AD8402 PDF

These VR latches are updated from an SPI compatible serialto-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Ten data bits make up the data word clocked into the serial input register. The data word is decoded where the first two bits determine the address of the VR latch to be loaded, the last eight bits are data. A serial data output pin at the opposite end of the serial register allows simple daisy-chaining in multiple VR applications without additional external decoding logic. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.

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The model number is a specific version of a generic that can be purchased or sampled. Status Status indicates the current lifecycle of the product. This can be one of 4 stages: Pre-Release: The model has not been released to general production, but samples may be available.

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Package Description The package for this IC i. An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board. For detailed drawings and chemical composition please consult our Package Site.

Pin Count Pin Count is the number of pins, balls, or pads on the device. Temperature Range This is the acceptable operating range of the device. Please consult the datasheet for more information. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc.

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AD8402 Analog Devices, AD8402 Datasheet

The AD provides dual channel, position, digitally controlled variable resistor VR devices that perform the same electronic adjustment function as a potentiometer or variable resistor. Each channel of the AD contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completely programmable value of resistance, between the A Terminal and the wiper or the B Terminal and the wiper. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs and avoids any make-before-break or break- before-make operation. Each VR has its own VR latch, which holds its programmed resistance value.

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Power Shut-Down, Less than 5? Each channel of the AD contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completely programmable value of resistance, between the A Terminal and the wiper or the B Terminal and the wiper. The fixed A-to-B terminal resistance of 10 k? A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs and avoids any make-before-break or breakbefore-make operation.

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The model number is a specific version of a generic that can be purchased or sampled. Status Status indicates the current lifecycle of the product. This can be one of 4 stages: Pre-Release: The model has not been released to general production, but samples may be available. Production: The model is currently being produced, and generally available for purchase and sampling. Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.

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