EVAL-AD5270SDZ Analog Devices Inc, EVAL-AD5270SDZ Datasheet
EVAL-AD5270SDZ
Specifications of EVAL-AD5270SDZ
Related parts for EVAL-AD5270SDZ
EVAL-AD5270SDZ Summary of contents
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FEATURES Single-channel, 1024-/256-position resolution 20 kΩ, 50 kΩ, 100 kΩ nominal resistance Maximum ±1% nominal resistor tolerance error 50-times programmable (50-TP) wiper memory Rheostat mode temperature coefficient: 5 ppm/°C 2 5.5 V single-supply operation ±2 ±2.75 ...
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AD5270/AD5271 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics—AD5270 .......................................... 3 Electrical Characteristics—AD5271 .......................................... 5 Interface Timing Specifications.................................................. 7 Absolute Maximum Ratings............................................................ 9 ...
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SPECIFICATIONS ELECTRICAL CHARACTERISTICS—AD5270 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE Resolution Resistor Integral Nonlinearity 2 Resistor ...
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AD5270/AD5271 Parameter 10 Power Dissipation 5 Power Supply Rejection Ratio DYNAMIC CHARACTERISTICS Bandwidth Total Harmonic Distortion Resistor Noise Density 1 Typical specifications represent average readings at 25° Resistor position nonlinearity error (R-INL) is the deviation ...
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ELECTRICAL CHARACTERISTICS—AD5271 Table 4. Parameter DC CHARACTERISTICS—RHEOSTAT MODE Resolution 2, 3 Resistor Integral Nonlinearity 2 Resistor Differential Nonlinearity ...
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AD5270/AD5271 Parameter 5, 11 DYNAMIC CHARACTERISTICS Bandwidth Total Harmonic Distortion Resistor Noise Density 1 Typical specifications represent average readings at 25° Resistor position nonlinearity error (R-INL) is the deviation from an ideal value measured between the maximum resistance ...
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INTERFACE TIMING SPECIFICATIONS Table 7. 1 Parameter Limit Unit min min 2 t ...
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AD5270/AD5271 SCLK SYNC DIN SDO Figure 4. Read Timing Diagram (CPOL = 0, CPHA = 1) Rev Page ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 8. Parameter V to GND GND GND A W Digital Input and Output Voltage to GND ...
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AD5270/AD5271 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS AD5270 AD5271 TOP VIEW (Not to Scale) EXT_CAP 5 6 Figure 5. MSOP Pin Configuration Table ...
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TYPICAL PERFORMANCE CHARACTERISTICS 0.8 +125°C +25°C –40°C 0.6 0.4 0.2 0 –0.2 –0.4 0 128 256 384 512 640 CODE (Decimal) Figure 7. R-INL in R-Perf Mode vs. Code vs. Temperature (AD5270) 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 ...
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AD5270/AD5271 0.15 +125°C +25°C –40°C 0.10 0.05 0 –0.05 –0.10 –0.15 0 128 256 384 512 640 CODE (Decimal) Figure 13. R-DNL in Normal Mode vs. Code vs. Temperature (AD5270) 0.20 +125°C +25°C –40°C 0.15 0.10 0.05 0 –0.05 –0.10 ...
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CODE (Decimal) Figure 19. R-INL in Normal Mode vs. Code vs. Temperature (AD5271) 0. 20kΩ AW 0.02 0.01 0 –0.01 –0.02 –0. 128 ...
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AD5270/AD5271 256 512 0 64 128 CODE (Decimal) Figure 25. Tempco ΔR /ΔT vs. Code WA 0 0x200 (0x80) –10 0x100 (0x40) 0x080 (0x20) –20 0x040 (0x10) 0x020 ...
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5V/ CODE = HALF SCALE NOISE BW = 22kHz rms –20 IN –40 –60 –80 –100 100 1k 10k FREQUENCY (Hz) Figure 31. THD + N vs. Frequency 0.03 0.02 0.01 ...
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AD5270/AD5271 0.07 0.09 0.11 0.13 TIME (Seconds) Figure 37. V Waveform While Writing Fuse EXT_CAP 0.006 0.005 0.004 0.003 0.002 0.001 0 –0.001 –0.002 0 0.15 0.17 Figure 38. Long-Term Drift Accelerated Average by Burn-In ...
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TEST CIRCUITS Figure 39 to Figure 43 define the test conditions used in the Specifications section. DUT Figure 39. Resistor Position Nonlinearity Error (Rheostat Operation; R-INL, R-DNL) R CODE = 0x00 DUT I W ...
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AD5270/AD5271 THEORY OF OPERATION The AD5270 and AD5271 are designed to operate as true variable resistors for analog signals within the terminal voltage range of V < V < The RDAC register contents deter- SS TERM DD mine ...
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RDAC AND 50-TP READ OPERATION A serial data output SDO pin is available for readback of the internal RDAC register or 50-TP memory contents. The contents of the RDAC register can be read back through SDO by using Command 2 ...
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AD5270/AD5271 SHUT-DOWN MODE The AD5270/AD5271 can be shut down by executing the software shutdown command, Command 9 (see Table 11), and setting the LSB to 1. This feature places the RDAC in a zero- power-consumption state where Terminal Ax is ...
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Table 15. Memory Map Command Number … … don’t care. SDO PIN AND DAISY-CHAIN ...
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AD5270/AD5271 PROGRAMMING THE VARIABLE RESISTOR Rheostat Operation—1% Resistor Tolerance The nominal resistance between Terminal W and Terminal kΩ, 50 kΩ, or 100 kΩ and has 1024-/256-tap points accessed by the wiper terminal. The 10-/8-bit data in ...
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OUTLINE DIMENSIONS IDENTIFIER PIN 1 INDEX AREA 0.80 0.75 0.70 SEATING PLANE 3.10 3.00 2.90 5. 3.10 4.90 3.00 4.65 1 2.90 5 PIN 1 0.50 BSC 0.95 15° MAX 0.85 1.10 MAX 0.75 0.15 0.23 6° 0.30 ...
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... AD5271BRMZ-20-RL7 20 AD5271BRMZ-100 100 AD5271BRMZ-100-RL7 100 AD5271BCPZ-20-RL7 20 AD5271BCPZ-100-RL7 100 EVAL-AD5270SDZ RoHS Compliant Part. ©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Resolution Temperature Range 1,024 −40°C to +125°C 1,024 −40°C to +125°C 1,024 − ...