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Analog Switch Circuits

Analog Switch Acts As Dc/DC Converter: 01/20/00 EDN-Design Ideas  PDF contains multiple circuits - scroll to find this circuit.

Analog Switch Cuts Peak Detector Reset Time: 05/25/95 EDN-Design Ideas


Analog switch expands I 2 C interface: 11/22/2001 EDN - Design Ideas /  Perhaps the most effective way to gain board space and increase component density is to minimize wiring on the board. A widely used architecture that allows such miniaturization is the I2C bus. Comprising only a bidirectional data line, SDA, and a clock line, SCL, this bus requires no chip selects or other additional connections. .

Analog switch frees stuck IC bus: 06/26/03  EDN-Design Ideas / The dual-channel PCA9540 I2C multiplexer often breaks up an I2C or SM bus or allows you to use devices with the same addresses on the same bus. When the PCA9540 initially powers up, it comes up in a state in which both channels are deselected. The I2 C or SM-bus master can then address the control register in the PCA9540 to select either Channel 0 or Channel 1, connecting the master to the ap....

Analog switch lowers relay power consumption: 12/20/2001 EDN - Design Ideas / Designers often use relays as electrically controlled switches. Unlike transistors, their switch contacts are electrically isolated from the control input. However, the power dissipation in a relay coil may render the device unattractive in battery-powered applications. You can lower this dissipation by adding an analog switch that allows the relay to operate at a lower voltage (Figure 1). .

MOSFETs reduce crosstalk effects on analog switches: 05/29/03  EDN-Design Ideas / Some cost-effective analog multiplexer/demultiplexer ICs, such as the CD4053 and CD4066, find frequent use as signal distributors. These digitally controlled analog switches have low on-resistance. However, with all channels in the same package, crosstalk can be annoying and unavoidable. Figure 1 provides a cost-effective and viable method of solving this problem....

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