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  • Using PWM to Generate Analog Output
    Pulse Width Modulation (PWM) modules, which produce basically digital waveforms, can be used as cheap Digital-to-Analog (D/A) converters only a few external components. A wide variety of microcontroller applications exist that need analog output but do not require high resolution D/A converters
  • Driving the Analog Inputs of a SAR A/D Converter
    the impact of an operational amplifier on the analog-to-digital conversion in terms of DC as well as ac responses. A typical system block diagram of the SAR converter application is shown in Figure 1. Some common SAR converter systems are Data Acquisition Systems, Transducers Sensing Circuits, Battery
  • D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF Waveforms
    of complex analog waveforms.: (PWM and R-2R Ladder). Both the Pulse Width Modulation (PWM) and resistor ladders require only a few external components to create a D/A converter with the PICmicro? microcontroller series. These techniques can be used to generate dual-tone multiplexed frequencies (DTMF
  • DC-DC Converter Overview
    and again. to get rid of it. Typical efficiencies of these DC-DC converters reduce this waste heat by better than an. order of magnitude. Page 2 of 22. PWM POWER DELIVERY. Switch. Storage/Filter. Vs. Load. PWM. CONTROL. 95%. 50%. 5%. These figures illustrate the most basic PWM operation. The PWM
  • Trimming The Output Voltage Of DC/DC Converters
    The simplest and least expensive solution is to connect a resistor from the VOUT Adjust pin to the minus (-) reference point or to the plus (+) reference point (positive point where the feedback RF resistor is connected. When a variable voltage source, such as a digital-to-analog converter (D
  • Synchronization
    one converter is re-. synchronization). The design of the 15W series is based. quired, synchronization should be used if it is available. on a current mode PWM in a forward topology configura-. It can reduce cost, space and conducted and radiated. tion. The oscillation frequency is set by a R -C
  • Switch Mode Battery Eliminator Based on a PIC16C72A
    The PIC16C72A is a member of the PICmicro (R) Mid-Range Family of 8-bit, high-speed microcontrollers. The PIC16C72 provides the following features: 5 Channel, 8-bit Analog-to-Digital Converter (A/D) ? CCP Module to generate a PWM output I 2 C/SPI Module 3 Timers 8 Interrupt sources This application
  • Adjustable Switching Voltage Regulators
    For non-isolated switching voltage regulators (SVR or SR), such as our SRAD20 series, the feedback control of the PWM is used to adjust the output voltage of the regulator. The PWM voltage reference is 2 volts with an accuracy between 1% and 3%. When the converter is required to provide a more

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