What is digital step attenuator?
What is digital step attenuator?
A digital attenuator, unlike variable attenuators, switches in discrete and finite attenuation states. This switching is usually achieved in binary steps. Digital attenuators employ semiconductor devices to achieve each attenuation step.
What is analog attenuator?
Analog Devices’ attenuators are available in a broad range of architectures and form factors, giving designers the flexibility to select a part best aligns with their system requirements. The parts are designed for the lowest insertion loss and best accuracy in the specified frequency range.
How does a digital step attenuator work?
When all bits are selected, a digital attenuator provides its maximum rated attenuation; when only the LSB is selected, it provides its minimum attenuation step. The lower the temperature variation and the higher the accuracy, the smaller the minimum attenuation step can be, like 0.5 dB in Super RF CMOS Attenuators.
What is programmable attenuator?
An attenuator is an electrical component that reduces the amplitude of a signal passing through it without significantly degrading the integrity of that signal. In a programmable or step attenuator, the attenuation is controlled externally by an external analog or digital signal, either manually or via a computer.
How does RF attenuator work?
RF attenuators reduce the strength of an RF signal. RF attenuators are essentially electrical resistors that are put in line with an RF signal and reduce the signal strength by converting some amount of RF energy into heat. The amount of resistance used is what determines the amount of attenuation.
What is a DSA RF?
pSemi UltraCMOS® RF Digital Step Attenuators (DSAs) offer flexibility and performance for wireless and broadband infrastructure equipment, LMRs, test-and-measurement equipment, and military RF applications.
What is a cable attenuator?
A coaxial attenuator is an electronic device specifically designed to reduce the power of a signal without affecting or reducing the waveform of the signal significantly. An attenuator works exactly opposite of an amplifier which increases the power of the signal without altering the waveform.
What is RF attenuator?
RF Attenuators are components that reduce the amplitude level of an incoming signal. They are used to protect systems from receiving a signal with a power level that is too high to process. everything RF has listed RF attenuators from over 100 manufacturers – You can filter the results based on your requirements.
How do I choose the RF attenuator?
Attenuators should be able to handle required power safely. In best practice, it is recommended to pick one with higher power handling capability than your required power. It is good to have an attenuator with better heat dissipation if the application requires handling high power especially in hot environments.
What is a voltage variable attenuator?
A voltage variable attenuator is an electronic device that provides a variable attenuation depending on the voltage applied. The voltage applied to the device controls the attenuation of voltage variable attenuators.
Why choose an analog attenuator?
Analog Devices provides a range of broadband IC digital attenuators that come in low cost, leadless surface mount packages. Our digital attenuator family offers excellent attenuation and includes off chip ac ground capacitors for near dc operation, making it ideal for an extensive number of RF and IF applications.
What are the characteristics of digitally controlled programmable attenuators?
Digitally Controlled Programmable Attenuators. Broadband frequencies ranging from 30 MHz to 40 GHz. High attenuation levels up to 60 dB. PIN diode designs exhibit extremely fast attenuation step switching performance. Attenuation step size ranges from 0.03 dB to 1 dB.
What type of attenuator is used for CATV?
MACOM’s attenuators are used in a variety of applications for automotive and wireless markets, including 75 Ohm versions for CATV. We offer serial and parallel logic controlled digital attenuators and voltage variable analog attenuators (VVAs) that range from DC to 40GHz.
How many bits are in a programmable attenuator?
Our programmable attenuators have integrated TTL driver logic control bit circuitry that ranges from 5 to 10 binary bits depending on the model. This number of bits benefits in very precise and linear digital control of attenuation step sizes that can be as low as 0.03 dB to 1 dB maximum over the entire attenuation range.