SINGLE CHIP SPEAKERPHONE WITH 8 - OHM LOUDSPEAKER AMPLIFIER

General description The amplifier is a simple, low cost add-on circuit to the SA253x single chip telephone family. It is supplied by the line current and amplifies the receive signal, taken from either RO1 or RO2 (Receive outputs), see Fig.1. Compared to more complex “real” handsfree circuits t

SINGLE CHIP SPEAKERPHONE WITH 8 - OHM LOUDSPEAKER AMPLIFIER

General description The amplifier is a simple, low cost add-on circuit to the SA253x single chip telephone family. It is supplied by the line current and amplifies the receive signal, taken from either RO1 or RO2 (Receive outputs), see Fig.1. Compared to more complex “real” handsfree circuits t

SINGLE CHIP SPEAKERPHONE WITH 8 - OHM LOUDSPEAKER AMPLIFIER

General description The amplifier is a simple, low cost add-on circuit to the SA253x single chip telephone family. It is supplied by the line current and amplifies the receive signal, taken from either RO1 or RO2 (Receive outputs), see Fig.1. Compared to more complex “real” handsfree circuits t

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[J.W.Miller]

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