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| 型號： | AD5172BRM10 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DUAL 10K 256POS 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 接片： | 256 |
| 電阻（歐姆）： | 10k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 35 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | I²C |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 管件 |
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256-Position, One-Time Programmable,
Dual-Channel, I2C Digital Potentiometers
Data Sheet
Rev. I
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2003–2013 Analog Devices, Inc. All rights reserved.
FEATURES
2-channel, 256-position potentiometers
One-time programmable (OTP) set-and-forget resistance
setting provides a low cost alternative to EEMEM
Unlimited adjustments prior to OTP activation
OTP overwrite allows dynamic adjustments with user-
defined preset
End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ
Compact 10-lead MSOP: 3 mm × 4.9 mm
Fast settling time: tS = 5 μs typical on power-up
Full read/write of wiper register
Power-on preset to midscale
Extra package address decode pins: AD0 and AD1 (AD5173 )
Single supply: 2.7 V to 5.5 V
Low temperature coefficient: 35 ppm/°C
Low power: IDD = 6 μA maximum
Wide operating temperature: 40°C to +125°C
APPLICATIONS
Systems calibration
Electronics level setting
Mechanical trimmers replacement in new designs
Permanent factory PCB setting
Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
FUNCTIONAL BLOCK DIAGRAMS
A1
VDD
GND
SDA
SCL
W1
RDAC
REGISTER 1
SERIAL INPUT
REGISTER
B1
A2
W2
RDAC
REGISTER 2
B2
FUSE
LINKS
12
/
8
0
41
03
-00
1
Figure 1. AD5172 Functional Block Diagram
VDD
GND
SDA
SCL
AD0
AD1
W1
RDAC
REGISTER 1
ADDRESS
DECODE
SERIAL INPUT
REGISTER
B1
W2
RDAC
REGISTER 2
B2
FUSE
LINKS
12
/ 8
04
10
3-
00
2
Figure 2. AD5173 Functional Block Diagram
GENERAL DESCRIPTION
The AD5172/AD5173 are dual-channel, 256-position, one-time
programmable (OTP) digital potentiometers1 that employ fuse
link technology to achieve memory retention of resistance
settings. OTP is a cost-effective alternative to EEMEM for users
who do not need to program the digital potentiometer setting
in memory more than once. These devices perform the same
electronic adjustment function as mechanical potentiometers or
variable resistors but with enhanced resolution, solid-state reliabil-
ity, and superior low temperature coefficient performance.
compatible digital interface. Unlimited adjustments are allowed
before permanently setting the resistance value. During OTP
activation, a permanent blow fuse command freezes the wiper
position (analogous to placing epoxy on a mechanical trimmer).
Unlike traditional OTP digital potentiometers, the AD5172/
AD5173 have a unique temporary OTP overwrite feature that
allows for new adjustments even after a fuse is blown. However,
the OTP setting is restored during subsequent power-up condi-
tions. This allows users to treat these digital potentiometers as
volatile potentiometers with a programmable preset.
1 The terms digital potentiometer, VR, and RDAC are used interchangeably.
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