TS1874IYDT

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Linear amplifiers are electrical components that increase the power of a signal while maintaining the waveform of the signal, as oppose to nonlinear amplifiers which can introduce distortion. Instrumentation, OP amp and buffer amp amplifiers perform a variety of functions, ranging from applications in motor control, audio, and data processing systems, to a variety of industrial and medical applications. The TS1874IYDT is a low voltage, low power, linear amplifier which is suitable for ADC/DAC, data acquisition and transmission, LCD driving, and audio level adjustments. This article will discuss the applications and working principle of the TS1874IYDT.

Applications

The TS1874IYDT was specifically designed for use in low noise, low distortion applications with supply voltages less than or equal to 1.8V. As a low voltage, low power device, it can be used in a variety of applications which require highest precision and lowest available noise. Its applications include:

• A/D/Converters: The TS1874IYDT\'s low current consumption and high open-loop gain results in it being ideal for 8-16Bit A/D/Converters.
• Data Transmission: The amplifier\'s low output offset voltage and common-mode rejection enable it to be used in precision data transmission applications.
• Audio Level Adjustments: The device integrates ESD-Vref and is suitable for adjustable audio level applications.

Working Principle

As a linear amplifier, the TS1874IYDT is designed to increase the power of a signal while preserving both the frequency response and relative strength of the signal’s original waveform. It uses an open-loop voltage amplifier circuit to increase incoming voltage signals. The amplifier is configured with input and output ports where an input signal is amplified and heard at the output. The amplifier requires a minimum amount of current (IdB) to bias the input transistors. As the current passes through the circuit, it divides about Hfe (the voltage gain or ‘transimpedance’) into the output port. As the output voltage is increased, IdB is slightly increased to ensure the ventre senses the change and can be used to further modify the gain. The final gain is determined by the value of HFH and the ratio of Vref/Vm.

The TS1874IYDT integrates ESD protection and Vref capability which greatly improving their performance in low current operations. The ESD protection circuit blocks voltage spikes which can damage the silicon and preventable current flow. The ESD protection circuit also prevents device latch-up which may render a system unusable. The TS1874IYDT also contains a precision voltage reference circuit which ensures the voltage at the input and output ports is set to a constant reference voltage. This ensures accuracy of the output signal, even when the input voltage fluctuates.

Conclusion

The TS1874IYDT is a low voltage, low power linear amplifier which is suitable for ADC/DAC, data acquisition and transmission, LCD driving, and audio level adjustments. It is designed for applications with supply voltages less than or equal to 1.8 Volts and features ESD protection and Vref implementation. As a linear amplifier, the TS1874IYDT increases incoming voltage signals while preserving the waveform of the input signal. This makes it ideal for applications ranging from motor control, audio, and data processing systems to a variety of industrial and medical applications.

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