AD5245BRJ100-R2 Analog Devices Inc, AD5245BRJ100-R2 Datasheet
AD5245BRJ100-R2
Specifications of AD5245BRJ100-R2
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AD5245BRJ100-R2 Summary of contents
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FEATURES 256-position End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Compact SOT-23-8 (2.9 mm × 3 mm) package Fast settling time µs typ on power-up S Full read/write of wiper register Power-on preset to midscale ...
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AD5245 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 Pin Configuration............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Electrical Characteristics ................................................................. 3 5 kΩ Version.................................................................................. 3 10 kΩ, 50 kΩ, 100 kΩ Versions ...
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ELECTRICAL CHARACTERISTICS 5 kΩ VERSION ± 10 ± 10 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE 2 Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity 3 Nominal Resistor Tolerance ...
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AD5245 10 kΩ, 50 kΩ, 100 kΩ VERSIONS ± 10 ± 10 Table 2. Parameter DC CHARACTERISTICS—RHEOSTAT MODE 2 Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity 3 ...
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TIMING CHARACTERISTICS 5 KΩ, 10 KΩ, 50 KΩ, 100 KΩ VERSIONS ± 10 ± 10 Table 3. Parameter INTERFACE TIMING CHARACTERISTICS SCL Clock Frequency ...
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AD5245 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter V to GND GND Terminal Current ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description Terminal. GND ≤ Positive Power Supply GND Digital Ground. 4 SCL Serial Clock Input. Positive edge triggered. Pull-up ...
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AD5245 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1 128 CODE (Decimal) Figure 4. R-INL vs. Code vs. Supply Voltages 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 ...
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CODE (Decimal) Figure 10. R-INL vs. Code vs. Temperature, V 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 ...
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AD5245 200 150 100 50 0 – 128 CODE (Decimal) Figure 16. Rheostat Mode Tempco ∆R 160 140 120 100 – 128 CODE (Decimal) Figure 17. Potentiometer ...
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REF LEVEL /DIV –5.000dB 0.500dB –5.5 –6.0 –6.5 –7.0 –7.5 –8.0 –8 50kΩ –9 10kΩ 100kΩ –9.5 –10.0 –10.5 10k 100k 1M START 1 000.000Hz STOP 1 000 000.000Hz Figure 22. –3 ...
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AD5245 TEST CIRCUITS Figure 28 to Figure 34 illustrate the test circuits that define the test conditions used in the product specification tables (Table 1 through Table 3). DUT Figure 28. Test Circuit for Potentiometer Divider ...
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THEORY OF OPERATION The AD5245 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 Rheostat Operation The ...
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AD5245 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, which must be DD ...
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CONSTANT BIAS TO RETAIN RESISTANCE SETTING For users who desire nonvolatility but cannot justify the additional cost for the EEMEM, the AD5245 can be considered a low cost alternative by maintaining a constant bias to retain the wiper setting. The ...
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AD5245 I C INTERFACE C-COMPATIBLE 2-WIRE SERIAL BUS 2 The 2-wire I C serial bus protocol operates as follows: 1. The master initiates data transfer by establishing a START condition, which is when a high-to-low transition on ...
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Table 8 . Write Mode AD0 Slave Address Byte Table 9. Read Mode AD0 Slave Address Byte S = START condition P ...
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AD5245 Multiple Devices on One Bus Figure 47 shows two AD5245 devices on the same serial bus. Each has a different slave address because the states of their AD0 pins are different. This allows the RDAC within each device to ...
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... AD5245BRJ50-R2 –40°C to +125°C AD5245BRJ50-RL7 –40°C to +125°C AD5245BRJZ50-R2 1 –40°C to +125°C 1 AD5245BRJZ50-RL7 –40°C to +125°C AD5245BRJ100-R2 –40°C to +125°C AD5245BRJ100-RL7 –40°C to +125°C 1 AD5245BRJZ100-R2 –40°C to +125°C 1 AD5245BRJZ100-RL7 –40°C to +125°C 2 ...
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AD5245 NOTES 2 Purchase of licensed I C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the 2 purchaser under the Philips I C Patent Rights to use these components ...