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3650隔离放大器的噪声性能改善
消耗积分:3 |
格式:rar |
大小:25 |
2009-06-02
生龙活虎3
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The 3650 is an optically coupled, differential input, isolation
amplifier having programmable gain. Noise for the
3650 is specified to 4mVrms (typ) on the input stage of the
isolation barrier and 65mVrms (typ) on the output stage. The
gain of the 3650 is controlled using external resistors on the
input stage. In low gains, the noise performance of the 3650
is dominated by the output stage noise figure. The noise
performance in high gains is dominated by the input stage
noise. By using two OPA627s as a pre-amp to the 3650
isolation amplifier, the noise performance of the isolation
circuit is greatly enhanced.
amplifier having programmable gain. Noise for the
3650 is specified to 4mVrms (typ) on the input stage of the
isolation barrier and 65mVrms (typ) on the output stage. The
gain of the 3650 is controlled using external resistors on the
input stage. In low gains, the noise performance of the 3650
is dominated by the output stage noise figure. The noise
performance in high gains is dominated by the input stage
noise. By using two OPA627s as a pre-amp to the 3650
isolation amplifier, the noise performance of the isolation
circuit is greatly enhanced.
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