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Hi Chen,
We don't have any high speed ADCs with input voltage of +/-10V. We have some older ADCs that have up to 5Vpp input range and newer ADCs are typically 2-3Vpp inputs so you would need to design the input signal chain to handle the higher voltage. I'd recommend the ADC3643 (14-bit, 2ch, 65MSPS, Parallel CMOS, 2.25Vpp input) as our latest option.
hi sir
If we want to use the ADC3643, But the vin range is +/-10V, did you have any solution to solve it,thanks
Hi Chen,
Do you plan to DC couple as well?
Typically what is done in these applications with very high input range, eg - +/-10V.
Is the attenuate the input signal first, then use an amplifier in the lowest gain setting possible to couple into the ADC.
If you don't need to DC couple the signal, then you can use the same signal chain line up but use a balun or transformer.
Signal Chain line up:
attenuation pad -- amp/transformer - ADC
Regards,
Rob
Hi Rob
need the DC couple, did you have any attenuate signal circuit? input frequency 1MHz
thanks
Hi Chen,
Simply use a resistive pad to attenuate the signal before the amp.
see link below....
www.electronics-tutorials.ws/.../pi-pad-attenuator.html
Regards,
Rob