EVAL-AD5171DBZ Analog Devices, EVAL-AD5171DBZ Datasheet
EVAL-AD5171DBZ
Specifications of EVAL-AD5171DBZ
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EVAL-AD5171DBZ Summary of contents
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... I C controllers or host processors and, therefore, significantly reduces the development time of the users. An AD5171 evaluation kit includes the software, connector, and cable that can be converted for factory programming applications. The AD5171 is available in a compact 8-lead SOT-23 package. All parts are guaranteed to operate over the automotive temper- ature range of − ...
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... Programmable Voltage Source with Boosted Output ........... 19 Level Shifting for Different Voltage Operation ...................... 19 Resistance Scaling ...................................................................... 19 Resolution Enhancement .......................................................... 20 RDAC Circuit Simulation Model ............................................. 20 Evaluation Board ............................................................................ 21 Outline Dimensions ....................................................................... 22 Ordering Guide .......................................................................... 22 1/05—Rev Rev. B Change to Features ............................................................................ 1 Changes to Electrical Characteristics ............................................. 3 Change to Table 3 .............................................................................. 6 Changes to Power Supply Considerations Section ...
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SPECIFICATIONS ELECTRICAL CHARACTERISTICS: 5 kΩ, 10 kΩ, 50 kΩ, AND 100 kΩ ± 10 −40°C < Table 1. Parameter DC ...
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AD5171 Parameter 8, 13, 14 DYNAMIC CHARACTERISTICS –3 dB Bandwidth Total Harmonic Distortion Adjustment Settling Time Power-Up Settling Time After Fuses Blown Resistor Noise Voltage 1 Typical specifications represent average readings at 25°C and V 2 Resistor position nonlinearity error, ...
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TIMING CHARACTERISTICS: 5 kΩ, 10 kΩ, 50 kΩ, AND 100 kΩ ± 10 −40°C < Table 2. Parameter INTERFACE TIMING ...
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AD5171 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter V to GND and V to GND Maximum Current Pulsed Continuous (R ≤ 1 kΩ, A Open) WB ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 W Wiper Terminal W. GND ≤ Positive Power Supply. Specified for operation from 2 5.5 V. For OTP programming, V ...
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AD5171 TYPICAL PERFORMANCE CHARACTERISTICS 0. 0.08 0.06 –40°C 0.04 0.02 0 –0.02 –0.04 –0.06 +25°C –0.08 –0. CODE (DECIMAL) Figure 5. R-INL vs. Code vs. Temperature 0. ...
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0.1 –40 – 100 TEMPERATURE (°C) Figure 11. I Supply Current vs. Temperature DD 180 160 140 120 100 –20 ...
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AD5171 6 0x3F 0 0x20 –6 0x10 –12 0x08 –18 0x04 –24 0x02 –30 0x01 –36 –42 –48 0x00 –54 100 1k 10k FREQUENCY (Hz) Figure 17. Gain vs. Frequency vs. Code 25°C A CODE = ...
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OPEN 25° 5kΩ 10kΩ 50kΩ 100kΩ CODE (DECIMAL) ...
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AD5171 THEORY OF OPERATION SCL SDA The AD5171 allows unlimited 6-bit adjustments, except for the one-time programmable, set-and-forget resistance setting. OTP technology is a proven, cost-effective alternative over EEMEM in one-time memory programming applications. The AD5171 employs fuse link technology ...
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VARIABLE RESISTANCE AND VOLTAGE FOR RHEOSTAT MODE If only the W-to-B or W-to-A terminals are used as variable resistors, the unused terminal can be opened or shorted with Terminal W. This operation is called rheostat mode (see Figure 26). A ...
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AD5171 Ignoring the effect of the wiper resistance, the transfer function is simply more accurate calculation, which includes the wiper resistance effect, yields ...
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TERMINAL VOLTAGE OPERATING RANGE There are also ESD protection diodes between V RDAC terminals; therefore, the V of the AD5171 defines their DD voltage boundary conditions (see Figure 31). Supply signals present on Terminal A, Terminal B, and Terminal W ...
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... SOFTWARE PROGRAMMING Due to the advantage of the one-time programmable feature, users may consider programming the device in the factory before shipping it to the end users. Analog Devices offers device programming software that can be implemented in the factory on PCs running Windows 95 to Windows XP platforms result, external controllers are not required, which significantly reduces development time ...
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Table 10. SDA Bits Definitions and Descriptions Bit Description S Start Condition. P Stop Condition. A Acknowledge. 2 AD0 I C Device Address Bit. Allows a maximum of two AD5171s to be addressed. X Don’t Care. T OTP Programming Bit. ...
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AD5171 the instruction byte, the last byte in the write mode is the data byte. Data is transmitted over the serial bus in sequences of nine clock pulses (eight data bits followed by an acknowledge bit). The transitions on the ...
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APPLICATIONS INFORMATION DAC It is common to buffer the output of the digital potentiometer as a DAC unless the load is much larger than R impede conversion and deliver higher current, if needed. 5V AD5171 OUT V ...
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... RESOLUTION ENHANCEMENT The resolution can be doubled in the potentiometer mode of operation by using three digital potentiometers. Borrowed from the Analog Devices patented RDAC segmentation technique, users can configure three AD5171s to double the resolution (see Figure 45). First, U3 must be parallel with a discrete resistor, R which is chosen to be equal to a step resistance (R Adjusting U1 and U2 together forms the coarse 6-bit adjustment, and adjusting U3 alone forms the finer 6-bit adjustment ...
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... SDA The AD5171 evaluation board comes with a dual op amp AD822 and a 2.5 V reference ADR03. Users can configure many building block circuits with minimal components needed. Figure 48 shows one of the examples. There is space available on the board where users can build additional circuits for further evaluations as shown in Figure 49 ...
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... Parts have a YWW or #YWW marking on the bottom of the package. Y shows the year that the part was made, for example for 2005. WW shows the work week that the part was made RoHS Compliant Part, # denotes RoHS compliant part may be top or bottom marked. 3 The evaluation board is shipped with three pieces of 10 kΩ parts. Users should order extra samples or different resistance options if needed. 2.90 BSC ...
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NOTES Rev Page AD5171 ...
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... AD5171 NOTES Purchase of licensed components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I 2 Rights to use these components system, provided that the system conforms to the I ©2004–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...