Circuits & Schematics Analog Devices - 9

81. LT1635 1A shunt charger
    Mitchell Lee
    Circuits Supply Analog Devices LT1635
    Most battery chargers comprise nothing more than a series-pass regulator with current limit. In solar-powered systems, you can’t count on sufficient headroom to keep a series regulator alive, so a shunt method is preferred. A simple shunt ...
    Mar 27, 2023
82. Single IC forms precision triangular-wave generator
    Akshay Bhat
    Circuits Oscillators Analog Devices MAX9000
    The linearity of triangular waveforms makes the triangular- wave generator useful in sweep circuits and test equipment. For example, switched-mode power supplies and induction motor-control circuits often include a triangular-wave oscillator as ...
    Mar 17, 2023

83. Battery simulator has variable ESR response
    Barry Galvin
    Circuits Measurement Supply Analog Devices LT1167 LT1236 LT1884
    You may lack experience and hardware when designing battery-operated products. The battery life of a product can depend more on the ESR (equivalent series resistance) than the terminal voltage. This situation is especially true when you use ...
    Mar 16, 2023
84. Finely tune the hue of blue-light sources
    Marián Štofka
    Circuits Light Analog Devices AD5228 AD590JR AD8602ARM-REEL
    When coach cars of long-range trains comprised compartments for six to eight passengers, the passengers could choose either “white” or deep blue light. The blue light helped passengers sleep, even when they were not in full darkness. ...
    Mar 14, 2023
85. Low-power, super-regenerative receiver targets 433-MHz ISM band
    Cedric Mélange Jan Vandewege Johan Bauwelinck
    Circuits Radio Analog Devices ADCMP371
    Designers often choose a super-regenerative receiver despite its frequency instability and poor selectivity for battery-powered, short-range, wireless applications in which power consumption is a major issue. Examples include remote-keyless-access ...
    Mar 1, 2023
86. Adjustable 0 V to 5 V power supply
    Kevin Vasconcelos
    Circuits Supply Analog Devices LT1006 LT1029 LT1076
    Linear regulator ICs are commonly used in variable power supplies. Common types such as the 317 can be adjusted as low as 1.25 V in single-supply applications. At low output voltages power losses in these regulators can be a problem. For example, ...
    Feb 27, 2023
87. Add a manual reset to a standard three-pin-reset supervisor
    Derek Vanditmars
    Circuits Supply Microcontrollers Usage Analog Devices ADM809
    Adding a manual reset to a design usually involves designing in a new part with a manual-reset input. But, by adding a couple of low-value resistors, a standard three-pin-reset supervisor can work in most applications. The circuit in Figure 1 ...
    Feb 20, 2023
88. Simple circuit provides high-side current sensing
    B Kazay Martin Ossmann
    Circuits Measurement Supply Analog Devices OP90
    In power supplies or battery chargers, you often need information about the current flowing in the high-side rail. Figure 1 shows a common circuit for obtaining this information. Figure 1. This method for measuring high-side supply current requires ...
    Feb 14, 2023
89. RF-telemetry transmitter features minimal parts count
    Francis Rodes
    Circuits Wireless Measurement Analog Devices LTC1250
    Requirements for portable, short-range telemetry systems frequently include low power consumption, small size, and low cost. The circuit in Figure 1 meets these criteria and uses only three off-the-shelf ICs and a few passive components. Although ...
    Feb 13, 2023
90. Resistive DAC and op amp form hybrid divider
    Marián Štofka
    Circuits Analogue Design Oscillators Analog Devices AD5293 AD8677
    A resistive DAC in a resistive-feedback loop of an op amp lets you create an analog-digital-analog divider. The resistance, R WA , between the W and A terminals of the Analog Devices AD5293 (Figure 1) decreases linearly with increasing the ...
    Feb 6, 2023

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