OPA336NA/250G4

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The OPA336NA/250G4 is a monolithic amplifier IC which can be classified under Linear –Amplifiers – Instrumentation, OP Amps, Buffer Amps. It is primarily used for instrumentation and system control. The primary applications that this IC is suitable for are in low-side current sensing applications and low-side gate drive applications. It is also used in voltage regulation and other systems.

The device has an input voltage up to ±24V, providing a maximum supply current of 250mA and featuring an integrated two-stage feedback configuration and a slew rate of 11V/μs. Its output voltage range is up to 24V peak-to-peak, which provides excellent output to input isolation. The maximum peak output current is ±200mA.

The internal circuitry of the device consists of an operational amplifier in a two-stage feedback configuration, which consists of an NPN input transistor with an integrated feedback resistor and a PNP output transistor. The device also features a temperature sensing diode, which allows the feedback loop to adjust the current to the reference temperature.

The core elements on the device are the input and output buffers. The input buffer is an integrated NPN transistor and is responsible for making sure that the amplifier can be driven by low-side current sensing applications and low-side gate drive applications. The output buffer is a PNP transistor, and its purpose is to provide the necessary voltage and current isolation between the input and output of the device. This is required for instrumentation and system control applications.

The OPA336NA/250G4 also features an integrated thermal protection circuit, which is enabled when the output current exceeds a certain level. This prevents the device from frying due to excessive temperature. The device also has low-bias current, which reduces the current consumption and increases the system efficiency.

The working principle of the OPA336NA/250G4 is based on the operational amplifier configuration. An operational amplifier is a differential amplifier, with an low-impedance gain stage and a high-impedance gain stage, which is followed by the output buffer. The first stage amplifies the input signal and the second stage provides a gain of unity. The output buffer then provides the necessary voltage and current isolation between the input and output of the device.

The device is designed to work in conditions of positive and negative supply voltages, and each supply voltage should never exceed the absolute maximum ratings as indicated in the data sheet of the device. In conclusion, the OPA336NA/250G4 is an excellent monolithic amplifier IC, offering great performance and reliability for instrumentation and system control applications.

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