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  • Distortion and source impedance in JFET-input op amps
    of two JFET-input op amps for high and low source impedance. A new fabrication process that limits common mode capacitance provides more device options when low distortion is required over a wide range of source impedance.
  • AN721: Impedance Matching Networks Applied to RF Power Transistors, Courtesy of Motorola
    Some graphic and numerical methods of impedance matching will be reviewed here. The examples given will refer to high frequency power amplifiers. Although matching networks normally take the form of filters and therefore are also useful to provide frequency discrimination, this aspect will only
  • Amplifying High-Impedence Sensors ? Photodiode Example
    conditioning + circuit used for high-impedance sensors that act like current sensors. FIGURE 1: Transimpedance Amplifier Current sensors connect to a transimpedance amplifier Equivalent Circuit. which converts current to voltage. The design approach illustrated in this application note, using op Step 1: DC
  • AN3012: Electrical Characterization of MAAMSS0031 CATV Amplifier at +5 Volts and Reduced Gain
    The MAAMSS0031 CATV amplifier is a GaAs MMIC which exhibits low noise and high linearity. It is ideally suited for set top boxes, home gateways, and other broadband internet based appliances. This amplifier is a monolithic single stage design in a 75 ohm input/output impedance environment
  • The sound which microphone received is too low
    Normally, the higher the impedance is, the better the sensitivity will be. However if the impedance is too high to get enough voltage/current, the high frequency response may get worse. Input higher voltage will increase the sensitivity. Depend on the design of the amplifier and the frequency
  • The sound which microphone received is too low
    Normally, the higher the impedance is, the better the sensitivity will be. However if the impedance is too high to get enough voltage/current, the high frequency response may get worse. Input higher voltage will increase the sensitivity. Depend on the design of the amplifier and the frequency
  • Power Design Considerations For LED Applications
    DACOUT, load the serial input register of the DAC with the code in Figure 1. In order to have 4mA through the current loop for 0V DACOUT, we use an offset voltage reference of 2.5V. In Figure 2, A1 is connected as a voltage follower amplifier which drives a very high impedance MOSFET Q2 and its
  • Programmable Current Loop
    DACOUT, load the serial input register of the DAC with the code in Figure 1. In order to have 4mA through the current loop for 0V DACOUT, we use an offset voltage reference of 2.5V. In Figure 2, A1 is connected as a voltage follower amplifier which drives a very high impedance MOSFET Q2 and its

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