Part Number: OPA4991 Tool/software: Hi Folks,
I'd like to understand the proper way of simulating the input impedance to an Amplifier circuit (Specifically an OPAx991) where the reference node is not GND but rather the non-inverting input. Here's the…
Part Number: OPA4991 Hi Folks,
Has anyone ever examined using 2 channels of an OPA4991 to create a quasi-log amplifier for TIA applications?
Sort of like this:
Curious if anyone has previously explored this?
Thanks,
-Chris
Part Number: OPA4991
Hi
24V passes through the 4mA constant current tube and resistor to the in-phase output end of the op amp. 4mA current flows to +15v of the op amp. The current cannot return to +15V. Could you please help confirm the cause
Thank…
Part Number: OPA4991 Hello
I was going thru' the new Op Amps, especially the Quads.
OPA4991 caught my eye, and while going thru' the Data Sheet
on page 36 the following appears:
The OPAx991 is featured in several TI Precision Designs, available…
Part Number: OPA4991 Hi, I want to use OPA4991 as an inverter amplifier. In the datasheet recommended operating voltage is +4.3V while absolute maximum is +5.5V. We want to use +/-5V, but we have concerns like if it will burn the opamp at some point whether…
Part Number: OPA4991 Other Parts Discussed in Thread: OPA4310 HI SIR
Now, i use the OPA4991 in my circuit,but I need a Isc more than 100mA in other application
Did you have any advise?
thanks?
Part Number: OPA4991-Q1 Other Parts Discussed in Thread: OPA4991 Hello,
I am designing OP AMP circuit that circuit uses OPA4991-Q1.
I will use OPA4991-Q1 for voltage follower circuit under below conditions.
IN+ pin : Connect 4/5 voltage divider resistors…
Part Number: OPA4991-Q1 Hello, I cannot work out what the difference between the OPA4991TQPWRQ1 and the OPA4991QPWRQ1. The difference is that a T has been added after the 4991. I have been through the whole datasheet multiple times and not seen any explanation…
Part Number: OPA4991 Other Parts Discussed in Thread: TINA-TI Hi Team,
Our customer simulated the OPA4991 sinewave generator circuit and noticed some glitches in the waveform. The supply voltage are +/-5V. Please see the schematic diagram and waveform…