All Sections: LT - 8
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- R O OcayaCircuits Analog Devices LT1001It is known that the p-n diode can be the basis of an accurate thermometer for cryogenic temperatures up to about 200 C. A constant current is maintained through the diode and the voltage across it gives an indication of the temperature. The ...Oct 3, 2023
- Francis RodesCircuits Analog Devices LT1464The need for conditioning low-level ac signals in the presence of both common-mode noise and differential dc voltage prevails in many applications. In such situations, ac-coupling to instrumentation and difference amplifiers is mandatory to extract ...Sep 27, 2023
- Anthony SmithMany portable appliances and other products that must operate from a single cell are restricted to working at very low voltages. It is thus difficult to drive white LEDs that typically have a forward voltage of 3 to 5 V. The ability to flash the ...Sep 26, 2023
- Jim WilliamsCircuits Analog Devices LT1461 LT1671 LT1884 LTC1043Almost all precision voltage-to-frequency converters (V-F) utilize charge pump based feedback for stability. These schemes rely on a capacitor for stability. A great deal of effort towards this approach has resulted in high performance V-F ...Aug 29, 2023
- Stephen WoodwardSelf-powered isolation amplifiers, which need no external isolated power supply, provide versatile and convenient interfaces in many applications that require galvanic isolation of the signal source. Examples of such applications include circuits ...Jul 27, 2023
- David KimCircuits Linear Technology LT1946The schematic in Figure 1 shows a way to increase the power available from a current-limited 5 V supply by adding power from a 5 V supply. The dc/dc converter generates a single 12 V, 150-mA (1.8 W) output from two regulated and current-limited ...Jul 12, 2023
- Jim WilliamsCircuits Analog Devices LT1004 LT1006 LT1013 LT1226 LT1228Filter, audio, and RF-communications testing often require a random noise source. Figure 1’s circuit provides an RMS-amplitude regulated noise source with selectable bandwidth. RMS output is 300 mV with a 1 kHz to 5 MHz bandwidth, selectable ...Jun 27, 2023
- Jim WilliamsCircuits Analog Devices LT1017 LT1034 LTC1043Figure 1 is a “charge pump” type V/F converter specifically designed to run from a 3.3 V rail. A 0 V to 2 V input produces a corresponding 0 kHz to 3 kHz output with linearity inside 0.05%. To understand how the circuit works assume ...Jun 26, 2023
- Jon DutraCircuits Analog Devices LT1211This article describes an active load circuit that can be used to simulate a battery in any state of charge. The battery simulator provides a constant-voltage load for a battery-charging circuit, independent of applied charging current. The ...Jun 22, 2023
- Jim WilliamsCircuits Analog Devices LT1077 LTC1150 LTC1798 LTC6943It is often desirable to determine a battery’s internal resistance to evaluate its condition or suitability for an application. Accurate battery resistance determination is complicated by inherent capacitive terms which corrupt results taken ...Jun 22, 2023
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