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Amplifiers Main Categories

Amplifiers Main categories

classification

Integrated op amp main category

The following describes the different operational amplifiers with different characteristics.

Universal Integrated Operational Amplifier

Universal integrated operational amplifier refers to its technical parameters are relatively moderate, to meet the requirements of most cases of use. General-purpose integrated operational amplifier is divided into Ⅰ, Ⅱ and Ⅲ type, of which type Ⅰ is a low-gain operational amplifier, Ⅱ type in the power amplifier, type Ⅲ for the high gain operational amplifier. Type I and type II are basically early products with an input offset voltage of about 2 mV and an open loop gain of typically greater than 80 dB.

High precision integrated operational amplifier

High-precision integrated operational amplifiers are those op amps that are low in offset voltage, very drift in temperature, and very high gain and common-mode rejection. The noise of such op amps is also small. One of the single-chip high-precision integrated operational amplifier offset voltage can be as little as a few microvolts, the temperature drift as little as tens of microvolts per degree Celsius.

High Speed Integrated Operational Amplifier

High-speed integrated operational amplifier output voltage conversion rate is large, some up to 2 ~ 3kV / μS.

High Input Impedance Integrated Operational Amplifier

The input impedance of the high input impedance integrated operational amplifier is very large and the input current is very small. This type of op amp input stage is often used MOS tube.

Low power integrated operational amplifier

Low-power integrated operational amplifier current is very small, the power supply voltage is very low, the entire operational amplifier power consumption is only tens of micro-tile. This type of integrated operational amplifier is used in portable electronic products.

Broadband Integrated Operational Amplifier

Broadband integrated operational amplifiers have a wide band with a unity gain bandwidth of up to gigahertz and are often used in wideband amplifiers.

High Voltage Integrated Operational Amplifier

General integrated operational amplifier supply voltage below 15V, while the high-voltage integrated operational amplifier supply voltage up to dozens of volts.

Power Integrated Operational Amplifier

The power stage integrates the output stage of the operational amplifier to provide a relatively large power output to the load.

Fiber amplifier

The optical amplifier can not only directly amplify the optical signal, but also has real-time, high gain, broadband, online, low noise, low loss all-optical amplification, is a new generation of optical fiber communication system essential key devices; The technology not only solves the limitation of the decay of the optical network transmission rate and distance, but more importantly, it creates a wavelength division multiplexing in the 1550nm band, which will make the ultra-high speed, large capacity, ultra long distance wavelength division multiplexing (WDM ), Dense wavelength division multiplexing (DWDM), all-optical transmission, optical soliton transmission and so on, is an epoch-making milestone in the development of optical fiber communication. (EDFA), semiconductor optical amplifier (SOA) and fiber Raman amplifier (FRA), etc. Among them, erbium-doped fiber amplifier is widely used in its long-term performance. Distance, high-capacity, high-speed optical fiber communication systems, access networks, fiber optic CATV networks, military systems (radar multiplex data, data transmission, guidance, etc.) as power amplifiers, relay amplifiers and preamplifiers The

Fiber amplifiers are typically composed of gain media, pump light, and input-output coupling structures. At present, fiber amplifiers are mainly composed of erbium-doped fiber amplifiers, semiconductor optical amplifiers and fiber-optic Raman amplifiers. According to their application in fiber-optic networks, fiber amplifiers have three main applications: on the transmitter side as a power amplifier to improve the emission The power of the machine; in the receiver before the optical pre-amplifier to greatly improve the sensitivity of the optical receiver; in the optical fiber transmission line for the relay amplifier to compensate for fiber transmission loss, extend the transmission distance.