AD8174AR-REEL7

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The AD8174AR-REEL7 is a product from the Analog Devices Interface-Specialized series, particularly designed for applications requiring multiplexing and current sinking or source switching. It is perfectly suited for decoding infrared signals as well as for audio systems.

The AD8174AR-REEL7 is a current-input, low-voltage CMOS multiplexer-demultiplexer with a SPI (Serial Peripheral Interface) control capability. This device is equipped with a 16-bit parallel-input shift register that can store data and the SPI interface latch data. This latch data is then encoded and provided as output data via two serial outputs, allowing applications to directly interface to a wide range of serial buses.

The AD8174AR-REEL7 has two latches, one per each multiplexer output. This allows the device to both sink or source current. Both the multiplexer and its control logic support both voltage and current operation, allowing the AD8174AR-REEL7 to operate in industrial temperature and commercial temperature ranges.

The AD8174AR-REEL7 also features an enhanced spurious supervision protocol. This protocol ensures that faults, caused by a short between the output and the supply pins, are correctly detected and flagged for immediate diagnosis and repair. Additionally, this protocol provides a robust solution for EMC considerations.

As the AD8174AR-REEL7 is a current-input device, its useful purpose is expanded. The device is typically used to switch current in audio systems and is suitable for use with both balanced and unbalanced applications. It is also used to decode infrared signals in home environments, such as remote controls and home entertainment systems, by providing a multiplexed current output as an interface between a digital logic circuit and several analog outputs.

The AD8174AR-REEL7 performance is largely dependent on the input signals, which should be steady DC signals with minimal variation. In addition, the input impedance for most devices should stay high enough to provide adequate current sourcing or sinking capabilities. The output impedance of the devices should also be chosen with care to ensure proper operation at either low or high frequencies.

The AD8174AR-REEL7 can be employed at a wide range of supply voltage levels and temperature ranges, depending on application requirements. The output current ranges between 10μA and 90mA (sink and source), allowing the device to switch a wide range of output impedances. This makes it suitable for use in a variety of applications requiring current switching.

The AD8174AR-REEL7 is an ideal choice for audio systems, home entertainment systems and a variety of analog applications, especially those requiring multiplexing and current sinking or source switching. Its low-voltage CMOS technology, combined with extensive spurious supervision, ensures a high-performance and reliable product for robust and reliable operation.

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