I found ADG1207 suitable for my application. In order to verify the functionality of the entire DAS I need the spice model for the part ADG1207.
Please provide the same..
Thanks for your response. The discussion with You and Joe is much useful.
I have another one doubt to be cleared.
The first figure taken from ADG407 data-sheet.
Whereas, the second figure taken from ADG1207 data-sheet.
ABOUT THE HARDWARE IN BRIEF
I have designed a fully universal 8 channel differential Analog Input Module (Thermocouple,RTD,mA,0-10VDC). All the channels are non-isolated. At the input of each channel there is a common-mode(cut-off = 1kHz)and differential…
Muxes like the ADG1407 have to use larger devices to get the low R_on. Therefore they end up with higher capacitance. In-amps like the AD8253 or AD8221 have very high input resistance, so the on-resistance of the mux in series with the in-amp…
Hi,Circuit note(CN-0345) is an example of multichannel data acquisition system,here there are some questions I want to ask.
1.It says that the maximum sample rate of the system is 1 MSPS in page1, but by calculating the settling time of ADG1207,AD8251…
Hi Oliver, Harry & Matt,
Thank you very much for your responses.
Thanks for your comment on input bias current and the selection of Opamps. Unfortunately, the opamps mentioned by you having either higher input OFFSET and input offset current…
Circuit note(CN-0345) is an example of multichannel data acquisition system,here there are some questions I want to ask.
I am on the verge of completion of an 8-channel analog input module design. Each channel can measure RTD Pt-100, Thermocouple (J,K,R,S,T,B,N),0-10VDC and 0-20mA input types. A 24VDC external supply can power this module. I have used an…
I am working on differential Multi-channel high precision DAS. I have chosen the following architectures.
Spec: CMRR - >=50dB @ 0 to 1Khz
Gain Error - 0.02%
AAF --> MUX --> IA --> Post amplifiers --> ADC