ISL28214SOICEVAL2Z

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ISL28214SOICEVAL2Z is a dual ultralow power operational amplifier evaluation board with ultralow input offset voltage and very low supply currents. It is used to evaluate the performance of ultralow power operational amplifiers or ultra-high input impedance operational amplifiers as well as to test their response with different applications. The dual ultralow power operation amplifiers featured on the ISL28214SOICEVAL2Z are designed to draw very low input bias and offset current, reduce quiescent current and minimized noise levels.

The on-board circuitry of the ISL28214SOICEVAL2Z typically can power down each of the two operational amplifiers when they are not in use. This is done either via the quiescent current shuttering (QCS) terminals or via manual shuttering. The QCS terminals are used to enable/disable the amplifiers when the board is in a low-power mode and the manual shuttering is typically used when the user wants to gain access to the amplifiers’ control ports. This allows for a more flexible power selection and shuttering approach, making the ISL28214SOICEVAL2Z a more versatile evaluation board.

The two main advantages of using the ISL28214SOICEVAL2Z for an evaluation board powering a wide range of low power amplifiers are its very low power dissipation and very high performance. When placed in low-power mode, the ISL28214SOICEVAL2Z can provide supply currents that are lower than 10 mA and provide power consumption levels as low as 0.33 W. In addition, the ISL28214SOICEVAL2Z provides high-performance parameters such as very low input offset voltage (down to 0.1 mV), high common-mode range (up to 26V) and high frequency operation (up to 1.4 GHz).

The application fields of the ISL28214SOICEVAL2Z include buffering, filtering, and signal conditioning in applications ranging from handheld devices that follow the battery/solar-powered principles, wearable and IoT applications working with low power and low noise, and medical instrumentation requiring low power solutions. The ISL28214SOICEVAL2Z is also suitable as an in-situ powering solution for commercial applications working within a wide range of supply voltages such as 4V to 16V.

The working principle of the ISL28214SOICEVAL2Z is in its ability to provide on-board supply current configuration and bias selection, as well as the ability to change the supply current via the QCS terminals, manual shuttering or limited power-on mode operations. This allows the amplifiers to be powered up very quickly and for the amplifiers to draw minimal current when in use. The amplifier’s response can also be measured by connecting the amplifier’s output signal to a low input impedance signal generator or oscilloscope.

In summary, ISL28214SOICEVAL2Z evaluation board offers a very economical and efficient solution for low-power ultra-high input impedance operational amplifiers by providing an on-board operational amplifier power supply switching, bias selection, manual shuttering, limited power-on mode operations, and very low power consumption. The ISL28214SOICEVAL2Z application fields include portable, solar-powered, wearable and IoT applications. The working principle is to provide an on-board supply current configuration and bias selection, as well as the ability to change the supply current of the amplifiers.

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