AD5162BRM50 Analog Devices Inc, AD5162BRM50 Datasheet

IC,Digital Potentiometer,CMOS,TSSOP,10PIN,PLASTIC

AD5162BRM50

Manufacturer Part Number
AD5162BRM50
Description
IC,Digital Potentiometer,CMOS,TSSOP,10PIN,PLASTIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5162BRM50

Rohs Status
RoHS non-compliant
Taps
256
Resistance (ohms)
50K
Number Of Circuits
2
Temperature Coefficient
35 ppm/°C Typical
Memory Type
Volatile
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Resistance In Ohms
50K
For Use With
AD5162EVAL - BOARD EVAL FOR AD5162
Lead Free Status / RoHS Status

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD5162BRM50
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
2-channel, 256-position potentiometer
End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ
Compact 10-lead MSOP (3 mm × 4.9 mm) package
Fast settling time: t
Full read/write of wiper register
Power-on preset to midscale
Computer software replaces microcontroller in factory
Single supply: 2.7 V to 5.5 V
Low temperature coefficient: 35 ppm/°C
Low power: I
Wide operating temperature: −40°C to +125°C
Evaluation board available
Qualified for automotive applications
APPLICATIONS
Systems calibrations
Electronics level settings
Mechanical trimmers replacement in new designs
Permanent factory PCB setting
Transducer adjustment of pressure, temperature, position,
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
GENERAL DESCRIPTION
The AD5162 provides a compact 3 mm × 4.9 mm packaged
solution for dual, 256-position adjustment applications. This
device performs the same electronic adjustment function as a
3-terminal mechanical potentiometer. Available in four end-to-
end resistance values (2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), this low
temperature coefficient device is ideal for high accuracy and
stability-variable resistance adjustments. The wiper settings are
controllable through an SPI digital interface. The resistance
between the wiper and either endpoint of the fixed resistor
varies linearly with respect to the digital code transferred into
the RDAC latch.
1
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
The terms digital potentiometer, VR, and RDAC are used interchangeably.
programming applications
chemical, and optical sensors
DD
= 6 µA maximum
1
S
= 5 µs typical on power-up
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Operating from a 2.7 V to 5.5 V power supply and consuming
less than 6 µA allows the AD5162 to be used in portable battery-
operated applications.
For applications that program the AD5162 at the factory,
Analog Devices offers device programming software running
on Windows® NT/2000/XP operating systems. This software
effectively replaces the need for external SPI controllers, which
in turn enhances the time to market of systems. An AD5162
evaluation kit and software are available. The kit includes a
cable and instruction manual.
GND
CLK
V
SDI
CS
DD
FUNCTIONAL BLOCK DIAGRAM
Dual, 256-Position, SPI
A1
Digital Potentiometer
©2003–2010 Analog Devices, Inc. All rights reserved.
REGISTER 1
A = 0
WIPER
W1
SPI INTERFACE
Figure 1.
B1
REGISTER 2
A = 1
WIPER
W2
AD5162
AD5162
B2
www.analog.com

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AD5162BRM50 Summary of contents

Page 1

FEATURES 2-channel, 256-position potentiometer End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ Compact 10-lead MSOP (3 mm × 4.9 mm) package Fast settling time µs typical on power-up S Full read/write of wiper register ...

Page 2

AD5162 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics: 2.5 kΩ Version ................................. 3 Electrical Characteristics: 10 kΩ, 50 kΩ, and ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS: 2.5 kΩ VERSION ± 10 ± 10 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE Resistor Differential Nonlinearity 2 2 Resistor Integral Nonlinearity Nominal Resistor Tolerance 3 ...

Page 4

AD5162 ELECTRICAL CHARACTERISTICS: 10 kΩ, 50 kΩ, AND 100 kΩ VERSIONS ± 10 ± 10 Table 2. Parameter DC CHARACTERISTICS—RHEOSTAT MODE 2 Resistor Differential Nonlinearity 2 Resistor Integral ...

Page 5

TIMING CHARACTERISTICS: ALL VERSIONS ± 10 ± 10 Table 3. Parameter SPI INTERFACE TIMING CHARACTERISTICS Clock Frequency Input Clock Pulse Width Data Setup Time Data Hold Time CS ...

Page 6

AD5162 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter V to GND GND Terminal Current Bx Wx Pulsed ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description Terminal Terminal Terminal. 4 GND Digital Ground Positive Power Supply CLK Serial Clock ...

Page 8

AD5162 TYPICAL PERFORMANCE CHARACTERISTICS 2.0 1.5 1 2. 5.5V DD –0.5 –1.0 –1.5 –2 128 160 CODE (DECIMAL) Figure 3. R-INL vs. Code vs. Supply Voltages 0.5 0.4 0.3 ...

Page 9

–40°C, +25°C, +85°C, +125°C A 1.0 0 5.5V DD –0 –40°C, +25°C, +85°C, +125°C A –1.0 –1.5 –2 128 160 192 CODE (DECIMAL) ...

Page 10

AD5162 2. –40°C TO +85°C, –40°C TO +125° – 5. –40°C TO +85°C, –40°C TO +125°C A –20 – ...

Page 11

V = 5. 2.7V DD 0.01 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 DIGITAL INPUT VOLTAGE (V) Figure 21. Supply Current vs. Digital Input Voltage V W CLK Figure 22. Digital Feedthrough V ...

Page 12

AD5162 TEST CIRCUITS Figure 27 through Figure 32 illustrate the test circuits that define the test conditions used in the product specification tables (see Table 1 and Table 2 DUT 1LSB = V+/ ...

Page 13

THEORY OF OPERATION The AD5162 is a 256-position, digitally controlled variable resistor (VR) device. An internal power-on preset places the wiper at midscale during power-on, which simplifies the fault condition recovery at power-up. PROGRAMMING THE VARIABLE RESISTOR AND VOLTAGE Rheostat ...

Page 14

AD5162 PROGRAMMING THE POTENTIOMETER DIVIDER Voltage Output Operation The digital potentiometer easily generates a voltage divider at wiper to B and wiper to A, proportional to the input voltage Unlike the polarity GND, ...

Page 15

LAYOUT AND POWER SUPPLY BYPASSING It is good practice to employ compact, minimum lead length layout design. The leads to the inputs should be as direct as possible with a minimum conductor length. Ground paths should have low resistance and ...

Page 16

AD5162 SPI INTERFACE SPI-COMPATIBLE, 3-WIRE SERIAL BUS The AD5162 contains a 3-wire, SPI-compatible digital interface (SDI and CLK). The 9-bit serial word must be loaded MSB first. The format of the word is shown in Table 8. The ...

Page 17

... OUTLINE DIMENSIONS IDENTIFIER ORDERING GUIDE Model (kΩ) AB AD5162BRM2.5 2.5 AD5162BRM2.5-RL7 2.5 AD5162BRM10 10 AD5162BRM50 50 AD5162BRM50-RL7 50 AD5162BRM100 100 AD5162BRM100-RL7 100 AD5162BRMZ2.5 2.5 AD5162BRMZ2.5-RL7 2.5 AD5162BRMZ10 10 AD5162BRMZ10-RL7 10 AD5162BRMZ50 50 AD5162BRMZ50-RL7 50 AD5162BRMZ100 100 AD5162BRMZ100-RL7 100 AD5162WBRMZ100-RL7 100 AD5162EVAL RoHS Compliant Part Qualified for Automotive Applications. 3 The evaluation board is shipped with the 10 k Ω R ...

Page 18

AD5162 NOTES Rev Page ...

Page 19

NOTES Rev Page AD5162 ...

Page 20

AD5162 NOTES ©2003–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04108-0-12/10(C) Rev Page ...

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