ISL54003IRTZ

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The ISL54003IRTZ linear amplifier is designed for use in a range of audio applications. It has a built-in line driver, enabling flexibility in connection options, and features low noise operation. This amplifier is specifically tailored for use in audio applications where low distortion, low noise and wide dynamic range are required.

The transformer’s efficient power stage is composed of an input differential amplifier, two cascaded emitter followers and a voltage source emitter follower output. This circuit can accept differential or single-ended inputs and provides a high dynamic range and extremely low distortion. The high transconductance of the output current source makes the amplifier suitable for a wide range of audio applications.

The ISL54003IRTZ features a wide operating supply voltage range from 4.5V to 36V. It is also designed to handle temperature variations well, making it an ideal choice for most audio applications. This amplifier is configured with a Class AB output stage and maintains good linearity over the supply voltage range.

The input differential amplifier of the ISL54003IRTZ is composed of four transistors, including a differential pair of input transistors. The differential pair’s inputs can be connected to single-ended sources or inverting and non-inverting inputs. The differential pair supplies bias current to the various stages, controls the LVPECL/LVDS data range, and provides temperature compensation.

The two cascaded emitter followers provide voltage gain and an LVPECL/LVDS output signal. Additionally, these stages act to reduce the skew between the positive and negative signals. An internal voltage regulator is responsible for providing the bias current for the differential pair, dependent upon the voltage of the external power supply.

To ensure low noise, the amplifier incorporates an integrated line driver. This feature helps to minimize noise from the microphone to the amplifier, thereby preserving the signal integrity. The integrated line driver also enables it to support low-impedance applications such as headsets. Additionally, the built-in line driver eliminates the need for an additional line driver circuit in the system.

The integrated line driver of the ISL54003IRTZ provides a dedicated voltage source drive and current source drive output. The voltage source drive output is low noise, permitting a low impedance drive to an active speaker via a pre-amplified headphone jack. The current source drive output is used to drive balanced and unbalanced inputs.

The ISL54003IRTZ amplifier is designed to provide low noise, low distortion and high dynamic range performance in audio applications. The wide operating voltage range and efficient power stage make it ideal for applications where reliability and performance are required. With its integrated line driver, it makes it possible to directly drive low-impedance speakers and headphones. As such, the ISL54003IRTZ makes an excellent choice for audio amplification in a variety of consumer and industrial applications.

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