High resistance class: Electronic scales are op amps with high input resistance. This type of operational amplifier generally uses field effect transistors to achieve high input impedance characteristics. If FET is used as the input stage, it has high input impedance, low input bias current, high speed, wide band, low noise, and large input offset voltage. This type of operational amplifier can be applied to signal generator circuits, measurement amplifier circuits, sample and hold circuits, etc.
Precision categories: general definition Uos <500 μ V is a precision operational amplifier type.
Low noise class: General definition Un<10nV/ Low-noise op amps. Under the following circumstances can consider the choice of low power
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Low power consumption: General definition I<1mA/ch is a low power operational amplifier. Under these circumstances, we can consider the choice of low-power computing devices, battery-powered portable electronic products to meet the complexity of small and lightweight circuits
Low input bias current: General definition IB<100pA is input bias current operational amplifier.
Broadband: General definition GBW> 5MHZ is a wideband op amp.
Wide voltage: general definition 5V
High speed: Op-amps with unity-gain wideband and high slew rates, typically defined as high-speed op amps with a bandwidth >500 MHz . Under the following circumstances can consider the choice of high-speed computing components: video systems, communications systems, instrumentation, digital cameras, high-speed ADC front-end signal conditioning circuits, DVD , HDTV , set-top boxes, etc. require the conversion rate of integrated operational amplifiers to be higher. When the unit gain bandwidth is large enough. High-speed op amp applications cannot generally be replaced with general-purpose integrated op amps.
Low power consumption: A class of operational amplifiers with low static power consumption, low operating current and voltage, and generally define the supply current <1mA as a low power operational amplifier. Low-power computing units can be considered in the following situations: No need for high-bandwidth portable products, test and measurement circuits, and medical systems
High-precision: a type of computing device that features low offset, low temperature drift, low noise, and high gain, and generally defines an offset voltage <1mA as a high-precision operational amplifier. A high-precision arithmetic unit can be considered in the following cases: High-gain circuit in the case of ensuring that the signal error is small relative to the input signal, in the case of weak signal input, while ensuring that the output voltage is within the range of the calculator output voltage G>100 , wide operating temperature range circuit, input voltage range limited single-supply <5V data acquisition circuit, test and measurement instrument, automotive electronics, industrial automation control system, military defense
High voltage and high power class: The output of this type of integrated operational amplifier is six large. The high voltage and high current integrated operational amplifier can output high voltage and high current without any additional circuit. A general-purpose operational amplifier + auxiliary circuit can achieve high output voltage and high current
General-Purpose Operational Amplifiers: Currently the most widely used integrated op amp, you can consider selecting a general-purpose computing unit in any of the following situations: Any electronic system that requires the addition of a simple signal gain or signal conditioning function. Therefore, in applications where there are no special requirements, try to use a general-purpose integrated operational amplifier in order to reduce costs, easy to source
Low-temperature drift class: This type of operational amplifier is mainly used in precision instruments, weak signal detection and other automatic control instruments. Because these devices require the op amp's offset voltage to be small and do not change with temperature
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