All Sections: LT Spice - 2

11. A temperature-compensated, calibration-free anti-log amplifier
    Christopher Paul
    Articles Texas Instruments REF35250
    .. equation for V 0 given in Figure 1 comes from the Ebers-Moll model. A more advanced model employed by many modern spice simulators, such as LTspice, is the Gummel-Poon model, which I won’t discuss here. It suffices for ...
    Sep 22, 2025

12. Fake contacts, bounced to order
    Nick Cornford
    Circuits Texas Instruments CD74HC132 CD74HC4520
    .. are available! Capturing the bounces from a real switch and then replaying them at varying rates is one approach, and SPICE models are apparently available. I’ve not played with the latter, but trust that its developers had fun ...
    Sep 22, 2025
13. Signal conditioning for platinum temperature transducers
    Jim Williams
    Circuits Analog Devices LT1006 LT1009 LT1027 LT1078 LTC1290
    High accuracy, stability, and wide operating range make platinum RTDs (resistance temperature detectors) popular temperature transducers. Signal conditioning these devices requires care to utilize their desirable characteristics. Figure 1’s ...
    Sep 10, 2025
14. When pulses are omitted in switch-mode power supplies
    Frederik Dostal
    Articles Analog Devices LT3573 LT8620
    Even switch-mode power supplies with a fixed switching frequency do not always show a continuing pattern of pulses. In some conditions, pulses are omitted for various reasons. This is important to consider for output ripple voltage and EMI effects. ...
    Sep 1, 2025
15. Improve the accuracy of programmable LM317 and LM337-based power sources
    Christopher Paul
    Articles Texas Instruments OPA186
    Several Design Ideas (DIs) have employed the subject ICs to implement programmable current sources in an innovative manner ( References 1-3 ). Figure 1 shows the idea. Figure 1. Two independent current sources, one for loads referenced to the more ...
    Aug 26, 2025
16. High-isolation converters use off-the-shelf magnetics
    Mitchell Lee
    Circuits Linear Technology LT1172
    Isolated flyback converters usually evoke thoughts-or bitter memories-of custom transformers, slipped delivery schedules, and agency-approval problems. Off-the-shelf flyback transformers carry isolation ratings of only 300 to 500 V and rarely of as ...
    Aug 26, 2025
17. Ultra-low-noise phantom microphone supply uses tiny DC-DC converter plus capacitor "trick"
    Christopher Jarboe Thomas Mosteller
    Circuits Analog Devices LT8362
    Professional condenser microphones require a 48-V supply to charge the internal capacitive transducer and power the internal buffer for the high-impedance transducer output. You can use a simple boost converter, a filter circuit to reduce ...
    Aug 25, 2025
18. A simulated 100-MHz VFC
    Jim McLucas
    Circuits Texas Instruments TLA431 SN74LVC1G14
    Stephen Woodward, a prolific circuit designer with way more than 100 published Design Ideas (DIs), had his “80 MHz VFC with prescaler and preaccumulator” [ 1 ] published on October 17, 2024, as a DI on the EDN website. Upon reading his ...
    Aug 19, 2025
19. PESD2CANFD72LT-QR — Datasheet Nexperia
    Datasheets Nexperia PESD2CANFD72LT-QR
    

    ESD protection for in-vehicle networks ESD protection device in a small SOT23 Surface-Mounted Device (SMD) plastic package, designed to protect two automotive in-vehicle network bus lines from the damage caused by ElectroStatic Discharge (ESD) and ...
    Aug 19, 2025
20. PESD2CANFD72LT-Q — Datasheet Nexperia
    Datasheets Nexperia
    ESD protection for in-vehicle networks ESD protection device in a small SOT23 Surface-Mounted Device (SMD) plastic package, designed to protect two automotive in-vehicle network bus lines from the damage caused by ElectroStatic Discharge (ESD) and ...
    Aug 19, 2025

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