ISO3080DWG4

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Digital isolators are an important technological development for use in modern automation and instrumentation applications where it is essential to protect sensitive or critical systems from electrical noise and other interference. The requirements of such applications often demand highly-integrated, space-saving solutions and products like the ISO3080DWG4 from Texas Instruments (TI) are specifically designed to meet those needs. The ISO3080DWG4 is a digital isolator with galvanic isolation, current monitoring, low power consumption, and low residual noise. It is a monolithic integrated circuit (IC) with a built-in integrated circuit chip that uses galvanic isolation techniques to electrically isolate on-chip and off-chip signal pathways. This article will provide an overview of the application field and working principle of the ISO3080DWG4.

Application Field

The ISO3080DWG4 can be used in a wide range of industrial automation and instrumentation applications. Its main features lend it to applications that require a protection of sensitive systems or those at risk from electrical noise or interference. The ISO3080DWG4 offers protection for circuits and systems such as those that use digital or analog I/O, encoders, or any system with a single-ended or differential input. It is also suitable for use in ground loop and earth loop protection, isolator replacement, and interfacing with host systems. Additionally, its low power consumption and high surge capability make it a great choice for protecting many types of systems.

Working Principle

The ISO3080DWG4 uses a galvanic isolation technique to provide isolation between two circuits. This technique relies on a capacitive isolation barrier, which is formed between two electrodes. The barrier transforms the electrical signal from one circuit to the other while preventing electrical current from passing between them. This process allows the ISO3080DWG4 to provide isolation while maintaining a low residual noise level and low power consumption. Additionally, the device is equipped with a current monitor feature that can monitor the electrical current in a circuit or system.

The power for the ISO3080DWG4 is supplied by an internal charge pump circuit that has a wide input voltage range that supports a standard supply voltage of 5.5V to 60V. The device features a common-mode noise rejection with a maximum of 15kV/μs and a typical value of 9kV/μs. This ensures that the device can provide the necessary protection against interference and noise, while still providing a low-power operation.

The ISO3080DWG4 also supports a wide range of outputs, including digital I/O, encoder signals, single-ended and differential inputs. The maximum output frequency is 408MHz at 15pF. These outputs are capable of driving up to 6mA at 3.3V and up to 12mA at 5V, making the device suitable for driving a range of applications.

The ISO3080DWG4 is a highly-integrated, low-power digital isolator with robust performance features. It is designed specifically for industrial automation and instrumentation applications and provides galvanic isolation, current monitoring, and low residual noise and power consumption. This device is easy to integrate into many types of systems due to its small footprint and wide operating temperature range.

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