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9 Threads found on Cmos Sensitivity
Hi guys, I have designed a simple sawtooth generator. However, after doing the layout and extracted the parasitic capacitance and resistors I found that the sawtooth frequency as decreased. Well, this makes sense of course. However I am afraid that I could have done a bad layout. I say this because, from what I have been taught and from what
Hi! One of the most unclear questions about cmos process for me are 1) Which operations are the most sensetive for contamination? Is it forming of gate oxyde & gate itself - so that minimum contamination is just above and below gate oxide... ? 2) What is acceptable level of contamination and which are the usual sources of such contamination in
I believe, that some comments are appropriate: * For two ideal complementary transistors the transition from high (VDD) to low output level occurs at a common input voltage of VDD/2. The midpoint of this "quasi-linear" transition region also is at VDD/2. Therefore, a feedback resistor Rf between output and common input creates the correct bias (wh
I agree, that the unregulated DC/DC converter can be a problem, particularly because the sensitivity of the GM tube depends on the HV level. The logic ICs are standard cmos, I guess, and can manage an even higher supply level. A LDO regulator, e.g. LP2985-5.0 or -5.3 should do the job. It has only a low mV dropout voltage and a moderate current
On all the other websites he is using a low voltage rail-to-raill cmos opamp that has no input bias current. I think the preamp should have most of the gain and that the Sallen and Key active Butterworth lowpass filter should have equal-component-values and a gain of only 1.6.
The Philips 8XC451 is an I/O expanded single-chip microcontroller fabricated with Philips high-density cmos technology. Philips epitaxial substrate minimizes latch-up sensitivity. The 8XC451 (includes the 80C451, 87C451 and 83C451) is a functional extension of the 87C51 microcontroller with three additional I/O ports and four I/O control lines for
Do you have some lit. about low frequency, high sensitivity receiver chains in cmos?
For WLAN where you do not have big blockers the lna can have a lot of gain so the noise figure can be low. At 0.18um cmos a NF of 1.5dB is fesable. The input network Q will be high which can effect linearity as well as component variation sensitivity.
Why 5V for Std. TTL (ex: 7400) and 15V for cmos (ex: CD4001) as VCC. What are the factors which actually determines the supply voltage for each familes. Any idea ? Regards Itp