AD5247BKSZ5-RL7 Analog Devices Inc, AD5247BKSZ5-RL7 Datasheet

IC,Digital Potentiometer,TSSOP,6PIN,PLASTIC

AD5247BKSZ5-RL7

Manufacturer Part Number
AD5247BKSZ5-RL7
Description
IC,Digital Potentiometer,TSSOP,6PIN,PLASTIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5247BKSZ5-RL7

Taps
128
Resistance (ohms)
5K
Number Of Circuits
1
Temperature Coefficient
45 ppm/°C Typical
Memory Type
Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SC-70-6, SC-88, SOT-363
Resistance In Ohms
5K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AD5247EVAL - BOARD EVAL FOR AD5247
Lead Free Status / Rohs Status
Compliant
Other names
AD5247BKSZ5-RL7
AD5247BKSZ5-RL7TR

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
AD5247BKSZ5-RL7
Manufacturer:
ADI
Quantity:
1 015
Part Number:
AD5247BKSZ5-RL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
128 positions
End-to-end resistance: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Ultracompact, SC70-6 (2 mm × 2.1 mm) package
I
Full read/write of wiper register
Power-on preset to midscale
Single-supply 2.7 V to 5.5 V
Low temperature coefficient: 45 ppm/°C
Low power, I
Wide operating temperature range: −40°C to +125°C
Available in Pb–free package
Evaluation board available
APPLICATIONS
Mechanical potentiometer replacement in new designs
Transducer adjustment of pressure, temperature, position,
RF amplifier-biasing
LCD brightness and contrast adjustment
Automotive electronics adjustment
Gain control and offset adjustment
GENERAL DESCRIPTION
The AD5247 provides a compact, 2 mm × 2.1 mm, packaged
solution for 128-position adjustment applications. This device
performs the same electronic adjustment function as a mechanical
potentiometer or a variable resistor. Available in four different
end-to-end resistance values (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ),
these low temperature coefficient devices are ideal for high
accuracy and stability variable resistance adjustments.
The wiper settings are controllable through the I
digital interface, which can also be used to read back the present
wiper register control word. The 10 k Ω and 100 kΩ options each
Rev. E
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.
2
C-compatible interface
chemical, and optical sensors
DD
= 3 µA typical
2
C-compatible
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
have three hard-coded slave address options available to allow
users access to three of these devices on one I
for a full list of slave address locations).
The resistance between the wiper and either end point of
the fixed resistor varies linearly with respect to the digital
code transferred into the RDAC latch. Note the terms digital
potentiometer, VR (variable resistor), and RDAC are used
interchangeably in this document.
Operating from a 2.7 V to 5.5 V power supply and consuming
3 µA allows the AD5247 to be used in portable battery-operated
applications.
128-Position I
SDA
SCL
FUNCTIONAL BLOCK DIAGRAM
I
Digital Potentiometer
©2003–2011 Analog Devices, Inc. All rights reserved.
2
C INTERFACE
REGISTER
WIPER
GND
Figure 1.
V
DD
2
C-Compatible
B
2
C bus (see Table 8
AD5247
www.analog.com
A
W

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AD5247BKSZ5-RL7 Summary of contents

Page 1

FEATURES 128 positions End-to-end resistance: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Ultracompact, SC70 × 2.1 mm) package I 2 C-compatible interface Full read/write of wiper register Power-on preset to midscale Single-supply 2 5.5 V ...

Page 2

AD5247 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics—5 kΩ Version .................................. 3 Electrical Characteristics—10 kΩ, 50 kΩ, and 100 kΩ ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS—5 kΩ VERSION ± 10 ± 10 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity 2 Nominal Resistor Tolerance 3 ...

Page 4

AD5247 ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, AND 100 kΩ VERSIONS ± 10 ± 10 Table 2. Parameter DC CHARACTERISTICS—RHEOSTAT MODE Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity ...

Page 5

Guaranteed by design, not subject to production test calculated from (I × CMOS logic level inputs result in minimum power dissipation. 7 DISS All dynamic characteristics use ...

Page 6

AD5247 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter V to GND GND A W Terminal Current Bx Wx Pulsed 1 Continuous Digital ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic GND 3 SCL 4 SDA AD5247 GND W 2 TOP VIEW 5 (Not to ...

Page 8

AD5247 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.8 0 2.7V DD 0.4 0 5.5V DD –0.2 –0.4 –0.6 –0.8 –1 CODE (Decimal) Figure 4. R-INL vs. Code vs. Supply Voltages 0.5 0.4 ...

Page 9

T = –40° +85°C A 0.6 0.4 0 +25° +125°C A –0.2 –0.4 –0.6 –0.8 –1 CODE (Decimal) Figure 10. R-INL vs. ...

Page 10

AD5247 –40°C TO +85° – –40°C TO +125°C A – CODE (Decimal) Figure 16. ∆V /∆T vs. Code WB 0 0x40 –6 0x20 ...

Page 11

A-V = 5.5V DD CODE = 0x55 0.25 B-V = 5.5V DD CODE = 0x7F 0.20 C-V = 2.7V DD CODE = 0x55 0.15 D-V = 2.7V DD CODE = 0x7F 0.10 0. 10k 100k FREQUENCY (Hz) ...

Page 12

AD5247 TEST CIRCUITS Figure 27 to Figure 32 define the test conditions used in the Specifications section. DUT 1LSB = V+/ Figure 27. Potentiometer Divider Nonlinearity Error (INL, DNL) NO CONNECT ...

Page 13

... Slave Address Byte 1 SCL A6 A5 SDA START BY SLAVE ADDRESS BYTE MASTER 1 SCL START BY SLAVE ADDRESS BYTE MASTER Table Slave Addresses Slave Addresses Model AD5247BKS5- AD5247BKS5-RL7 AD5247BKSZ5-RL7 AD5247BKS10- AD5247BKS10-RL7 AD5247BKSZ10-RL7 AD5247BKSZ10-1RL7 AD5247BKSZ10-2RL7 AD5247BKS50- • write • read • A6, A5, A4, A3, A2, A1 address bits • ...

Page 14

AD5247 THEORY OF OPERATION The AD5247 is a 128-position, digitally-controlled variable resistor (VR) device. An internal power-on preset places the wiper at midscale during power-on, which simplifies the default condition recovery at power-up. PROGRAMMING THE VARIABLE RESISTOR Rheostat Operation The ...

Page 15

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 at A-to-B. Unlike the polarity GND, which must be DD positive, voltage across ...

Page 16

AD5247 LEVEL SHIFTING FOR BIDIRECTIONAL INTERFACE While most legacy systems can be operated at one voltage, a new component can be optimized at another voltage. When two systems operate the same signal at two different voltages, proper level shifting is ...

Page 17

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

Page 18

... AD5247 OUTLINE DIMENSIONS 0.10 MAX COPLANARITY 0.10 ORDERING GUIDE 1 Model R (kΩ) Temperature Range AB AD5247BKSZ5-RL7 5 –40°C to +125°C AD5247BKSZ10-RL7 10 –40°C to +125°C AD5247BKSZ10-1RL7 10 –40°C to +125°C AD5247BKSZ10-2RL7 10 –40°C to +125°C AD5247BKSZ50-RL7 50 –40°C to +125°C AD5247BKSZ100-R2 100 – ...

Page 19

NOTES Rev Page AD5247 ...

Page 20

AD5247 NOTES I C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). 2 ©2003–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03876-0-1/11(E) Rev ...

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