THS3115IPWPG4

THS3115IPWPG4 is an instrumentation amplifier that is designed to be used in both low and high side output current sensing. This device is specially designed to provide an extremely wide range of DC precision gain, while allowing complete flexibility to the system designer. It provides extremely low amount of input offset voltage, ensuring accurate readings in both low range and high range applications. Furthermore, its architecture provides an output linearity that is unattainable with other devices in its class.

The typical application of THS3115IPWPG4 is for DC current sensing. With its adjustable gain, it can be used to limit the output current to a specified value, or to measure the voltage drop across external sensing resistors, or to measure power. It can also be used in precision instrumentation, such as motor speed control, temperature control and load monitoring applications.

THS3115IPWPG4 operates on a dual-stage compensation architecture, which inherently eliminates offset and drift errors. This architecture provides stable gain and high output linearity over a wide range of supply voltages and temperatures. The dual-stage compensation provides excellent gain accuracy and long-term environmental stability. It also eliminates the need for manual trimming or adjustment. In addition, the THS3115IPWPG4 operates over a wide temperature range. It is designed to operate over a full -40 to +125℃ temperature range.

THS3115IPWPG4 is also designed to minimize power consumption. It allows system designers to reduce the operating current, improving system performance and power efficiency. The power dissipation can be further reduced by programming the gain for higher output current. The typical low supply current (other than the output current) is less than 3 mA.

The working principle of THS3115IPWPG4 is based on the high side current sense sample and hold (CSMH) amplifier and two gain stages. The CSMH amplifier acts as a sample and hold element, capturing the current flowing from the high side load. The outputs from the CSMH amplifier and the two gain stages are then combined to produce a common output sense voltage. The output sense voltage is then amplified using the user adjustable gain to provide the regulated output current. The input common mode range supported by the device is 0 to 100V, allowing the amplifier to be used in both low and high side output current sensing applications.

In conclusion, THS3115IPWPG4 is a versatile instrumentation amplifier designed to be used in low and high side output current sensing applications. It provides accurate readings through its low input offset voltage and dual-stage architecture. Furthermore, it is designed to reduce the power consumption while the adjustable gain provides system designers with flexibility.