AD8309ARU

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Logarithmic Amplifier
Applications:	Receiver Signal Strength Indication (RSSI)
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	AD8309

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AD8309ARU Application Field and Working PrincipleThe AD8309ARU is a specialized linear amplifier designed for some very specific applications. It is a general-purpose linear-gain amplifier with exceptionally low-noise, good linearity and minimal external trimming. It is an integrated analog amplifier that provides an extremely clean signal with low distortion. In addition, it is well suited for use in harsh environments such as extreme temperatures. This amplifier is ideally utilized in applications that require an amplifier with low-noise performance. The AD8309ARU can be used in a wide range of applications such as wide band signal transmission and industrial signal measurement systems. It has a typical gain bandwidth of 70MHz and can operate up to a maximum frequency response of 550MHz. The amplifier is also capable of being powered up to a positive supply voltage of +32V. The working principle of the AD8309ARU relies on the use of several components working together to produce a clean, low-noise signal. The AD8309ARU consists of an input stage, an intermediate gain stage, a summing stage, and an output stage. The input stage consists of an AC coupled differential input, consisting of two matched transistors. The transistors are matched to provide low-noise performance with a wide input dynamic range. This also improves the linearity of the amplifier. The gain and frequency response of the amplifier is set at the intermediate gain stage, which consists of a differential amplifier using two hysteretic transistors. The hysteretic transistors provide a high gain, flat input frequency response, and low distortion. The summing stage is the next stage of the amplifier, where the inputs to the intermediate gain stage are added together. This stage is designed to cancel out the noise and distortion components in the signal. Lastly, the output stage is the last part of the amplifier, which is responsible for providing the appropriate output voltage. The output stage is comprised of a bipolar transistor, which is used to generate the output voltage. The AD8309ARU is a specialized linear amplifier designed for some very specific applications. It has a typical gain bandwidth of 70MHz and can operate up to a maximum frequency response of 550MHz. The amplifier is also capable of being powered up to a positive supply voltage of +32V. It relies on several components working together to provide a clean, low-noise signal. The AD8309ARU is ideally utilized in applications that require an amplifier with low-noise performance, such as wide band signal transmission and industrial signal measurement systems.

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