PGA2505IDB

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The PGA2505IDB is an audio amplifier integrated circuit (IC). It is often used to amplify low-level audio signals. The PGA2505IDB is a wideband amplifier providing excellent linearity and audio performance over the full audio range. It is an efficient amplifier with a low very low noise floor, making it an ideal choice for digital audio and instrumentation applications.

The PGA2505IDB is a single-channel differential line and audio power amplifier. It is designed to provide high capacity and low distortion, with better THD+N performance on some of the frequencies. The amplifier is a wideband amplifier with a unity gain bandwidth (GBW) of 800 kHz. It has a slew rate of 2.7 V/µs and output current of 1A. In addition, it is capable of amplifying signals up to a ground referenced output of +35 dB. The operating temperature range is -40°C to +85°C.

Working Principle

The PGA2505IDB is designed to properly amplify low-level audio signals. It works in two stages, the first being the differential line amplifier stage and the second being the Audio Power Amplifier stage. The line amplifier stage first amplifies the incoming signal by 30dB, and then, the input signal is split into two non-inverting and inverting signals which are then combined to form a differential output. This differential output is then taken to the audio power amplifier stage. In this stage, the output is amplified again, up to a maximum of +35dB, and then sent to the output terminal. The PGA2505IDB is equipped with a low power shutdown pin, allowing the amplifier to stay completely shut off without drawing any current. This makes it a cost-effective option for applications where the amplifier needs to be used intermittently.

Applications

The PGA2505IDB is commonly used in a variety of audio applications such as portable audio devices, digital audio systems, and line inputs for high-end audio equipment. It is also used in instrumentation systems for measuring low-level signals, such as for measuring sound pressure levels. The PGA2505IDB is also well suited for applications that require low noise, such as high-end home audio systems and noise-sensitive medical applications.

The PGA2505IDB is a versatile amplifier that is ideal for audio applications. It has low power consumption, low distortion, and wideband operation making it an ideal choice for a variety of audio applications.

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