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Raymond Zhang1
2 months ago
Amplifiers
Amplifiers forum
RE: OPA191: Need similar OPA191 solution with VCOM function
Hi Paul, can OP191 use non-symmetrical power source? Yes, it will work fine. Below is the power rail and Vcm and Vout swing requirements. /cfs-file/__key/communityserver-discussions-components-files/14/
OPA191
-Vcm-input-range-11232020.TSC If...
Paul Yeh
5 months ago
Amplifiers
Amplifiers forum
OPA191: To double checking customer's circuit
TI Thinks Resolved
Part Number:
OPA191
Hi my customer design
OPA191
and need us to double check is their schematic ok or not. Please help to check. Atfirst, the AI side input signal voltage range is +/-5V and the
OPA191
output should become 0~5V voltage range, so...
Thomas Kuehl
over 1 year ago
Amplifiers
Amplifiers forum
RE: OPA191: EMI Rejection
Kato-san, The
OPA191
input EMI filter is a first-order, RC differential/common-mode that comes about from the added series resistance and junction related capacitances in the input circuits. Datasheet Figure 60 shows a simplified circuit diagram showing...
Tamara M Alani
over 1 year ago
Amplifiers
Amplifiers forum
RE: is there any suggested part to replace FP701KR-LF?
Hi Aki, We actually don't have any amplifiers with integrated voltage references. Take a look at our
OPA191
: 36V, high-precision, rail-to-rail input/output, low input bias current, low power, 2.5MHz operational amplifier. If this doesn't look...
Rocketman46
over 2 years ago
Amplifiers
Amplifiers forum
OPA191: Negative voltage input threshold.
Resolved
Part Number:
OPA191
Hi, I am just about to use the
OPA191
IDBVT op-amp as a non-inverting amplifier
Raymond Zhang1
9 months ago
Amplifiers
Amplifiers forum
RE: OPA189: Using opamp to create a precision negative voltage reference. Can opamp drive decoupling caps?
Hi Brett, Enclosed is
OPA191
with 300Ohm load and 1uF capacitor. It looks stable with square wave. As you can see, the BW of the circuit is reduced significantly. /cfs-file/__key/communityserver-discussions-components-files/14/
OPA191
-_2D00_1_5F00_7V...
kai klaas69
over 2 years ago
Amplifiers
Amplifiers forum
RE: OPA191: Voltage at -Ve Input Terminal drops below Gnd on 20V single supply
Hi Rob, hmm, -2.5V at the -input of
OPA191
does not sound good. I would try to clamp this pin with a small current Schottky diode like the BAT54 or similar. Kai
Marek Lis
2 months ago
Amplifiers
Amplifiers forum
RE: About small input bias offset voltage Op Amps (chopper noise).
Below please see my answers: Q1. The chopper noise comes from the input current spikes generated by closing/opening of the front-end switches at the chopper op amp input terminals. In a follower configuration there is no conversion of the current spikes...
Brett Gidge
9 months ago
Amplifiers
Amplifiers forum
RE: OPA192: In-Loop Compensation Inverting Opamp configuration to create a precision -1.7V reference
Note, there is an
OPA191
in my schematic because that was my initial choice. I'm leaning towards the OPA192 instead. I'm not married to it yet if you have a better option. It needs to be very low offset, low noise and capable of driving the current...
Michael Steffes
5 months ago
Amplifiers
Amplifiers forum
RE: OPA4191: OPA4191 in Filter Dezign Tool
Most of these filter programs will cheerfully deliver math based solutions calling for elements that will introduce other issues (high R's can cause noise and phase margin issues) will Q's > than say about 6 will require RC precision you can't...
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