AD5247EVAL Analog Devices Inc, AD5247EVAL Datasheet
AD5247EVAL
Specifications of AD5247EVAL
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AD5247EVAL Summary of contents
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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. ...
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AD5247 –40°C TO +85° – –40°C TO +125°C A – CODE (Decimal) Figure 16. ∆V /∆T vs. Code WB 0 0x40 –6 0x20 ...
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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) ...
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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 ...
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I C INTERFACE 2 The following abbreviations are used in this section: • start condition • stop condition • acknowledge • don’t care Table 6. Write Mode ...
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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 ...
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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 ...
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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 ...
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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 ...
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... AD5247BKSZ100-R2 100 –40°C to +125°C AD5247BKSZ100-RL7 100 –40°C to +125°C AD5247BKSZ100-1RL7 100 –40°C to +125°C AD5247BKSZ100-2RL7 100 –40°C to +125°C AD5247EVAL RoHS compliant part. 2 The evaluation board is shipped with the 10 kΩ R 2.20 2.00 1.80 2.40 1. ...
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NOTES Rev Page AD5247 ...
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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 ...