RT1236B7TR7

Resistor Networks, Arrays - RT1236B7TR7 Application Field and Working Principle

RT1236B7TR7, as the name implies, is a tiny "Universal Resistor Array". It is a surface mounted package featuring twelve independent resistors in a single package. The resistors are all connected to each other, forming a complicated resistive network. The main purpose of the RT1236B7TR7 is for switching and signal routing, making it suitable for a wide variety of applications like board-level transistors, power circuits, and data buses.

The key benefit of using such an array is that it provides more flexibility than individual resistors, allowing the designer to easily control the switching parameters (aka switching waveform) for a wide range of signal processing and bus voltage applications. In comparison to a regular discrete resistor network, the RT1236B7TR7 also offers high resistance accuracy, higher operating temperature range, as well as better current and power handling capability. Additionally, the use of laser-trimmed resistors ensures better compensation accuracy and uniformity.

The RT1236B7TR7 is primarily used for switching applications, in which precision resistors are key. For example, they are widely used in power supply circuitry to accurately regulate the current passing through the power supply\'s protective circuitry. They are also commonly used in logic level shifters, where precision resistors are also important. In addition to its performance characteristics, the size of the RT1236B7TR7 array (about 4.6 x 4.5 x 1.3mm) makes it well-suited for high-density applications.

The working principle of the RT1236B7TR7 is relatively simple. In its simplest form, when power is applied to the resistor array A, the current will run from one resistor to the next in a predefined pattern. The direction of the current is determined by the polarity of the connections of the resistors. Thus, by carefully selecting the pattern of the connections, it is possible to switch the voltage across the resistors is a specific light pattern.

In addition to the simple switching functions, the RT1236B7TR7 array can also be arranged into more complex configurations for tasks like signal attenuation or data transfer. In these cases, the resistors are again arranged in a specific pattern, but the current does not only move in one direction. Instead, it cycles back and forth between the resistors, effectively reducing the signal amplitude or increasing the bit rate.

Overall, the RT1236B7TR7 is an ideal choice for applications involving switching, logic level shifting, and data buses, making it highly versatile. Its small package size, complicated internal structure, and high resistance accuracy ensure that it can be leveraged in even the most demanding applications. Thus, it remains an excellent option for application engineers who need a reliable and efficient resistor array.