628B103

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Resistor Networks, Arrays

Resistor networks and arrays are interconnected networks of resistors that allow resistors to be combined to create the desired electrical properties for a particular application. One of the most common resistor networks is the 628B103 network, which is used for low-frequency electrical circuits. This article will discuss the 628B103 application field and working principle.

628B103 Application Field

The 628B103 is a high-precision resistor network designed for frequencies of up to 1000MHz. It is used for low-frequency circuits in a variety of applications, including:

• RF filters
• LNA (Low Noise Amplifier)
• Switch matrices
• Gain control
• Voltage-controlled oscillators (VCOs)
• Phase-controlled VCOS
• Phase-controlled VCOs with non-linear amplification

The 628B103 is an ideal resistor network for low-frequency circuit applications, due to its high noise level and low parasitics. This makes it suitable for use in radiofrequency applications, where high-precision and low-noise circuitry is required.

Working Principle

The 628B103 is a high-precision resistor network with a topology that is derived from a well-known design. This network consists of a two-stage amplifier with four resistors in each stage, as shown in Figure 1. Each stage of the amplifier has two pairs of resistors connected in parallel, with one pair to ground and the other connected to the signal input. The two pairs of resistors form a single matching network that provides the required electrical characteristics of low noise and low parasitics.

Figure 1: 628B103 Resistor Network

The two stages of the amplifier are connected in series, with the signal input connected to the first stage and the output of the second stage connected to the signal output. The first stage provides the necessary gain for the circuit; the second stage is then used to control the level of the output signal and provide additional filtering of any noise that may have been amplified by the first stage. This configuration provides a low-noise, low-parasitic circuit with a relatively broad frequency response.

The two pairs of resistors in each stage will be connected differently depending on the electrical characteristics desired. The overall resistance of the three pairs of resistors is equal to the sum of the individual resistors in each of the two stages. When the voltage across the resistors is increased, the amount of current through the circuit increases, thus resulting in increased noise and parasitics. The 628B103 network uses a topology of resistors that ensures that the overall resistance remains constant at a given voltage and frequency, thus providing the desired level of performance.

The 628B103 is an excellent choice for applications that require low-noise and low-parasitic performance at low frequencies. The topology of this network ensures that the overall resistance remains constant, thus providing the desired electrical characteristics for a given application. The 628B103 is perfect for low-frequency circuit designs, and is capable of providing the necessary electrical performance in a variety of applications.

The specific data is subject to PDF, and the above content is for reference