shown in Figure 39, a
similar low power digital potentiometer is biased with a 3.4 V
450 mA/hour Li-Ion cell phone battery. The measurement shows
that the device drains negligible power. Constantly biasing the
potentiometer is a practical approach because most portable
devices do not require detachable batteries for charging. Although
the resistance setting of the AD5227 is lost when the battery
needs to be replaced, this event occurs so infrequently that the
inconvenience is minimal for most applications.
Rev. 0 | Page 14 of 16
0
V
DD
AD5227
U1
GND
V
DD
U2
GND
COMPONENT X
V
DD
U3
GND
COMPONENT Y
GND
V
DD
B
S
SW1
+
–
Figure 38. Constant Bias AD5227 for Resistance Retention
3.50
3.40
3.41
3.42
3.43
3.44
3.45
3.46
3.47
3.48
3.49
0
2
4
6
8
10
12
0
DAYS
B
T
A
= 25
°
C
Figure 39. Battery Consumption Measurement
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD5227EVAL | 64-Position Up/Down Control Digital Potentiometer |
| AD5243 | Dual 256-Position I2C Compatible Digital Potentiometer |
| AD5243BRM10 | Dual 256-Position I2C Compatible Digital Potentiometer |
| AD5243BRM100 | Dual 256-Position I2C Compatible Digital Potentiometer |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5227EVAL | 制造商:AD 制造商全稱:Analog Devices 功能描述:64-Position Up/Down Control Digital Potentiometer |
| AD5228 | 制造商:AD 制造商全稱:Analog Devices 功能描述:32-Position Manual Up/Down Control Potentiometer |
| AD5228BUJZ10 | 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 32POS 10KOHM SGL 8PIN TSOT - Bulk |
| AD5228BUJZ100 | 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 32POS 100KOHM SGL 8PIN TSOT - Bulk |
| AD5228BUJZ1002-R2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:32-Position Manual Up/Down Control Potentiometer |
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