AD5292BRUZ-20 Analog Devices Inc, AD5292BRUZ-20 Datasheet
AD5292BRUZ-20
Specifications of AD5292BRUZ-20
AD5292BRUZ-20-U1
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AD5292BRUZ-20 Summary of contents
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FEATURES Single-channel, 256-/1024-position resolution 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance Maximum ±1% nominal resistor tolerance error (resistor performance mode) 20-times programmable wiper memory Rheostat mode temperature coefficient: 35 ppm/°C Voltage divider temperature coefficient: 5 ppm/° ...
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AD5291/AD5292 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics—AD5291 .......................................... 3 Resistor Performance Mode Code Range ................................. 4 Electrical Characteristics—AD5292 .......................................... 6 Resistor ...
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SPECIFICATIONS ELECTRICAL CHARACTERISTICS—AD5291 10 16 −40°C < T < +105°C, unless otherwise noted. A Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE ...
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AD5291/AD5292 Parameter DYNAMIC CHARACTERISTICS Bandwidth Total Harmonic Distortion V Settling Time W Resistor Noise Density 1 Typical values represent average readings at 25° Resistor position nonlinearity error. R-INL is the deviation from an ideal value ...
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Table 3. |V − Resistor Tolerance DD SS per Code R-Tolerance From 0x2A From 0x00 to 0xFF to 0xD5 2% R-Tolerance From 0x11 From 0x00 to 0xFF ...
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AD5291/AD5292 ELECTRICAL CHARACTERISTICS—AD5292 10 16 −40°C < T < +105°C, unless otherwise noted. A Table 4. Parameter DC CHARACTERISTICS—RHEOSTAT MODE ...
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Parameter DYNAMIC CHARACTERISTICS Bandwidth Total Harmonic Distortion V Settling Time W Resistor Noise Density 1 Typical values represent average readings at 25° Resistor position nonlinearity error. R-INL is the deviation from an ideal value measured ...
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AD5291/AD5292 Table 6. Resistor |V − Tolerance per DD SS Code R-Tolerance From 0x08C From 0x000 to 0x3FF to 0x35F 2% R-Tolerance From 0X03C From 0x000 to ...
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Timing Diagrams SCLK SYNC DIN SDO t 10 RDY RESET SCLK SYNC DIN SDO RDY Figure 3. Write Timing Diagram, CPOL ...
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AD5291/AD5292 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 8. Parameter V to GND GND GND LOGIC GND A B ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 10. Pin Function Descriptions Pin No. Mnemonic Description 1 RESET Hardware Reset Pin. Refreshes the RDAC register with the contents of the 20-TP memory register. Factory default loads midscale until the first 20-TP wiper ...
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AD5291/AD5292 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 128 256 384 512 640 CODE (Decimal) Figure 6. R-INL in R-Perf Mode vs. Code vs. Temperature (AD5292) 0 20kΩ AB 0.5 ...
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R = 20kΩ AB 0.10 0.05 0 –0.05 –0.10 –0.15 +25°C –40°C –0.20 0 128 256 384 512 640 CODE (Decimal) Figure 12. R-DNL in Normal Mode vs. Code vs. Temperature (AD5292) 1 20kΩ AB 1.0 0.5 ...
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AD5291/AD5292 0 20kΩ AB 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 0 128 256 384 512 640 CODE (Decimal) Figure 18. INL in Normal Mode vs. Code vs. Temperature (AD5292) 0.10 0.05 0 –0.05 –0.10 –0.15 –0.20 ...
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R = 20kΩ AB 0.12 0.10 0.08 0.06 0.04 0.02 0 –0.02 –0.04 +25°C –40°C –0. 128 160 CODE (Decimal) Figure 24. R-DNL in R-Perf Mode vs. Code vs. Temperature (AD5291) 0.25 +25°C –40°C 0.20 ...
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AD5291/AD5292 0.25 –40°C +25°C 0.20 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 –0. 20kΩ AB –0. 128 160 CODE (Decimal) Figure 30. INL in R-Perf Mode vs. Code vs. Temperature (AD5291) 0.14 +25°C –40°C ...
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CODE (Decimal) Figure 36. DNL in Normal Mode vs. Code vs. Temperature (AD5291) 450 400 350 I LOGIC 300 250 200 150 100 ...
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AD5291/AD5292 0 0x200 (0x80) –5 –10 0x100 (0x40) –15 0x080 (0x20) –20 0x040 (0x10) –25 0x020 ( 0x08) –30 0x010 (0x04) –35 0x008 (0x02) –40 0x004 (0x01) –45 0x002 0x001 –50 10 100 1k 10k FREQUENCY (Hz) Figure 42. 20 ...
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CODE ...
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AD5291/AD5292 –1 TIME (ms) Figure 54. V Waveform While Reading Fuse Or Calibration EXT_CAP –2 TIME (ms) Figure 55. V Waveform While Writing Fuse EXT_CAP 75 ...
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TEST CIRCUITS Figure 58 to Figure 63 define the test conditions used in the Specifications section. NC DUT CONNECT Figure 58. Resistor Position Nonlinearity Error (Rheostat Operation; R-INL, R-DNL) DUT ...
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AD5291/AD5292 THEORY OF OPERATION The AD5291 and AD5292 digital potentiometers are designed to operate as true variable resistors for analog signals that remain within the terminal voltage range of V < patented ±1% resistor tolerance feature helps to ...
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MEMORY Once a desirable wiper position is found, the contents of the RDAC register can be saved into a 20-TP memory register (see Table 12). Thereafter, the wiper position is always set at that position for any future on-off-on ...
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AD5291/AD5292 BASIC OPERATION The basic mode of setting the variable resistor wiper position (programming the RDAC register) is accomplished by loading the shift register with Command 1 (see Table 11) and the desired wiper position data. When the desired wiper ...
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RESISTOR PERFORMANCE MODE This mode activates a new, patented 1% end-to-end resistor tolerance that ensures a ±1% resistor tolerance on each code, that is, code = half scale kΩ ± 100 Ω. See Table 2 WB (AD5291) ...
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AD5291/AD5292 PROGRAMMING THE VARIABLE RESISTOR Rheostat Operation—1% Resistor Tolerance The AD5291 and AD5292 operate in rheostat mode when only two terminals are used as a variable resistor. The unused terminal can be left floating or tied to the W terminal, ...
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Operation of the digital potentiometer in the voltage divider mode results in a more accurate operation over temperature. Unlike the rheostat mode, the output voltage is dependent mainly on the ratio of the internal resistors, R not the absolute values. ...
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AD5291/AD5292 APPLICATIONS INFORMATION HIGH VOLTAGE DAC The AD5292 can be configured as a high voltage DAC, with output voltage as high The circuit is shown in Figure 70. The output is ⎡ ⎤ ⎛ ⎞ ...
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AUDIO VOLUME CONTROL The excellent THD performance and high voltage capability make the AD5291 and AD5292 ideal for a digital volume control as an audio attenuator or gain amplifier. A typical problem in these systems is that a large step ...
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... COPLANARITY 0.10 ORDERING GUIDE 1 Model R (kΩ) AB AD5291BRUZ-20 20 AD5291BRUZ-20-RL7 20 AD5291BRUZ-50 50 AD5291BRUZ-50-RL7 50 AD5291BRUZ-100 100 AD5291BRUZ-100-RL7 100 AD5292BRUZ-20 20 AD5292BRUZ-20-RL7 20 AD5292BRUZ-50 50 AD5292BRUZ-50-RL7 50 AD5292BRUZ-100 100 AD5292BRUZ-100-RL7 100 EVAL-AD5292EBZ RoHS Compliant Part. 5.10 5.00 4. 6.40 BSC 1 7 0.65 BSC 1.20 0.20 MAX ...
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NOTES Rev Page AD5291/AD5292 ...
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AD5291/AD5292 NOTES ©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07674-0-9/10(D) Rev Page ...