LT1723IMS8#PBF

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The LT1723IMS8#PBF is a linear amplifier used in instrumentations, operational amplifiers, buffers, and amplifiers. This chip is a precision, low-noise operational amplifier with guaranteed 3V, 10V and 18V overdrive performance and 400µA supply current. It is available in an 8-pin PDIP (plastic dual in-line package) for applications where wide supply voltage and moderate speed are critical requirements.

Description

The LT1723IMS8#PBF features differential input and output (available in 8-pin PDIP packages) and is designed for low-power and low voltage applications, including automotive and industrial systems. It has a high common-mode rejection ratio of greater than 92 dB, and its output-voltage stress of -3 V to +3 V is lower than the maximum supply voltage. The LT1723IMS8#PBF includes a 5 mA unity-gain-stable amplifier, which eliminates any need for external frequency compensation. With a single 4.5 V and 10 V supply, the chip can achieve an output voltage range of 0.4 V to 3 V.

Features and Advantages

• Low-noise, low power operational amplifier.
• Guaranteed 3V, 10V and 18V Overdrive Performance.
• 400µA Supply Current.
• Distortion Free Performance.
• High Impedance Outputs.
• TTL logic compatible.
• Robust to Variation in Supply Voltage or Temperature.
• Wide Supply Voltage Range.
• Low quiescent Current consumption.
• Noise Free Output.

Applications

The LT1723IMS8#PBF is suitable for a broad range of applications. It can be used in low voltage, low power audio systems such as amplifiers, pre-amps, and audio processors. This chip can also be used in test and measurement applications like signal monitoring, ADC and DAC interfacing, and instrumentation amplifiers. Furthermore, it finds use in automotive applications such as engine control, engine sensors, CAN bus systems, and airbag/restraint control. With its wide supply voltage range this amplifier can also be used in industrial control systems, robotics, motors, and other control systems used in industrial automation.

Working Principle

The LT1723IMS8#PBF utilizes its circuitry to create an input voltage and the output voltage, while maintaining output voltage at the specified level. The input voltage is provided through its inverting and non-inverting inputs. It amplifies the input signals, generating an output current, which is then amplified to create a differentiated output voltage. The two output signals are then compared to produce a differential output voltage corresponding with the difference between the two signals. The output voltage is regulated by an internal Minimum Supply Voltage monitor, and by a regulated maximal output voltage determined by its supply voltage. This enables a more linear transfer from the input voltage to the output voltage. Furthermore, the LT1723IMS8#PBF includes an internal frequency compensation network to prevent the chip from oscillating.

Conclusion

The LT1723IMS8#PBF is an operational amplifier intended for low-noise, low power applications. It utilizes its circuitry to amplify input signals and compare the differential output to create a linear transfer from the input voltage to the output voltage. Furthermore, it is designed to be tolerant to varying supply voltage and temperature, and therefore ideal for use in automotive and industrial systems. Typical applications include audio amplifiers, test and measurement equipment, and industrial control systems.

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