SA620DK,112

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Frequency:	800MHz ~ 1.2GHz
P1dB:	16dBm
Gain:	11.5dB
Noise Figure:	1.3dB ~ 1.9dB
RF Type:	Cordless Phones, UHF
Voltage - Supply:	2.7 V ~ 5.5 V
Current - Supply:	10.4mA
Test Frequency:	900MHz
Package / Case:	20-LSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-SSOP

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RF AmplifiersThe SA620DK-112 is a radio frequency (RF) amplifier that is designed for linear operation in high sensitivity and low noise applications. Its primary purpose is to amplify a low level signal while maintaining its low distortion and low noise characteristics. The amplifier also offers high power operation in a small package, enabling it to be used in many applications such as receivers, transceivers, and specialised wireless systems. In this article, we will examine the application fields and working principle of the SA620DK-112 RF amplifier.Application fieldsThe SA620DK-112 is optimised for use in a variety of applications, including digital communication systems, receivers, transceivers, low power amplifiers, and base station transmitters. It can also be used for gain control in linear and non-linear amplifiers, and is suitable for low noise amplifier and mixer applications. The amplifier\'s high efficiency and low noise characteristics make it ideal for low power applications, making it suitable for use in battery-powered applications.Moreover, it is suitable for use in wireless systems such as FM receivers, RF repeaters, cellular systems, cordless phones, and ZigBee radios. As it is designed for low distortion, it is also well suited for use in applications such as high fidelity audio systems.Working principleThe SA620DK-112 is a 3-stage amplifier that operates on the principle of stacked amplifiers. In this type of amplifier, each stage amplifies the input signal, increasing its power exponentially, before the output of one stage is fed into the next stage. This type of amplifier offers great linearity, as its gain is related linearly to the power applied to it.The amplifier operates by first amplifying the input signal, followed by a harmonic rejection stage that ensures distortion levels are kept to a minimum. The signal is then sent to a power stage which further amplifies the signal before finally being passed to the output stage. The output stage is designed to provide a low level signal with negligible distortion.The SA620DK-112 amplifier also offers a wide range of gain control, allowing it to be used in applications that require variable gain control. This ensures that the amplifier can be used in both linear and non-linear amplifier applications, as well as in receivers and transceivers.ConclusionThe SA620DK-112 is a radio frequency (RF) amplifier designed for linear operation in high sensitivity and low noise applications. It utilises the principle of stacked amplifiers to achieve high linearity and low distortion levels. The amplifier offers a wide range of gain control, allowing it to be used in a variety of applications, such as receivers, transceivers, low noise amplifiers, base station transmitters, FM receivers, RF repeaters, and cellular systems. Moreover, its high efficiency and low noise characteristics make it suitable for use in battery-powered applications.

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