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| 型號： | EVAL-AD5263EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL AD5263 |
| 標準包裝： | 1 |
| 主要目的： | 數(shù)字電位器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | AD5263 |
| 主要屬性： | 4 通道，256 位置 |
| 次要屬性： | I²C & SPI 接口 |
| 已供物品： | 板 |
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Quad, 15 V, 256-Position, Digital
Potentiometer with Pin-Selectable SPI/I2C
Data Sheet
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
2003–2012 Analog Devices, Inc. All rights reserved.
FEATURES
256-position, 4-channel
End-to-end resistance 20 k, 50 k, 200 k
Pin-selectable SPI- or I2C-compatible interface
Power-on preset to midscale
Two package address decode pins AD0 and AD1
Rheostat mode temperature coefficient 30 ppm/°C
Voltage divider temperature coefficient 5 ppm/°C
Wide operating temperature range –40°C to +125°C
10 V to 15 V single supply; ±5 V dual supply
APPLICATIONS
Mechanical potentiometer replacement
Optical network adjustment
Instrumentation: gain, offset adjustment
Stereo channel audio level control
Automotive electronics adjustment
Programmable power supply
Programmable filters, delays, time constants
Line impedance matching
Low resolution DAC/trimmer replacement
Base station power amp biasing
Sensor calibration
FUNCTIONAL BLOCK DIAGRAM
03142-
001
SERIAL INPUT
REGISTER
AD5263
ADDRESS
DECODER
SPI/I2C
SELECT
LOGIC
GND
A1
W1
B1 A2
W2
B2 A3
W3
B3 A4
W4
B4
CS/AD0
SDI/SDA
CLK/SCL
VL
VDD
VSS
SHDN
RES/AD1
DIS
NC/O2
SDO/O1
RDAC 1
REGISTER
RDAC 2
REGISTER
RDAC 3
REGISTER
RDAC 4
REGISTER
8
Figure 1.
GENERAL DESCRIPTION
The AD5263 is the industry’s first quad-channel, 256-position,
digital potentiometer1 with a selectable digital interface. This
device performs the same electronic adjustment function as
mechanical potentiometers or variable resistors, with enhanced
resolution, solid-state reliability, and superior low temperature
coefficient performance.
Each channel of the AD5263 offers a completely programmable
value of resistance between the A terminal and the wiper or
between the B terminal and the wiper. The fixed A-to-B
terminal resistance of 20 k, 50 k, or 200 k has a nominal
temperature coefficient of ±30 ppm/°C and a ±1% channel-to-
channel matching tolerance. Another key feature of this part is
the ability to operate from +4.5 V to +15 V, or at ±5 V.
Wiper position programming presets to midscale upon power-
on. Once powered, the VR wiper position is programmed by
either the 3-wire SPI or 2-wire I2C-compatible interface. In the
I2C mode, additional programmable logic outputs enable users
to drive digital loads, logic gates, and analog switches in their
systems.
The AD5263 is available in a narrow body, 24-lead TSSOP.
All parts are guaranteed to operate over the automotive
temperature range of –40°C to +125°C.
For single- or dual-channel applications, refer to the
1 The terms digital potentiometer, VR, and RDAC are used interchangeably.
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