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LM148QML: Maximum Output swing voltage

Part Number: LM148QML
Other Parts Discussed in Thread: LM148, UA741

Dear Sir,

we are using LM148 in our project and we are facing output swing issue.

  It is simple inverting amplifier with resistor value 500KOhm with 100kOhm load and supply voltages +/- 11V.

Case 1 : I/P DC voltage -11V output is 10.3V

Case2 : I/P DC voltage 11V output is -8.7V... output is saturating at -8.7V

Please guide me to resolve the issue.