LT1058ISW#PBF

Linear Amplifiers - Instrumentation, OP Amps, Buffer Amps

The LT1058ISW#PBF is a quad operational amplifier offering rail-to-rail input and output voltage and current capabilities. It boasts low bias current, fast slew rate, low voltage noise, and small packages. Its four low-noise op-amps are useful in various applications such as active filters, motor or actuation systems, AC/DC converters, multiplexers, video processing, and data acquisition. They are also useful for general-purpose applications or those that require a high unity gain bandwidth and low noise.

Application Field

The LT1058ISW#PBF has a myriad of potential applications. Some of its more general uses include active filters, motor or actuation systems, AC/DC converters, multiplexers, video processing, and data acquisition. Additionally, its low noise, railways inputs and outputs and small package size make it ideal for a wide range of audio applications such as audio mixers, active speakers, and audio signal processing which require low noise, low distortion, and high accuracy. As stabilized voltage sources the LT1058ISW#PBF can also be used to build stabilized power supply units, surge cancelation and power line filter compensation systems, general-purpose power supplies, and even lithium-ion battery chargers.

Working Principle

The LT1058ISW#PBF consists of four independent, voltage-feedback, low-noise operational amplifiers that feature an input voltage range that can extend up to the rails. It has a full rail-to-rail common-mode input and output voltage range, low bias current, low noise and low distortion. Each of the four op-amps has an input voltage noise of < 2.5nV/\sqrt{Hz} and can deliver up to 150mA of output current. Additionally, the part has a slew rate of 5V/\mu s and a gain-bandwidth product of 6MHz.

The LT1058ISW#PBF is based upon a common-source input topology coupled with a cascode stage at the output. The common-source input stage provides low input capacitance and wide common-mode voltage range while the cascode output stage helps to reduce the Miller effect and improves the output current capability of the part. The result is an operational amplifier that is stable over temperature and supply variations, low in distortion, and capable of driving large capacitive loads.

The LT1058ISW#PBF offers various features to optimize user applications. It features a unity-gain stable mode that enables the user to achieve a stable gain of +/-1V/V. Additionally, the part has an output short-circuit protection feature that can protect the device from output overloading. The common-mode feed-forward compensation networks provide the user with the necessary assets to compensate the device\'s logical frequency performance.

In summary, the LT1058ISW#PBF is an excellent choice for applications that require a low-noise, high speed, low distortion and small package size such as active filters, motor or actuation systems, AC/DC converters, multiplexers, video processing, and data acquisition. Additionally, its low noise, railways inputs and outputs make it ideal for audio applications like audio mixers, active speakers, and audio signal processing.