EVAL-AD5247DBZ Analog Devices, EVAL-AD5247DBZ Datasheet
EVAL-AD5247DBZ
Specifications of EVAL-AD5247DBZ
Related parts for EVAL-AD5247DBZ
EVAL-AD5247DBZ Summary of contents
Page 1
... Rev. F 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. ...
Page 2
... DD Changes to I Parameters, Table 2 ................................................ 4 DD Changes to Figure 15 ........................................................................ 9 Changes to Figure 16 ...................................................................... 10 Removed Evaluation Board Section ............................................. 17 Changes to Ordering Guide .......................................................... 18 1/11—Rev Rev. E Change to Table 1, Added Output Logic Low .............................. 3 Change to Table 2, Added Output Logic Low .............................. 4 3/10—Rev Rev. D Changes to Table 9 and Table 10 ................................................... 14 10/09— ...
Page 3
Data Sheet SPECIFICATIONS ELECTRICAL CHARACTERISTICS—5 kΩ VERSION ± 10 ± 10 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE 2 Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity 3 Nominal ...
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
Data Sheet Parameter DYNAMIC CHARACTERISTICS 6, 8 Bandwidth –3 dB Total Harmonic Distortion V Settling Time (10 kΩ/50 kΩ/100 kΩ) W Resistor Noise Voltage Density 1 Typical specifications represent average readings at 25°C and V 2 Resistor position nonlinearity error ...
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
Data Sheet 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 ...
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
Data Sheet 1.0 0 –40° +85°C A 0.6 0.4 0 +25° –0.2 –0.4 –0.6 –0.8 –1 CODE (Decimal) Figure 10. R-INL vs. Code vs. Temperature 0.5 ...
Page 10
AD5247 100 –20 –40 –60 –80 –100 100 109 118 127 CODE (Decimal) Figure 16. ∆V /∆T vs. Code WB 0 0x40 –6 0x20 ...
Page 11
Data Sheet 0.30 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 FREQUENCY ...
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
Data Sheet I C INTERFACE 2 The following abbreviations are used in this section: • start condition • stop condition • acknowledge • don’t care Table 6. Write Mode ...
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
Data Sheet 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, ...
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
Data Sheet 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 ...
Page 18
... 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 EVAL-AD5247DBZ RoHS compliant part. 2 The evaluation board is shipped with the 10 kΩ R 2.20 2.00 1.80 2.40 1. ...
Page 19
Data Sheet NOTES Rev Page AD5247 ...
Page 20
... AD5247 NOTES I C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). 2 ©2003–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03876-0-5/12(F) Rev Page Data Sheet ...