Part Number: OPA846
Tool/software:
Hello, I recently started learning about analog circuits, and I am currently designing a simple photodiode amplifier circuit.
The photodiode has a parasitic capacitance of approximately 20pF, and I estimated the…
Part Number: OPA846 HI All , I have designed one Transimpedance amplifier so that it can detect visible light emitted from LED. The LED is being driven using square wave of high frequency (like 1 MHz, 5 MHz) etc . The circuit designed is able to detect…
Part Number: OPA846 Dear TI team,
I have one TIA ckt to be reviewed. I cant share it here. Please share your email ID so that i can DM the ckt & requireemnt details.
Part Number: OPA846 I need to edit this curve, any idea what software created this and perhaps that source file?
Slide 10 in this document,
7532.Transimpedance design flow using high speed op amps.pptx
Hi,
You're seeing the transient pulse because you are using the zero initial conditions setting int he transient simulation. Since the part is starting all values at zero, it is instantaneously seeing a 10nA current that is causing the overshoot. If…
Part Number: OPA846 Background:
I am using an OPA846 in a transimpedance amplifier with ~100 kOhm of gain. There is a resistor equal to the gain resistor connected to the non-inverting input to cancel the DC offset caused by the input bias current.…
And, taking that 3dB peaking at a gain of +7V/V in the OPA846 data sheet to Fig. 2 in that first article says we should have about 42deg phase margin at that condition.
If I drop an OPA846 model into the LG phase margin sims from the 2nd article, +…
Hello Loren,
First of all, thank you for being interested in my question.
My question is about the waveform itself but also the offset. You said that the slew rate is limiting the output, as you could see, the input signal that should be amplified…
See Chapter 11 in attached for op amp specifications and what they mean... OPA846 output swing on +/-5V is about +/-3V. Circuit is scaled for Ipd=0A, OPA846 output = +3V, and Ipd = -12.77uA, OPA846 output = +3V.
Other Parts Discussed in Thread: OPA846 , TINA-TI Hi All, We'd like to ask the measurement of phase margin and gain margin on OPA846. <Question> Please refer to attached file.This is the result of phase and gain simulation using OPA846. 2678.Phase margin…
