发明名称 |
INFRARED FOURIER TRANSFORMATION SPECTOMETER WITH PLURAL ANALOG-TO-DIGITAL CONVERTERS AND INTERLEAVED AMPLIFICATION FACTORS |
摘要 |
An infrared Fourier transformation spectrometer comprising a non-linear analog-to-digital converter device having at least one amplifier and one sample and hold circuit connected downstream thereof, as well as an an analog-to-digital converter following the latter, wherein an input signal to be converted is to be supplied to one input of the amplifier and the gain of the input signal is a function of the magnitude fo the input signal, and wherein the output signal of the analog-to-digital converter is evaluated giving regard to the respective gain, is characterized by the fact that at least two analog-to-digital converters are provided whose outputs are connected to a first controllable switching arrangement for supplying selectively the output signals of one of the said analog-to-digital converters to another evaulation means and that the input signal is supplied to each of the said analog-to-digital converters amplified by a different amplification factor. This allows to achieve high resolution by simple means.
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申请公布号 |
US5202686(A) |
申请公布日期 |
1993.04.13 |
申请号 |
US19900602172 |
申请日期 |
1990.10.23 |
申请人 |
BRUKER ANALYTISCHE MESSTECHNIK GMBH |
发明人 |
RAPP, NORBERT;BLAVIER, JEAN-FRANCOIS;SIMON, ARNO |
分类号 |
G01J3/453;H03M1/18 |
主分类号 |
G01J3/453 |
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