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Resistor Networks, Arrays

Resistor networks, arrays, or matrices are groups of resistors integrate into a single linear or nonlinear network. A number of different configurations can be used including floating, grounded, isolating, and bridging type networks. Each type of network has different application fields and works on principles for achieving a desired result, such as filtered signal conditioning and amplification. In this article we explore the various types of networks and methods of resistance array configuration and construction, as well as the 7681-63153GP-TR13 application field, and working principles.

Types of Resistor Networks

Resistor networks are either linear or non-linear. Linear networks are circuit designs composed of resistors forming a closed loop, therefore producing no current flow. While non-linear networks are made up of resistors, capacitors and semiconductors where current flow is expected. Linear networks can be simply grounded, isolated, or bridging type.

Isolated

Isolated resistor networks are built up of a network of resistors whose two ends can be connected together without shorting out the circuit. It acts as a filter or amplifier, and in some cases provides an isolated ground for the output.

Bridging

Bridging resistor networks are composed of resistors with two inputs and two outputs that will either amplify or reduce the signal, depending on the resistance ratio. This type of network is typically used for signal conditioning and data acquisition.

Configuration and Construction

The configuration of the resistor network is determined by the type of application. Multiple resistors are used to create the desired effect, with the value of each resistor chosen based on its resistance value. Some applications require fixed resistors, while others use adjustable resistors. The construction of a network is also an important factor to consider. Networks can be constructed with either point to point connections, circuit boards, or integrated circuit devices.

7681-63153GP-TR13 Application Field and Working Principle

The 7681-63153GP-TR13 is a two-input, two-output resistor network made up of four resistors enclosed in a single surface-mount package. It’s used as a differential amplifier for signal conditioning and digital-to-analog (DAC) conversion. This resistor network offers a wide operating voltage range from +3V to +11V, and its resistor values are factory-calibrated for accuracy. The 7681-63153GP-TR13 resistor network is designed to be used in conjunction with analog-to-digital (ADC), DAC, and multiplexer ICs to filter, drive, and measure signals.

The working principle of the 7681-63153GP-TR13 resistor network is fairly simple. When two identical inputs are applied to the network, it amplifies the differential input by a factor of four. If the two input signals are nonidentical, the amplifier will weight them evenly, but the gain will be reduced. This allows high precision analog signals to be converted from differential to single-ended signals, and aids in driving high impedance loads. The 7681-63153GP-TR13 also features temperature compensation, which helps it maintain a very low level of distortion and noise.

Conclusion

Resistor networks are versatile tools that offer a variety of solutions to signal conditioning, data acquisition, and amplification applications. Different types of resistor networks are constructed with different configurations and can be utilized for various applications, such as the 7681-63153GP-TR13. The working principle of the 7681-63153GP-TR13 is quite simple yet offers excellent performance in high precision signal conditioning, amplification, and driving high impedance loads.

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