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LINEAR_IC_TESTER

2017-03-09 22:36  
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LINEAR_IC_TESTER
Basic lab tester circuit displays transfer function, offset voltage, gain, linearity, and output voltage swing on single scope trace. High-gain null opera tional amplifier (such as Fairchild 709 IC) is used in feedback loop around linear integrated-circuit amplifier under test, to hold output of amplifier under test at zero by adjusting its d-c input voltage to equal the offset. Chopper on vertical scope inputs allows simultaneous display of offset voltage and transfer function, by switching in synchronism with horizontal sweep. Separate TO-5 socket is provided for each type of integrated circuit to be tested.-J. N. Giles, How to Measure Linear-IC Performance, EEE, 14:8, p 62-68 and 161.