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參數(shù)資料
| 型號(hào)： | AD5272BRMZ-50-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RHEOSTAT 5V 50-TP 1024 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 接片： | 1024 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 5 ppm/°C |
| 存儲(chǔ)器類型： | 非易失 |
| 接口： | I²C |
| 電源電壓： | 2.7 V ~ 5.5 V，±2.5 V ~ 2.75 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： | 帶卷 (TR) |
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1024-/256-Position, 1% Resistor Tolerance Error,
I2C Interface and 50-TP Memory Digital Rheostat
Data Sheet
Rev. D
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
2009–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Single-channel, 1024-/256-position resolution
20 kΩ, 50 kΩ, 100 kΩ nominal resistance
Maximum ±1% nominal resistor tolerance error
50-times programmable (50-TP) wiper memory
Rheostat mode temperature coefficient: 5 ppm/°C
2.7 V to 5.5 V single-supply operation
±2.5 V to ±2.75 V dual-supply operation for ac or bipolar
operations
I2C-compatible interface
Wiper setting readback
Power on refreshed from 50-TP memory
Thin LFCSP 10-lead, 3 mm × 3 mm × 0.8 mm package
Compact MSOP, 10-lead 3 mm × 4.9 mm × 1.1 mm package
APPLICATIONS
Mechanical rheostat replacements
Op-amp: variable gain control
Instrumentation: gain, offset adjustment
Programmable voltage to current conversions
Programmable filters, delays, time constants
Programmable power supply
Sensor calibration
FUNCTIONAL BLOCK DIAGRAM
10/8
VDD
A
W
AD5272/AD5274
SCL
ADDR
SDA
I2C
SERIAL
INTERFACE
POWER-ON
RESET
RDAC
REGISTER
50-TP
MEMORY
BLOCK
RESET
VSS
EXT_CAP
GND
08
07
6-
00
1
Figure 1.
GENERAL DESCRIPTION
The AD5272/AD52741 are single-channel, 1024-/256-position
digital rheostats that combine industry leading variable resistor
performance with nonvolatile memory (NVM) in a compact
package.
The AD5272/AD5274 ensure less than 1% end-to-end resistor
tolerance error and offer 50-times programmable (50-TP) memory.
The guaranteed industry leading low resistor tolerance error
feature simplifies open-loop applications as well as precision
calibration and tolerance matching applications.
The AD5272/AD5274 device wiper settings are controllable
through the I2C-compatible digital interface. Unlimited
adjustments are allowed before programming the resistance
value into the 50-TP memory. The AD5272/AD5274 do not
require any external voltage supply to facilitate fuse blow and
there are 50 opportunities for permanent programming. During
50-TP activation, a permanent blow fuse command freezes the
wiper position (analogous to placing epoxy on a mechanical
trimmer).
The AD5272/AD5274 are available in a 3 mm × 3 mm 10-lead
LFCSP package and in a 10-lead MSOP package. The parts are
guaranteed to operate over the extended industrial temperature
range of 40°C to +125°C.
1 Protected by U.S. Patent Number 7688240.
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