ISL28158FBZ-T7

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The ISL28158FBZ-T7 is an instrumentation amplifier which provides “short circuit” operational capability as well as high common mode signal range. It features industry-leading precision, high gain accuracy, wide input signal common mode range, low offset voltage, low noise and distortion, low power consumption and high input impedance. As such, it is common industry. It is frequently used in various professional applications.

Applications

The ISL28158FBZ-T7 is ideal for applications such as strain gauge bridges, signal conditioning of pressure and flow sensors, process monitoring systems, precision current sense amplifiers, motor control systems, acoustic recording systems, synchronization systems and in audio equipment. Its wide input signal common mode range and its high gain accuracy make it especially suitable for bridge measurements, either for dynamic or static measurements. Its low power consumption makes it a perfect choice for portable sensor applications.

Working Principle

The ISL28158FBZ-T7 is a single-supply, precision three-op amp instrumentation amplifier. It uses an input stage op amp, an output buffer op amp, and a control amplifier to achieve an optimal closed-loop gain in a very wide range. The core circuitry of the device consists of a differential input, a gain-controlled differential stage, and a low speed output buffer. The differential input amplifiers have wide input common mode ranges and excellent dynamic performance, making them ideal for bridge input applications. The open-loop gain of the device is controlled by the gain setting determined by the feedback resistors, Rg and Rf. The control amplifier then adjusts the gain of the device to the gain set by the external resistors. The output has low offset voltage, low noise and distortion and it can deliver up to 10mA of output current.

The ISL28158FBZ-T7 is an excellent choice for instrumentation amplifier applications due to its precision, high gain accuracy, wide input signal common mode range, low offset voltage, low noise and distortion, low power consumption, and high input impedance.

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