Patent ID: 6285305
Filing Date: 2001-09-04
Classification: H03M

Abstract:
An analog-to-digital converter circuit comprising:a pre-sample and hold circuit supplied with an analog input signal, said pre-sample and hold circuit temporarily storing said input signal and emitting a temporarily stored input signal;a first signal path and a second signal path connected in parallel downstream from pre-sample and hold circuit and each being supplied with said temporarily stored input signal, said first signal path having a first amplification factor and said second signal path having a second amplification factor different from said first amplification factor;a switch having a first input connected to said first signal path and a second input connected to said second signal path and an output;a level detection circuit for operating said switch to through-connect one of said first signal path and said second signal path to said output of said switch dependent on a signal level in one of said first signal path and said second signal path; andan analog-to-digital converter having an input connected to said output of said switch.