The LM4562 chip features extremely low distortion, low noise, high slew rate, a wide operating voltage range, and high output current for unprecedented performance. Because of these advantages, this operational amplifier is suitable for professional-grade and high-end audio systems, such as audio/video system receivers, preamplifiers, audio decoders and hi-fi amplifiers, as well as various medical imaging systems and industrial equipment.
The LM4562 chip is uniquely designed with not only a high-speed 6MHz unity-gain bandwidth operational amplifier, but also a proprietary stereo audio driver amplifier, which is the key circuitry for the entire audio system, and signal conditioning to ensure that the audio system delivers superior audio performance. In standard operation, the operational amplifiers feature a low input noise density of 2.7nV/√Hz, a mid-range noise corner of 60Hz, and an output current of 26mA to drive a 600Ω load. The LM4562 chipset features a slew rate of 20V/μs and a gain bandwidth of 55MHz.
The LM4562 chip can be configured to operate in either ±2.5V or ±2.5V mode, with the exception of the LM4562's low power consumption, which has been designed to operate in a low power environment. The LM4562 is capable of stable operation over a supply voltage range of ±2.5V to ±17V, with a maximum output current of 45mA. When operated over the above supply voltage range, the chip's input circuitry achieves a ****-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) of over 108dB, while the input bias current is as low as 10μA (typ.). With the full support of the output stage, the audio function of the LM4562 op amp can be fully utilized.
The LM4562 operational amplifier can be fully utilized even when driving capacitive loads of up to 100pF. The chip features a mute function that suppresses switching noise and reduces the output of the amplifier to its quiescent current equivalent, which is useful for saving power. In addition, the chip is protected against thermal overload and output short circuits.