All Sections: LT Spice - 9

81. Op Amps Make Precision Clipper, Protect ADC
    Aaron Schultz Thomas Mosteller
    Articles Linear Technology LT6015 LT6016 LT6017
    A simple op amp clipping circuit can limit input-voltage excursions into an ADC, thus preventing input overload and possible damage to the converter. It can be a challenge to match the voltage range of an analog signal to the input range of an ...
    Jan 6, 2017

82. 1-Hz to 100-MHz VFC features 160-dB dynamic range
    Jim Williams
    Circuits Linear Technology LT1460 LTC1150 LTC6943
    The VFC (voltage-to-frequency-converter) circuit in Figure 1 achieves a wider dynamic range and a higher full-scale output frequency 100 MHz with 10% overrange to 110 MHz by a factor of 10 over any commercially available converter. The ...
    Jan 19, 2017

83. 3A, 1MHz Buck Mode LED Driver with Integrated Voltage Limiting
    Circuits Linear Technology LT3952
    .. Grant, Linear Technology Design Note 556 Introduction The LT®3952 monolithic LED driver includes a 4 A, 60 V DMOS power switch, excellent for driving high current LEDs in ...
    Mar 1, 2017
84. High-Voltage Amplifier Extends Coulomb-Counter Range to ±270 V
    Circuits Linear Technology LT6375 LTC2941
    Kris Lokere, Linear Technology Electronic Design Low-range current (coulomb counting) measurement is a challenge when the associated voltage is relatively high, but a configuration of standard ICs meets the requirements. A coulomb counter can ...
    Apr 11, 2017
85. Bidirectional DC/DC Regulator and Supercapacitor Charger
    Victor Khasiev
    Circuits Linear Technology LTC3110 LT8608
    Introduction The LTC®3110 bidirectional buck-boost DC/DC regulator charges and balances a supercapacitor when a bus voltage is present (for example 3.3 V) and discharges the supercapacitor into the load when the bus fails. The LTC3110 maintains ...
    May 5, 2017
86. Hybrid Switching/Linear Method Yields LED-Current Controller with Wide Dimming Ratio
    Thomas Mosteller
    Circuits Linear Technology LT3083 LT6015 LT8614 LTM8042
    By using two basic power-supply topologies in conjunction, this circuit provides an easily controlled current source that is well-suited for dimming LEDs Many applications for LED illumination require wide dimming ratios, which can be easily done ...
    Jun 21, 2017
87. 560V Input, No-Opto Isolated Flyback Converter
    Circuits Linear Technology LT8315
    George Qian, Linear Technology Design Note 559 Introduction In traditional isolated high voltage flyback converters, tight regulation is achieved using opto-couplers to transfer regulation information from the secondary-side reference circuitry to ...
    Jul 18, 2017
88. 2A, 2MHz, 60V Boost/SEPIC/Inverter DC/DC Converter with I_Q = 9μA
    News Analog Devices LT8362
    Analog Devices , which recently acquired Linear Technology Corporation, announces the LT8362 , a current mode, 2 MHz step-up DC/DC converter with an internal 2 A, 60 V switch. It operates from an input voltage range of 2.8 V to 60 V, suitable for ...
    Aug 31, 2017
89. The Wien-bridge oscillator is reborn
    Circuits Linear Technology LT1012 LT1056
    Michael Fisch EDN In 1940, William Hewlett and David Packard launched a product from a garage. The product was a Wien-bridge oscillator. It consisted of a single-pole highpass filter in series with a single-pole lowpass filter. To keep the gain ...
    Nov 9, 2017
90. Low-cost RF sniffer finds 2.4-GHz sources
    Circuits Linear Technology LT5534
    Vladimir Dvorkin, Linear Technology EDN Whether you measure or use RF circuits that operate in the popular 2.4-GHz ISM (industrial/scientific/medical) band, cordless telephones, Wi-Fi access points, Bluetooth devices, and microwave ovens can ...
    Nov 15, 2017

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