An inductor is a passive element that converts electrical energy into magnetic energy, which in turn can be converted into electrical energy. It is one of the indispensable components in electronic circuits, and is widely used in all kinds of electronic equipment. Inductance is also a very important component in integrated circuits. According to different characteristics, inductors can be divided into many types. Below, we will introduce in detail the types of inductors commonly used in integrated circuits and their classification. 1. Coil inductance Coil inductance is a component that winds the wire into a spiral shape so that the current forms a magnetic field in the wire, thereby generating inductance. Such inductors are widely used in electronic devices, including integrated circuits. According to different structures, coil inductors can be divided into many types. Such as common mode inductance (CM), differential mode inductance (DM), self-resistance resonance inductance (Lr) and so on. Among them, common mode inductors and differential mode inductors are two common types of coil inductors. The common mode inductor is characterized by a small interval between the upper and lower pins, which is suitable for processing high-frequency signals and power signals. The differential mode inductor generates a magnetic field with a current in the same direction on two parallel coils to form an inductor. This inductor is suitable for handling low frequency signals and power signals. 2. Chip inductance Chip inductance is also one of the commonly used inductance types in integrated circuits. It appears as a long, narrow rectangle with a small volume and a high inductance value. Chip inductors are mostly used in digital circuits, such as inductor filters, DC/DC converters, and so on. According to different structural forms, the chip inductance can be divided into a variety of types, such as multi-layer structural chip inductance, magnetic ceramic chip inductance, ferrite chip inductance and so on. Among them, the multi-layer structure chip inductor is a more common type. It is characterized by its compact structure, high inductance value and low direct current resistance value. Multilayer structure chip inductors are suitable for processing high frequency signals and filters in digital circuits. 3. Magnetic inductance Magnetic inductance, as the name suggests, is a type of component that directly uses the magnetic properties of magnetic materials to form inductors. It is characterized by a magnetic material with high permeability and high coercivity, which can form a higher inductance value. Magnetic inductors in integrated circuits are mainly used in high-frequency circuits, including VCO (voltage-controlled oscillator), Mixer (mixer) and so on. According to different working methods, magnetic inductors can be divided into many types, such as bowl inductors for contact oscillators, mansion inductors, E-shaped inductors, U-shaped inductors, and so on. Among them, the bowl inductor is a common type, its structure is similar to a bowl, the middle is an iron core, has a high permeability, suitable for high frequency oscillator. 4. Integrated circuit capacitive load inductance Capacitive load inductance refers to the combination of capacitors and inductors to form a new type of inductive element. It is characterized by high quality factor and high Q value, suitable for high-precision filtering, resonance and other applications. In integrated circuits, capacitive load inductors are mainly used in high frequency circuits. According to different structural forms, capacitive load inductors can be divided into many types, such as L-type capacitive load inductors, C-type capacitive load inductors, T-type capacitive load inductors and so on. Among them, L-type capacitive load inductor is a commonly used type, its structure is relatively simple, suitable for low power, low frequency and radio transceiver. To sum up, there are many types of inductors in integrated circuits, and each type has different structural characteristics and scope of application. In the actual selection of inductors, it is necessary to comprehensively consider the specific application scenario, bandwidth, frequency, inductance value and other factors, integrated circuit to ensure that the selected inductor has good performance and suitable working range.