Hi,
I am planning to use DAC38J82 DAC part maximum 2.5Gsps sampling rate.
The above part is a dual channel DAC.
I want to use one channel DAC output.
In the Data sheet it is mentioned that there are four 16 bit DACs are present i.e. A, B, C & D.
We need to select 2 out of 4 DAC IF output by the output Multiplexer.
In data sheet it is mentioned that the MUX selection can be configure by pathx_in_sel.
patha_in _sel: 00; This selects the 1st word used for the path A input
pathb_in _sel: 01; This selects the 2nd word used for the path B input.
pathc_in _sel: 10; This selects the 3rd word used for the path C input
pathd_in _sel: 11; This selects the 4th word used for the path D input
patha_ out_sel: 00; Data path A goes to the DAC_A output.
pathb_ out_sel: 01; Data path B goes to the DAC_B output.
pathc_ out_sel: 10; Data path C goes to the DAC_C output.
pathd_ out_sel: 11; Data path D goes to the DAC_D output.
This seems as below
1st sample in Data path A--------------> DAC_A output
2nd sample in Data path B--------------> DAC_B output
3rd sample in Data path C--------------> DAC_C output
4th sample in Data path D--------------> DAC_D output
In the above case we can select all 4 channels at a time. But why in data sheet it is mentioned that at a time only 2 channels can be selected from the 4 DAC output.
Kindly suggest how to select 2 DAC IF ouput out of 4 ?
Regards
Soumya
