I have planned to use AD8638 opamp in my project. Am in need of the spice model for the simulations.
Could anyone help me in getting the spice model for AD8538.
Take a look at the AD8638/8639.
Hi,Can you confirm whether it really is AD8638. AD8638 is a 16 V Auto-Zero, Rail-to-Rail Output Operational Amplifiers whose GBW can only go up to 1.5MHz. Your input frequency is way beyond the op-amps specification, in turn will greatly degrade the output…
Thank you for your suggestion.
another question about AD5791 ( 20 bit DAC ) & AD5541A ( 16 bit DAC )
Which spec is concerned about replace the uni-gain buffer ( AD8638 or AD8639 ) to AD8675 ?
Since the Input offset voltage for AD8638 is 3…
It is functioning well but as temperature changes the drift of output current is also large. So i was looking for an IC which had low offset voltage and drift. Then i came across AD8638, AD4522-2 etc. One doubt which i have is that, in the…
Let's look at the circuit first and do some thought experiment. R1 and R2 forms a voltage divider that is 2 to 1 ratio. So, the inverting input of the amplifier will see (2/3)*VS3. Let's say you have 12V at VS3, the max voltage you…
during evaluation of AD8638 I experienced a higher than expected biascurrent.
The device was (accidently) out of regulation with:
- inverting input at 0V
- noninverting input at -2V
- Powersupply was +-6.7V
In this situation there was…
没问题，可以的。主要看offset和bias current，AD8638的offset很低，bias current为pA级。