E-TA2012 T 2DB N1 vs EXB-24AB2CR8X
| Part Number |
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| Category | Attenuators | Attenuators |
| Manufacturer | Nidec Copal Electronics | Panasonic Electronic Components |
| Description | ATTENUATOR 2DB 0805 SMD | ATTENUATOR 2DB 100 OHM 0404 SMD |
| Package | 0805 (2012 Metric) | 0404 (1010 Metric), Concave |
| Series | - | - |
| Package / Case | 0805 (2012 Metric) | 0404 (1010 Metric), Concave |
| Tolerance | ±0.5dB | - |
| Attenuation Value | 2dB | 2dB |
| Frequency Range | 0 ~ 3GHz | 0Hz ~ 2.5GHz |
| Power (Watts) | 63mW | 40mW |
| Impedance | 50 Ohm | 100 Ohms |
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1. What are the uses of attenuators?
The main uses of attenuators include the following aspects:
Adjust the size of the signal in the circuit: The attenuator can reduce the signal strength passing through the attenuator, thereby protecting the receiving device from damage by large signals.
In the comparison method measurement circuit, directly read the attenuation value of the measured network: The attenuator can be used to measure the attenuation value in the circuit to help make accurate measurements and analysis.
Improve impedance matching: In the circuit that requires stable load impedance, the attenuator can buffer the impedance change and ensure the stable operation of the circuit. -
2. Can attenuators reduce noise?
Attenuators can reduce noise, but the specific effect depends on their type and usage scenario.
Basic principles and types of attenuators
An attenuator is an electronic component that is mainly used to adjust the size of signals in circuits and improve impedance matching. It shunts the signal through a special resistive network, absorbs part of the power, and thus reduces the signal level without changing the waveform and frequency characteristics of the signal1. Different types of attenuators have different effects in reducing noise:
Internal attenuator: Usually located in the Amplitude menu of the spectrum analyzer, it reduces the signal level by increasing the attenuation value, but it will increase the noise floor of the spectrum analyzer, resulting in a decrease in the signal-to-noise ratio.
External attenuator: Connected externally to the spectrum analyzer, it can be independent of the internal attenuation setting of the spectrum analyzer, and reduce the noise floor by reducing the signal level without affecting the sensitivity of the test. -
3. What is the attenuator in CRO?
The attenuator in CRO is an electronic component that is mainly used to adjust the size of the signal in the circuit, improve impedance matching, and directly read the attenuation value of the network under test in the comparison method measurement circuit. The attenuator reduces the signal strength by reducing the voltage, current or power of the signal. It is usually composed of a resistor or a thermistor, which converts the energy of the signal into heat energy.
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4. Where are attenuators mainly used?
The attenuator is an electronic component that is mainly used to control the strength or amplitude of the signal and is widely used in various electronic devices and systems. Its main uses include:
Signal conditioning: In communication systems, attenuators are used to adjust the signal strength to ensure that the signal remains within the appropriate range in the subsequent processing stage to avoid overload or distortion.
Power control: In microwave receivers, attenuators are used to control the output power of the local oscillator to obtain the best noise figure and frequency conversion loss and improve the dynamic range.
Impedance matching: By inserting an attenuator in the circuit, the impedance change can be buffered and the impedance matching can be improved.
Equipment protection: By attenuating the input signal, excessive power signals are prevented from damaging the subsequent equipment (such as mixers, amplifiers, etc.) and protecting their normal operation.
Test and measurement: During the test and measurement process, the attenuator is used to control the strength of the measurement signal for accurate evaluation and analysis.
