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Old 28th December 2013, 02:09 PM   #1
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Default OPA445 - Alternatives available?

Hi,

is there any more economic opamp available which is comparable to Burr-Brown's OPA445? It should feature FET inputs and an extended supply voltage range.

Otherwise, is there any workaround to give extended output swing to a common, cheap FET input opamp?

Best regards!
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Old 28th December 2013, 02:23 PM   #2
DUG is offline DUG  Canada
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OPA551 goes to +/- 30V

But more output current.
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Old 28th December 2013, 03:55 PM   #3
jcx is offline jcx  United States
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what V,I is needed? - LTC6090 is a 140 V high Vsupply CMOS op amp but only smt as usual for new parts today

for audio power TDA7293 takes higher Vsupply than most chip amps


if only increased output swing is needed then bridged outputs double the output V
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