Candy8866
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analog isolation amplifier
Analog signal data acquisition, Ground interference control, Signal long routed transmits, Equipment and sensor signal acquisition and switching, Electric and medical equipment safe bar.
Signal isolation technology is the current connecting that eliminates the interface between sending end and receiving end while signal transmitting. It allows¡¡the difference between the ground or standard electrical level of sending end and receiving end can be up to thousands of voltage, it also prevent the signal from the current loop on different ground potentials.¡¡The noise from the signal ground may harm to the signal. Isolation Amplifier can separate the signal to a clean signal subsystem ground, isolates the sensor, instrument and meter or control system from the power supply, in order to keep the safety and stability of whole system.
In another case, the electrical connection between standard electrical levels can isolate and form a unsafe circuit gateway to the patients and operators.
Isolation amplifier crosses the barriers relying on no transmitters and receivers. It was used for digital signal before, but due to the linearity problem, the transformer, inter-coupler, capacitor and electric eye were needed to realize the isolation for analog signal.
Analog signal isolation: the analog signal needs to be isolated in many application circumstances. The circuit specifications of analog signal are different from the digital signal.
Usually the analog signal has the requirements for the accuracy, linearity, response frequency and noise firstly.¡¡And then follow up the requirements for power supply. The power supply needs to be high isolation, accuracy, and low noise, especially for the input grade.
¡¡¡¡
As to the interface from power supply noise, the analog signal can escape from it by modulating carrier wave. ISO 4-20Ma current loop interface IC (not powered) simplifies the analog isolation. The input signal is modulated and sent in digital way to across the barrier. The modulated signal is then received by the output part, and converter into analog signal without the ripples that exist in modulating and modulating release process.
Another problem to the signal isolation is the power consumption that the input grade needs; the key problems are input impendence and its own equivalent impendence. And output grade usually regards the enclosure and ground as the standards, the input grade usually is on another electric level. Therefore, the power supply for input grade needs to be isolated by using a single power supply (5V, 12V, 15V, 24V) instead of the Positive-Negative dual power supply.
Application Theory:
Being tested many times, the products can meet the expectation. See the graphs below:
Graph 1: Theory of Isolation Amplifier Modules.
Analog signal data acquisition, Ground interference control, Signal long routed transmits, Equipment and sensor signal acquisition and switching, Electric and medical equipment safe bar.
Signal isolation technology is the current connecting that eliminates the interface between sending end and receiving end while signal transmitting. It allows¡¡the difference between the ground or standard electrical level of sending end and receiving end can be up to thousands of voltage, it also prevent the signal from the current loop on different ground potentials.¡¡The noise from the signal ground may harm to the signal. Isolation Amplifier can separate the signal to a clean signal subsystem ground, isolates the sensor, instrument and meter or control system from the power supply, in order to keep the safety and stability of whole system.
In another case, the electrical connection between standard electrical levels can isolate and form a unsafe circuit gateway to the patients and operators.
Isolation amplifier crosses the barriers relying on no transmitters and receivers. It was used for digital signal before, but due to the linearity problem, the transformer, inter-coupler, capacitor and electric eye were needed to realize the isolation for analog signal.
Analog signal isolation: the analog signal needs to be isolated in many application circumstances. The circuit specifications of analog signal are different from the digital signal.
Usually the analog signal has the requirements for the accuracy, linearity, response frequency and noise firstly.¡¡And then follow up the requirements for power supply. The power supply needs to be high isolation, accuracy, and low noise, especially for the input grade.
¡¡¡¡
As to the interface from power supply noise, the analog signal can escape from it by modulating carrier wave. ISO 4-20Ma current loop interface IC (not powered) simplifies the analog isolation. The input signal is modulated and sent in digital way to across the barrier. The modulated signal is then received by the output part, and converter into analog signal without the ripples that exist in modulating and modulating release process.
Another problem to the signal isolation is the power consumption that the input grade needs; the key problems are input impendence and its own equivalent impendence. And output grade usually regards the enclosure and ground as the standards, the input grade usually is on another electric level. Therefore, the power supply for input grade needs to be isolated by using a single power supply (5V, 12V, 15V, 24V) instead of the Positive-Negative dual power supply.
Application Theory:
Being tested many times, the products can meet the expectation. See the graphs below:
Graph 1: Theory of Isolation Amplifier Modules.
