ISL28210FBZ-T7A

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ISL28210FBZ-T7A, a compact, high performance bi-directional current sense amplifier, is designed specifically to provide a cost-effective solution for bi-directional current sensing applications. It is a dual-channel amplifier specifically designed to detect very low differential voltage (incurred by the current) across a Shunt Resistor, converting that differential voltage into a Analog Voltage Output proportional to the measured differential voltage. As such, it is a dedicated and complete solution for current sensing applications, replacing voltage mirrors and op-amp configurations, thereby allowing for an easy, space saving and cost effective design. The ISL28210FBZ-T7A is packaged in a compact DIP8 form factor, making it suitable for board-level designs and for fold-back current monitoring applications.

Features

• Wide Supply Range from 2.7V to 36V
• Bi-Directional, +/- 30mA Current Sense
• High Accuracy ±30mA Measurement
• Low Drift 100PPM/˚C
• Low Supply Current 15µA/AMP
• Low Offset Voltage 2mV
• Small Housed in 8-DIP Pack

Application Fields and Working Principle

The ISL28210FBZ-T7A is ideal for use in linear and instrumentation applications such as motor control, inverter control, smart chargers, battery monitoring, and high voltage power supplies. Its wide operating voltage range of 2.7V to 36V, low offset voltage of 2mV, and low drift of 100PPM/°C makes it ideal for such applications.

The ISL28210FBZ-T7A employs a differential amplifier topology, designed to directly measure differential voltages. The main feature is its wide common-mode input voltage range, allowing it to measure signals across a wide voltage range and under a variety of conditions. The low noise circuitry and low offset voltage also help to produce a precise measurement, so that the device can accurately sense very small differential voltages. When the differential voltage is applied, the current is sensed by one side of the amplifier and then amplified by a differential output stage. The output stage delivers an analogue voltage proportional to the sensed differential voltage, allowing for simple and accurate current monitoring.

The ISL28210FBZ-T7A also features a self-biasing topology, enabling it to operate without an external bias voltage. This makes it easier to design and a cost effective solution for linear and instrumentation applications. It also includes a sleep mode for reduced current consumption (< 10 µA) when the device is not in use.

Conclusion

The ISL28210FBZ-T7A is a cost-effective, high performance bi-directional current sense amplifier designed to accurately measure very small differential voltages. It offers a wide operating voltage range, low offset voltage and low drift which make it ideal for Linear, Instrumentation and Buffer Amplifier applications. It is available in a small DIP8 package, making it suitable for board-level designs and for fold-back current monitoring applications. With its wide range of features, the ISL28210FBZ-T7A is an excellent choice for current sensing applications.

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