LT1490ACS8#TRPBF

Voltage - Input Offset:	150µV
Base Part Number:	LT1490
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	2 V ~ 44 V, ±1 V ~ 22 V
Current - Output / Channel:	25mA
Current - Supply:	50µA
Series:	Over-The-Top®
Current - Input Bias:	1nA
Gain Bandwidth Product:	200kHz
Slew Rate:	0.07 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LT1490ACS8#TRPBF
The LT1490ACS8#TRPBF is a low-noise, precision Unity-Gain Instrumentation Amplifier from Linear Technology Corporation (LTC). This device excels in multiple applications and is generally used for high-bandwidth, low-noise signal conditioning of sensitive audio and data acquisition signals. The device has provisions for on-board gain switching, easy front-end configuration, and is constructed using a low-noise CMOS process.
Application Field
The LT1490ACS8#TRPBF has output noise of 1.2 μVrms at 1kHz, and its low offset drift of 0.6μV/°C makes it a suitable choice for applications requiring extremely low noise. This device is designed to amplify the input signal while maintaining low noise and distortion levels, achieving a wide bandwidth of up to 32kHz. The LT1490ACS8#TRPBF is therefore ideal for many applications such as instrumentation, audio, biological signal acquisition, transducer amplifiers, low-noise signal conditioning, and motion detection. It also offers high common mode rejection ratio for mixed signal applications involving large DC offsets. In addition, this device has an innovative architecture that reduces power consumption, heat dissipation, and number of external components. This makes it ideal for applications involving battery-powered, portable equipment or thermally sensitive systems.Working Principle
The LT1490ACS8#TRPBF utilizes an advanced four-stage architecture to achieve high precision performance. This architecture comprises of two instrumentation amplifiers, a buffer amplifier, and a unity-gain follower. Each of these stages operate on low-power and low-voltage operation. The instrumentation amplifiers amplify the signal using a differential input configuration that is followed by a buffer amplifier. This buffers the output of the instrumentation amplifiers, further reducing offset and noise while providing the required gain. The buffer amplifier is followed by the unity-gain follower which provides a high impedance driving current source. The input stage of the device is configured to minimize input-referred noise and distortion, making it well suited for low-noise signal conditioning applications. The LT1490ACS8#TRPBF also provides a wide range of gains from unity up to 500, with gain accuracy of 0.5%. Other features include a low supply current of 9mA, low input bias current of 0.1pA, and a high common-mode rejection ratio of 90dB. Overall, the LT1490ACS8#TRPBF is an ideal low-noise amplifier with a wide range of applications and excellent performance metrics. It is designed to offer superior signal amplification while maintaining low power consumption, noise, and distortion levels. Additionally, its innovative architecture simplifies the design process and reduces the number of external components required. Conclusion
In conclusion, the LT1490ACS8#TRPBF is a low-noise instrumentation amplifier designed to amplify sensitive audio and data acquisition signals. It excels in multiple applications such as low-noise signal conditioning of sensitive audio and data acquisition, instrumentation, transducer amplifiers, and motion detection. The device has a wide bandwidth of up to 32kHz and its low offset drift of 0.6μV/°C makes it a suitable choice for applications requiring extremely low noise. Furthermore, it operates on low-power and low-voltage and its innovative architecture reduces power consumption, heat dissipation, and the number of external components required.

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