AD9250
Recommended for New Designs
The AD9250 is a dual, 14-bit ADC with sampling speeds of up to 250 MSPS. The AD9250 is designed to support communications applications where low cost,...
Datasheet
AD9250 on Analog.com
ADA4930-1
Recommended for New Designs
The ADA4930-1/ADA4930-2 are very low noise, low distortion, high speed differential amplifiers. They are an ideal choice for driving 1.8 V high performance...
Datasheet
ADA4930-1 on Analog.com
Hi, I'm running simulation for ADA4930 model already available on LTSPICE (XVII). The purpose is to feed differential output to ADC, AD9250, that supplies the Vocm of 0.9V.
The scheme is just single input sinus of 2Vpp, 5V supply, 0.9Vocm, gain G=1 with Rf and Rg = 301ohm, and no input impedance matching for now in order to simplify the analysis. I get the following :
I got the following, in red Vin=2Vpp, blue Vout+ and in green Vout-.
I don't understand why Vout+ and Vout- are clipped at Vout+min = 0.6V and Vout-max = 1.2V. The output range from the datasheet is well between the 0,18V to 3.38V output voltage min and max voltages recommended, Vpp max is 2V, and Vocm must be between 0.3 and 2.8V.
So to me here everything should be ok, why are these outputs clipped ?
Thanks
Hi Rleduc ,
Good day. Can you share with us your schematic diagram? I have tried it using a certain configuration and the output does not clip in this circuit:
Regards,
Gilbeys
Hi Rleduc ,
Good day. Can you share with us your schematic diagram? I have tried it using a certain configuration and the output does not clip in this circuit:
Regards,
Gilbeys