LF356 DATASHEET PDF
Parameter. LF LF LF///B. LF LF Units. Typ. Max. Typ. Max. Typ. Max. Typ. Max. Typ .. This datasheet has been download from. These are the first monolithic JFET input operational ampli- fiers to incorporate well matched, high voltage JFETs on the same chip with standard bipolar. These are the first monolithic JFET input operational amplifiers to incorporate well matched, high voltage JFETs on the same chip with standard bipolar.
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Also, the greater the value of this parallel resistor, the greater the dc gain to the offset and risk of saturation. The thing I like to do is look at the spice file for any further clues, the first thing I notice is this: You could modify the model yourself and make it better if its worth your time.
I tried a few values, and the highest I could go was 40Meg just on the brink of saturation:. For the LF this is spec’d at 10mV and this is being amplified by the huge dc gain of the circuit. This is your circuit: Input port and input output port declaration in top module 2. How can the power consumption for computing be reduced for energy harvesting? What could be the cause of this discrepancy?
I used the LTpsice to simulate the feedback performance of a integrator circuit with op amp LF which is a JFET input op amp but I go strange results datssheet the image below.
At dc, the gain would be about 11 and the offset will produce an output of about 33mV. What I want is the high gain as much as possible at low f and a constant gain at relative high f. datwsheet
The first thing to do is check the datasheet with the model: Let’s take a look. Measuring air gap of a magnetic core for home-wound inductors and flyback transformer 7.
It’s better to share your questions l356 answers on Edaboard so we can all benefit from each others experiences. What is the function of TR1 in this circuit 3. Its offset voltage is listed at uV max on the datasheet they use about 40uV in the LTSpice model and it does not saturate your output in simulation:. It does answer the question and adds some value too, of course imho.
The poles for the second and output stage are probably wrong. Do those plots even look remotely close to you?
I tried a few values, and the highest I could go was 40Meg just on the brink of saturation: LF ic datasheet discussion. Choosing IC with EN signal 2.
LF ic datasheet discussion
CMOS Technology file 1. Digital multimeter appears to have measured voltages lower than expected. Now, this is a method a use sometimes, because it forces the dc operating point datsheet be the same at the input and output this is similar to find the loop gain for stability analysis.
And this is finally the ac response for this setup: I have seen similar issues in the past with LTspice and from my experience it comes down to the dc operating point. Of course, this changes the characteristics of your circuit.