Amplifier requires no dc bias


john guy @ writes:

Intrinsically capacitive transducers and other high-impedance signal sources usually require ac coupling and a buffer amplifier to condition the signal for further processing. Buffers take many forms, but most of them compromise signal quality through the use of external resistors that provide a dc path for the input bias current. Recent improvements in op-amp technology allow ac-coupled inputs without the need for bias resistors.

Amplifier requires no dc bias – [Link]

One Response on “Amplifier requires no dc bias

  1. The pin numbers shown in the opamp are backwards. Pin 2 is supposed to be (-) and pin 3 is supposed to be (+) like on every other dual opamp.

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