Is there any successor of obsolete AD1555/AD1556 chipset to convert seismic geophone data into 24 bit samples
You may check the AD7768- an 8/4 Channel 24 bit Sigma Delta ADC and the AD776x family( AD7760/62, 63/64/65) has a sampling rate up to 2.5MSPS, a 24 it Sigma Delta ADC. Please refer to the link. The digital filtering are embedded on both these ADCs.
Thank you for your answer, I will look into the specifications of the
chips you have mentioned.
My target is to find a seismic grade, at least 130 dB SNR/dynamic
range, 24 bit Sigma Delta ADC, with real two channel differential
input, very low noise multiplexed PGA to accept geophone signal. The
maximum sample rate of ADC is 0.25msec and it should contain a digital
(probably FIR) filter, which is capable let us say, to cut 120 dB at
2msec sample rate, between 200 Hz and 250 Hz.
Idézet (jcolao <firstname.lastname@example.org>):
RE: SEISMIC ADC reply from jcolao in /Precision ADCs/ - View the full discussion
RE: SEISMIC ADC
reply from jcolao in /Precision ADCs/ - View the full
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