Multi-channel data acquisition ISO100 isolation circuit of a programmable gain amplifier

Description: The ISO100 multichannel data acquisition system comprises a programmable gain amplifier isolated by an optocoupler, a programmable amplifier (PGA100), and an isolation amplifier (ISO100). The optocoupler selects three channels and is coupled to the programmable gain amplifier, which can select from 23 different signals across three channels. The input signals from the 8-channel data acquisition system are amplified by the PGA100 before being sent to the isolation amplifiers. The output from the ISO100 isolation amplifier ensures effective signal isolation. This circuit design demonstrates excellent anti-jamming performance, making it suitable for noisy applications such as industrial field signal acquisition.

The ISO100 multichannel data acquisition system is designed to enhance signal integrity and isolation in environments with high electromagnetic interference (EMI). The system begins with a programmable gain amplifier (PGA100) that allows for adjustable gain settings, optimizing the signal level for further processing. The optocoupler serves a critical role in isolating the input signal from the output stage, ensuring that noise or voltage spikes from one part of the system do not affect others.

The optocoupler is configured to select among three channels, enabling the system to handle multiple input signals effectively. Each channel can process a selection of up to 23 different signals, providing flexibility in various applications. The output from the PGA100 is then fed into the isolation amplifiers, specifically the ISO100, which further isolates the amplified signal from the following stages of the circuit.

The ISO100 isolation amplifier is known for its high common-mode rejection ratio (CMRR), which minimizes the impact of noise and interference on the output signal. This characteristic is particularly advantageous in industrial environments where signals are often contaminated by electromagnetic noise. The design of the circuit ensures that the final output retains the integrity of the original signal, making it suitable for applications that require precise data acquisition.

In summary, the ISO100 multichannel data acquisition system is a robust solution for signal acquisition in noisy environments. Its combination of programmable gain amplification, channel selection via optocouplers, and effective isolation amplifiers allows for reliable and accurate data collection in challenging conditions. As shown in FIG grounds ISO100 multichannel data acquisition system consisting of a programmable gain amplifier isolation by optocoupler, programmable amplifier PGA100 and isol ation amplifier ISO100 composition. Optocoupler will select three channels and three-way choice coupled to the programmable gain amplifier, three channels select the optional 23 8 signals. 8-channel data acquisition system input signal after amplification by the PGA100 choose to output isolation amplifiers, after ISO100 isolation amplifier output.

As a result of a variety of isolation, the circuit shown in FIG excellent anti-jamming performance for noisy applications (such as industrial field signal acquisition).