发明名称 |
WIDEBAND AMPLIFIER CIRCUIT HAVING AUTOMATIC GAIN AND OFFSET VOLTAGE CONTROL |
摘要 |
A wideband amplifier circuit having automatic offset voltage and gain control, the circuit comprising a main amplifier chain, a negative feedback loop for controlling gain, and a negative feedback loop for controlling and cancelling any possible offset voltage at its output, said main amplifier chain including a gain control amplifier block having a gain control input connected to the gain control negative feedback loop; wherein the gain control amplifier block is preceded in the main chain by a symmetrizer-adder block of fixed gain having a first input constituting the input of the amplifier circuit and a second input connected to the negative feedback loop for controlling and cancelling any possible offset voltage at the output.
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申请公布号 |
US5218320(A) |
申请公布日期 |
1993.06.08 |
申请号 |
US19920893805 |
申请日期 |
1992.06.04 |
申请人 |
ALCATEL N.V. |
发明人 |
ALBOUY, PIERRE;COCHENNEC, GUY |
分类号 |
H03F3/34;H03G3/20;H03G3/30 |
主分类号 |
H03F3/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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