All Sections: LT Spice - 5

41. Single cell V-F converter
    Circuits Analog Devices LT1017
    High speed and precision are not the only areas where special V-F circuits are needed. Figure 1 shows a circuit which runs from a single 1.5 V cell with only 125 µA current drain. The circuit uses an LT1017 dual micropower comparator in a ...
    31-07-2024

42. High stability quartz stabilized V-F converter
    Circuits Analog Devices LM199 LT1001 LT1011 LT1056 LTC1043
    The gain temperature coefficient of conventional V-F circuits is affected by drift in the charge pumping capacitors. Although compensation schemes are employed to minimize the effect of this drift, another approach is required to get significantly ...
    30-07-2024

43. Precision programmable current source uses two ICs
    Circuits Analog Devices LT1991 LT1995 LT1996
    This Design Idea mates a precision current source IC with precision difference amp chips to create a programmable current source or sink. The resistor-programmable current source/sink in Figure 1 illustrates the basic topology, taking advantage of ...
    17-07-2024
44. How to correctly charge the lithium-ion/lithium-polymer batteries
    Articles Linear Technology LTC1733
    Electronic designers must be aware of the ideal charging method, as it increases the battery’s lifetime and enhances its performance. Nowadays Lithium-ion/Lithium-polymer are used extensively in portable electronic devices that are frequently ...
    18-06-2024
45. The elegance of a flyback controller without a dedicated isolated feedback path
    Articles Analog Devices LT8300
    Figure 1 shows the architecture of a conventional isolated flyback converter. These converters can be found frequently in power classes of up to about 60 W. A supply voltage is converted to an output voltage with the help of a primary-side switch ...
    16-05-2024
46. ROHM develops a new op amp that minimizes current consumption
    News ROHM LMR1901YG-M
    .. cabins without compromising functionality. In addition to various technical documents necessary for circuit design and SPICE models for simulation (available free of charge on ROHM’s website), the LMR1901YG-M can be used with ROHM ...
    16-04-2024
47. Virtual-zener circuit simplifies high-voltage interface
    Circuits Analog Devices LT1021
    This design for a photonic switch needs more than approximately 70 V at the cathode of a duo-lateral optical position-sensing device. This voltage gets speedy response at longer wavelengths, such as 980 nm. The circuit uses fast transimpedance ...
    01-04-2024
48. Switching regulator provides ±15 V output from an 8 V to 40 V input without a transformer
    Circuits Linear Technology LT1074
    Many systems derive 15 V supplies for analog circuitry from an input voltage that may be above or below the 15 V output. The split supply requirement is usually fulfilled by a switcher with a multiple-secondary transformer or by multiple switchers. ...
    19-02-2024
49. ±5V converter uses off-the-shelf surface mount coil
    Circuits Linear Technology LT1176
    Single-output switching regulator circuits can often be adapted to multiple output configurations with a minimum of changes, but these transformations usually call for custom wound inductors. A series of standard inductors, featuring quadrifilar ...
    05-02-2024
50. LT1176CN8-5#PBF — Datasheet Analog Devices
    Datasheets Analog Devices LT1176CN8-5#PBF
    Step-Down Switching Regulator The LT1176 is a 1A monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry and all current limit components are ...
    30-01-2024

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