Circuits & Schematics Analog Devices - 10

91. Current-Feedback Op Amps Save Power In Photodiode Apps
    Glen Brisebois
    Circuits Amplifiers Analog Devices LT1396
    Current-feedback amplifiers offer high bandwidth with minimal power-supply current draw. However, they're rarely used as transimpedance amplifiers in photodiode applications due to the high current noise of their inverting inputs. The Figure 1 ...
    Apr 8, 2022
92. Instrumentation Amplifier Extends DSO
    Bob Perrin
    Circuits Analogue Design Measurement Analog Devices AD620
    To determine the specifications of a solar-generating plant, I needed to accurately measure the load current a product consumed. The product switched several internal devices on and off during an interval of several seconds. An ammeter showed that ...
    Apr 5, 2022

93. Dual Flip-Flop Forms Simple Delayed-Pulse Generator
    Luca Bruno
    Circuits Oscillators Analog Devices AD558
    Some applications require clock-timing adjustments, such as generating precision clocks for time-interleaved ADCs, or delay adjustments in a variety of precision-timing and pulse-delay applications. This Design Idea describes a delayed-pulse ...
    Feb 7, 2022
94. Visual Voltage Tester Uses Single Op Amp
    David Dowe
    Circuits Measurement Analog Devices LT1637
    This Idea for Design provides a visual indication of an input voltage’s relationship to upper and lower threshold values and can be used as a quick pass/marginal/fail tester. It uses a modified Wien-Bridge oscillator structure to create an ...
    Jan 26, 2022
95. Delay line upgrades vintage scope
    Robert Houtman
    Circuits Measurement Analog Devices AD8055
    Vintage triggered-sweep oscilloscopes find use in many applications. However, they have no internal delay line, so they can't display the pulse that triggers the sweep. Moreover, early laboratory scopes contain delay lines having insufficient ...
    Dec 7, 2021
96. Amplifiers perform precision divide-by-2 circuit
    Glen Brisebois
    Circuits Analogue Design Supply Analog Devices LT1167 LTC2053
    The classic implementation of a voltage-halving circuit uses two equal-value resistors. Using 1% resistors provides a divider output with 2% accuracy. For most applications, this performance is cost-effective and more than adequate. However, when ...
    Nov 17, 2021
97. PWM-Based Analog Calculator Provides Four-Quadrant Multiplication, Division
    Mark Thoren
    Circuits Analogue Design Analog Devices LT1671 LT1991 LTC2054 LT6654 LTC6992
    You can build an analog calculator using a pulse-width modulator (PWM) to perform accurate four-quadrant multiplication and division. While this approach won’t help you ace any math tests, it demonstrates some useful sub-circuits that extend ...
    Nov 8, 2021
98. Voltage reference is software-programmable
    Reza Moghimi
    Circuits Oscillators Supply Analog Devices AD8555
    For a variety of reasons, designers often discover that their creations need yet more power-supply voltages. For example, a system powered by 2.5 V power supplies suddenly needs a precision 1.4 V reference for a signal-level-shifting circuit and ...
    Oct 25, 2021
99. Scheme cancels amplifier error
    David Magliocco
    Circuits Analogue Design Analog Devices OP97
    The circuit in Figure 1, using a low-offset amplifier, is a basic ohmmeter circuit common in multimeters, except for the addition of the two diode-connected transistors. A current source supplies a selectable current, I M , to ranging from 100 nA ...
    Oct 4, 2021
100. Instrumentation amp works from one supply
     Circuits Analogue Design Signal Processing, Filters Analog Devices LT1167 LT1498 LT1634
     Many single-supply applications need precision amplifiers that can operate from 5 V or lower. Although many precision, single-supply op amps are currently available for configuring as 2- and 3-amplifier instrumentation amplifiers (IAs), these ...
     Sep 30, 2021

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