August 2012
Intermediate to advanced
608 pages
17h 15m
English
Content preview from The Design of Active CrossoversBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 18
Power Supply Design
“We thought, because we had power, we had wisdom.” Stephen Vincent Benet: Litany for Dictatorships, 1935
18.1 Opamp Supply Rail Voltages
Running opamps at ±17 V rather than ±15 V gives an increase in headroom and dynamic range of 1.1 dB for virtually no cost and with no reliability penalty. This assumes that the opamps concerned have a maximum supply voltage rating of ±18 V, which is the case for the old Texas TL072, the new LM4562, and many other types.
The 5532 is (as usual) in a class of its own. Both the Texas and Fairchild versions of the NE5532 have an Absolute Maximum power supply voltage rating of ±22 V (though Texas also gives a “recommended supply voltage” of ±15 V), but I have never met any attempt to ...
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