AD5272BRMZ-20 Analog Devices Inc, AD5272BRMZ-20 Datasheet
AD5272BRMZ-20
Specifications of AD5272BRMZ-20
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AD5272BRMZ-20 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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AD5272/AD5274 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics—AD5272 .......................................... 3 Electrical Characteristics—AD5274 .......................................... 5 Interface Timing Specifications.................................................. 7 Absolute Maximum Ratings............................................................ 9 ...
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SPECIFICATIONS ELECTRICAL CHARACTERISTICS—AD5272 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE Resolution 2, 3 Resistor Integral Nonlinearity 2 Resistor Differential ...
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AD5272/AD5274 Parameter 5 Power Supply Rejection Ratio 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 ...
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ELECTRICAL CHARACTERISTICS—AD5274 Table 4. Parameter Symbol DC CHARACTERISTICS— RHEOSTAT MODE Resolution 2, 3 Resistor Integral Nonlinearity R-INL Resistor ...
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AD5272/AD5274 Parameter Symbol 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 ...
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INTERFACE TIMING SPECIFICATIONS 5.5 V; all specifications T DD Table 7. 1 Parameter Conditions 2 f Standard mode SCL Fast mode t Standard mode 1 Fast mode t Standard mode 2 Fast mode t Standard ...
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AD5272/AD5274 Shift Register and Timing Diagrams CONTROL BITS SCL t 6 SDA RESET DB9 (MSB Figure 2. Shift Register Content ...
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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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AD5272/AD5274 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS AD5272 AD5274 W 3 TOP VIEW (Not to Scale) EXT_CAP 5 Figure 4. MSOP Pin Configuration Table 10. Pin Function Descriptions Pin No. Mnemonic Description 1 ...
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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 6. R-INL in R-Perf Mode vs. Code vs. Temperature (AD5272) 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 ...
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AD5272/AD5274 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 12. R-DNL in Normal Mode vs. Code vs. Temperature (AD5272) 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 18. R-INL in Normal Mode vs. Code vs. Temperature (AD5274) 0. 20kΩ AW 0.02 0.01 0 –0.01 –0.02 –0. 128 ...
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AD5272/AD5274 256 512 0 64 128 CODE (Decimal) Figure 24. 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 IN –20 –40 –60 –80 –100 100 1k 10k FREQUENCY (Hz) Figure 30. THD + N vs. Frequency 0.03 0.02 0.01 ...
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AD5272/AD5274 0.07 0.09 0.11 0.13 TIME (Seconds) Figure 36. 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 37. Long-Term Drift Accelerated Average by Burn-In ...
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TEST CIRCUITS Figure 38 to Figure 42 define the test conditions used in the Specifications section. DUT Figure 38. Resistor Position Nonlinearity Error (Rheostat Operation; R-INL, R-DNL CODE = 0x00 DUT I ...
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AD5272/AD5274 THEORY OF OPERATION The AD5272 and AD5274 digital rheostats are designed to operate as true variable resistors for analog signals within the terminal voltage range of V < V < TERM contents determine the resistor wiper position. ...
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WRITE OPERATION It is possible to write data for the RDAC register or the control register. When writing to the AD5272/AD5274, the user must begin with a start command followed by an address byte ( 0), after which ...
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AD5272/AD5274 READ OPERATION When reading data back from the AD5272/AD5274, the user must first issue a readback command to the device, this begins with a start command followed by an address byte ( 0), after which the AD5272/AD5274 ...
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RDAC REGISTER The RDAC register directly controls the position of the digital rheostat wiper. For example, when the RDAC register is loaded with all zeros, the wiper is connected to Terminal A of the variable resistor possible to ...
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Table 13. Write and Read to RDAC and 50-TP memory DIN SDO 1 Action 0x1C03 0xXXXX Enable update of wiper position and 50-TP memory contents through digital interface. 0x0500 0x1C03 Write 0x100 to the RDAC register, wiper moves to ¼ ...
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MEMORY WRITE-ACKNOWLEDGE POLLING After each write operation to the 50-TP registers, an internal 2 write cycle begins. The I C interface of the device is disabled. To determine if the internal write cycle is complete and the 2 I ...
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AD5272/AD5274 EXT_CAP CAPACITOR A 1 μF capacitor to V must be connected to the EXT_CAP pin SS (see Figure 47) on power-up and throughout the operation of the AD5272/AD5274. AD5272/ AD5274 50_OTP MEMORY EXT_CAP BLOCK C1 1µ ...
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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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... AD5272/AD5274 ORDERING GUIDE 1 Model R (kΩ) AW AD5272BRMZ-20 20 AD5272BRMZ-20-RL7 20 AD5272BRMZ-50 50 AD5272BRMZ-50-RL7 50 AD5272BRMZ-100 100 AD5272BRMZ-100-RL7 100 AD5272BCPZ-20-RL7 20 AD5272BCPZ-100-RL7 100 AD5274BRMZ-20 20 AD5274BRMZ-20-RL7 20 AD5274BRMZ-100 100 AD5274BRMZ-100-RL7 100 AD5274BCPZ-20-RL7 20 AD5274BCPZ-100-RL7 100 EVAL-AD5272SDZ RoHS Compliant Part. Resolution Temperature Range 1,024 −40°C to +125°C 1,024 −40°C to +125°C 1,024 − ...
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NOTES Rev Page AD5272/AD5274 ...
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AD5272/AD5274 NOTES refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). ©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08076-0-11/10(C) Rev ...