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  • Comparing Digital Potentiometers to Mechanical Potentiometers
    unique linear positions along. the total resistive element. PA0 PW0 PB0. PA1 PW1 PB1. RDAC1. RDAC2. Data Register 0. Data Register 1. D7. D0. D7. D0. RS. Decode. Logic. D7. D0. CS. 16 Bit Shift Register. SCK. SI. SO. SHDN. Figure 2: This is an example of a dual digital potentiometer. The digital
  • Understanding Digital Potentiometers Resistor Variations
    ). The characterization graphs shown in Figure 10. through Figure 13 had Terminal B to VSS and Terminal. A to VDD. Within a voltage range, the change in resistance will be. linear relative to the device voltage. At some point as. the voltage decreases, the resistive characteristics of. the switches
  • Using a Digital Potentiometer to Optimize a Precision Single Supply Photo Detect
    . The potentiometer’s A and B. RF. 2n. resistive elements are used in this circuit so that the. gain versus the potentiometer digital code is linear. where: The transfer function of this circuit is: DCODE = the programmed code to the digital. potentiometer. EQUATION. RNOMINAL = the nominal resistance
  • Magnetic Field Sensors as Speed Monitors
    Magnetic field sensors are generally based on the magneto-resistive or Hall-principle. Compared to optical speed sensors, resolvers and precision potentiometers, magnetic field sensors do not contain movable parts, such as shafts, bearings, code disks or slip rings. An aspect allowing them
  • No contact means no headaches in position transducing
    impressed on the linear resistive track is coupled to the collector track, both permanently fixed, by the moving probe. The collector output amplitude is proportional to the probe's position along the track, and is scaled and filtered by a signal conditioning circuit. The equivalent circuit diagram
  • Position Sensors and Position-Sensing Instruments
    resistive, optical triangulation, photoelectric, position displacement, ultrasonic, and variable resistance technology sensors. Position-sensing instruments also include laser micrometers, linear encoders, linear potentiometers, and linear variable differential transformers (LVDTs). Rotary position
  • Bridge Sensing with the MCP6S2X PGAs
    Resistive sensors configured as Wheatstone bridges are primarily used to sense pressure, temperature or loads. An external A/D converter (ADC) and a digitally Programmable Gain Amplifier (PGA) can easily be used to convert the difference voltage from these resistor bridge sensors to usable digital
  • Sensing Light with a Programmable Gain Amplifier
    . (DS21117). However, to obtain good, linear perfor-. REFERENCE AND PGA. mance, the output should be kept within 300 mV from. the rails. This is specified in the conditions of the “DC. The photo sensor connected to CH0 of the MCP6S26. gain error” and “DC output non-linearity” in the. in Figure 1 uses

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