Low impedance buffer circuitry

Details Low impedance buffer circuitry Low impedance buffer circuitry

H - Electricity

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H03F 3/26 (2006.01) H03F 3/213 (2006.01) H03F 3/30 (2006.01) H03F 3/347 (2006.01)

Patent

CA 2016001

- 10- LOW IMPEDANCE BUFFER CIRCUITRY Abstract A low impedance class AB buffer stage in complementary transistor technology has its quiescent current stabilized and its operation thereby made more reliable by means of suitable error op-amps that are supplied with transistor feedback loops which are connected to the stage's output terminal through resistors. In addition, for full rail-to-rail output voltage capability, transistor switching devices are added to turn off current through either of the resistors when the output voltage approaches the voltage of either power rail, and also a pair of serially rail-to-rail connected transistors is connected in parallel with the feedback loops.

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