The main reason for destroying a device is to apply a voltage outside the specified range of the device. From the standpoint of the reliability of systems shipped to the market, it is important to take measures, such as protective devices, on circuits to prevent devices from being destroyed by overvoltage.
The power supply of the operational amplifier must be established at or before the input signal is entered. Otherwise, overvoltage or latch problems may occur.
When an operational amplifier is used as an input circuit for an external sensor (Figure 1).
The power on state of the op amplifier is in the correct order before the sensor signal is fed into the op amplifier. But is it guaranteed that this procedure is always followed correctly?
In this case, the channel protector product makes it easy to protect the op amplifier from accidental input signals.
In recent years, regulations on standby power have become stricter mainly in the EU. Small battery - operated devices such as portable devices and sensor terminals need to be powered on and off in order to use energy efficiently.
This can be easily achieved by using LTC2955.
When designing an instrument amplifier, you may be careful about the characteristics of the output voltage (VOUT) range that can be achieved against the input common mode voltage (VCM) and processing method of the REF terminal, but sometimes we find it difficult to identify the characteristics by overlooking the rules. Analog Devices's AD8237 is an instrumentation amplifier that was developed to avoid such oversight and design margin problems.
Within industrial equipments, an AC/DC insulated power supply with a large power capacity is installed in order to operate a large load such as a motor. In addition to supplying power to the motor, the same AC/DC power supply is used to supply power to the control circuit board, etc., or a separate discrete AC/DC power supply is used.
