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Op-Amps that Do and Don't Phase Reverse
What is Phase Reversal?
Phase reversal happens when the input signals exceed the common-mode input
range and negative feedback turns into positive feedback. The result is
that the output of the op-amp latches on to one of the rails and stays there
until power is removed.
Op-Amps That Do - BEWARE!!!
| Op-Amp |
Manufacturer |
Notes |
|---|
| OP-77 |
Analog Devices/PMI |
"Improved" OP-07 (see below) |
| OP275 |
Analog Devices |
Only in non-inv circuits, can be fixed with a resistor in the pos.input line. |
| TL07x, TL08x |
TI, National Semi |
Popular, low-cost single (1), dual (2) and quad (4) opamps. |
| LF412 |
National Semi |
Popular low offset, low drift dual JFET op-amp |
| LF353 |
National Semi |
Wideband dual JFET op-amp |
| AD712 |
Analog Devices |
Enhanced replacements for TL082 and LF412 |
| AD713 |
Analog Devices |
Quad version of AD712 |
| LM324 |
National Semi |
Robust and cheap, designed
for unipolar supplies |
Op-Amps That Don't
| Op-Amp |
Manufacturer |
Notes |
|---|
| uA741 |
(many) |
But, it's a 741... |
| 1458 |
(many) |
Dual 741 in DIP8 |
| OPA-07 |
Analog Devices/PMI |
But, it's as slow as 741 |
| OP-07 |
Analog Devices/PMI |
See above |
| OPA132 |
Burr-Brown |
Low noise/distortion |
| OPA134 |
Burr-Brown |
Very low noise/distortion |
| OPA277 |
Burr-Brown |
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| LT1055 |
Linear Technology |
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| LT1637 |
Linear Technology |
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Note
This information is provided "as-is". If you find an error please let me know.
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Copyright © 2001-2021 Neil Johnson
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