AD7655ASTZ

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Data Acquisition - Analog to Digital Converters (ADC) play an important role in a variety of applications and the AD7655ASTZ is no exception. This serial interface 12-bit A/D converter, when paired with its related peripheral circuitry, provides reliable performance and easy to use control for converting analog signals into linear digitally quantified form. In order to fully understand the capabilities and application field of the AD7655ASTZ, the following will explore its working principle.

AD7655ASTZ Working Principle

The working principle of the AD7655ASTZ is based on the basic binary technology. It utilizes a successive approximation register (SAR) along with other dedicated circuitry to break down an analog input signal into a series of binary digits or bits. The conversion process begins with the analog signal being compared with a reference voltage inside a successive approximation register (SAR). When the signal is less than the reference, a 0 is registered, and if greater than the reference voltage, a 1 is logged. This binary coding process is repeated until the input signal is broken down into enough bits to ensure accuracy, which is typically 12 bits for the AD7655ASTZ, meaning it can digitize a signal with a resolution of up to 0.0039%.

The AD7655ASTZ features an internal reference voltage of 2.5V or 0.5V, therefore the binary output of the AD7655ASTZ is representative of the fractional range of the reference voltage.

AD7655ASTZ Application Field

Due to its precise resolution, the AD7655ASTZ can be used in applications such as medical diagnostics, high end sound equipment, and precise instrumentation. It\'s capable of taking small analog signals and accurately boasting 0.0039% resolution, meaning the conversion and introduction of noise is greatly reduced. Its two internal reference voltages of 2.5V and 0.5V are provided for the designer to take advantage of and help eliminate external components such as an additional reference voltage generator.

The AD7655ASTZ is also suitable for other areas such as motor control and robotics, due to its superior low latency digital accuracy. This creates a more precise and controlled system when compared to its analog counterparts.

In addition, the AD7655ASTZ also has many other features that make it suitable for a variety of other applications. In addition to the serial port interface, it also features a single supply operation and low current consumption, which make it ideal for portable or handheld device applications. Furthermore, its low power shutdown mode helps to extend the battery life.

Conclusion

The AD7655ASTZ is an outstanding converter that can provide an accurate and reliable conversion of an analog signal into a digital form with 0.0039% resolution. It is a great choice for a variety of applications, including medical diagnostics, high end sound equipment, motor control, robotics, and portable or handheld device applications. Furthermore, its low power consumption and single supply operation make it an ideal choice for applications where energy efficiency is a primary design consideration.

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