amin5659
Member level 3
hi every one. i want to build a 0.1 hz to 1mhz sin, triangular, pulse generator with 10vpp adjustable amplitude.
for the first design i used a DAC for generating signal and then used a amplifier for signal conditioning.
the problem is when generating low frequency signal, the signal is corrupted due to the DAC nature.
can i use LPF filter bank for specified frequency range?
for example using 100hz LPF for 0.1hz to 100 hz signal's
1k LPF for 100hz to 1K siganl's
10k LPF for 10hz to 10K siganl's
and ....
or is there simpler way to do that?
i searched foe some dds ic's for the job but this ic's are expensive.
if u know a good/easy to use ic please suggest..
the cost is an important factor to me.
any idea would be appreciated..
thanks
for the first design i used a DAC for generating signal and then used a amplifier for signal conditioning.
the problem is when generating low frequency signal, the signal is corrupted due to the DAC nature.
can i use LPF filter bank for specified frequency range?
for example using 100hz LPF for 0.1hz to 100 hz signal's
1k LPF for 100hz to 1K siganl's
10k LPF for 10hz to 10K siganl's
and ....
or is there simpler way to do that?
i searched foe some dds ic's for the job but this ic's are expensive.
if u know a good/easy to use ic please suggest..
the cost is an important factor to me.
any idea would be appreciated..
thanks