TLV4314QPWRQ1

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Introduction

TLV4314QPWRQ1 is a highly specified, low-cost, instrumentation amplifier family. The family is comprised of three series, featuring quiescent currents as low as 2.0µA, output current as high as 2.0A, and power dissipation of 4.1W max. All devices feature a low-noise, low-distortion charge-pump that can power the amplifier for transient applications. The family also provides excellent settling time (20µs), high slew rate (100V/us) and low distortion (THD less than 0.001%).

Application Field and Working Principle

Application Field

TLV4314QPWRQ1 is a Linear-Amplifiers-Instrumentation device suitable for a variety of industrial, commercial and consumer applications. It is primarily used as an instrumentation amplifier, amplifier or buffer, with applications such as process monitoring, power conditioning, and audio/video equipment. It is also ideal for compensating voltage and current sensors, as well as filtering, measuring and exhibiting signals. The TLV4314QPWRQ1 can also be used as a standard op-amp in many applications.

Working Principle

The TLV4314QPWRQ1 is an instrumentation amp with a wide selection of gain, accuracy, bandwidth and power considerations. The device is configurable and has two independent outputs, with the voltage gains determined by external resistors. The input offset voltage can be trimmed by external resistors to suit the gain and accuracy requirements and to achieve relative accuracy in the range of 0.2%. The device has a common mode input voltage range of ±75V and an input impedance of 10 8Ω. The output voltage and current capabilities are ±45V, 250mA and ± 30V, 2A, making it suitable for a wide range of applications.

The TLV4314QPWRQ1 has an op-amp configuration with a gain of 1+R1/R2. The external resistors set the gain and can be changed to suit the application. The amplifier uses differential inputs and multiple outputs, allowing signal buffering and the integration of multiple feedback signals. The amplifier can be powered from either a single- or double-ended supply, and the input offset voltage can be adjusted to compensate for errors in the embedded circuitry. The active device is protected by an adjustable current limiting feature which can be set externally.

The TLV4314QPWRQ1 is protected from thermal runaway by a thermal protection circuit. This circuit ensures that the amplifier does not exceed the maximum power or temperature limits. The amplifier also has ESD, CMOS input and overload protection, as well as thermal shutdown protection which triggers when the temperature of the internal components exceeds the maximum operating temperature.

Conclusion

The TLV4314QPWRQ1 is a highly specified, low-cost instrumentation amplifier family. It is suitable for a variety of industrial, commercial, and consumer applications. The device is configurable, with two independent outputs. It features quiescent currents as low as 2.0µA and output current as high as 2.0A. It is ideal for compensating voltage and current sensors, as well as filtering, measuring and exhibiting signals. It is protected from thermal runaway, ESD, CMOS input, and overload, as well as thermal shutdown protection.

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