LME49713MA/NOPB

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The LME49713MA/NOPB is an operational amplifier (op-amp) from Texas Instruments with an instrumentation amplifier built-in. It is designed for use in both high-performance and low-power applications. It provides wide bandwidth, high accuracy, and low noise performance.

The device supports very high one-way gains, which makes it ideal for precision instrumentation. It allows for a wide range of gains to be set, thus allowing the user to match the signal level to the ADC resolution in the system. The device also offers low-power consumption, making it suitable for battery-powered applications.

The LME49713MA/NOPB’s input common-mode and supply-voltage rejection ratio (CMRR/PSRR) combination makes it suitable for use in dynamic environments where noise and other interference may be present. This makes it a perfect choice for instrumentation and medical applications. The device is also designed to provide low total harmonic distortion (THD)—as low as 80 dB at 10 kHz—while maintaining low noise performance.

In terms of its working principle, the LME49713MA/NOPB amplifies the difference in the voltages on its two inputs. This voltage difference is then externally adjusted or buffered, if necessary. The external adjuster voltage is typically the same voltage that is supplied to the power supply of the amplifier. It is determined by the gain that is desired from the amplifier.

In order to control the gain of the amplifier, the external adjuster voltage is adjusted. This is done by using a resistive divider which consists of two resistors. The divider is connected to the output of the amplifier, and by increasing or decreasing the resistance of the divider, the gain of the amplifier can be adjusted. This helps to effectively control the gain and the distortion of the amplifier.

The LME49713MA/NOPB is also designed to reduce noise, and it features a special circuit called a Load Line Control. This type of circuit ensures that the power dissipated by the amplifier is controlled, thereby reducing peak current levels, which results in lower distortion and improved frequency response. This is particularly beneficial for applications such as medical imaging and audio.

In addition, the LME49713MA/NOPB is a self-biasing amplifier, which eliminates the need for an external bias circuit and makes the amplifier suitable for use in multiple supply voltage applications.

Overall, the LME49713MA/NOPB provides excellent performance when it comes to instrumentation, medical, and audio applications. With its high CMRR/PSRR, low noise, low THD, and low power consumption, it is a perfect choice for any application that requires precise and reliable performance.

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