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two signal need to be synchronized ADC?

Question asked by Andydong1583 on Oct 21, 2017

Our requirements:
1, ECG signal (0.01~150Hz);
2, Heart sound signal (20~2KHz);
3, These two signal need to be synchronized ADC;
4, Just ADC these two signals, No need DSP etc;

My thought, these two signal have ADC at the same sample rate (125KHz) and then
downsample the different sample rate.

Two options ADC chips:
1, ADuCM320, It has 16 chs 14bit (1MSPS) ADC;
2, AD7902/AD7367-5;

Can you give me better solution or suggestion?