MC33219A circuit equivalent, voice switched speakerphone circuit.
t Voltage (IVB = 0) CT Source Current Switching to Rx Mode CT Sink Current Switching to Tx Mode Attenuator “On” Gain Attenuator Range Volume Control Range (Rx Mode Only, .
include not only speakerphones, but intercoms and other voice switched devices. The MC33219A is available in a 24 pin na.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Symbol CP2 XDI CPT TLI TLO VB CT CD NC CPR RLI RLO GND RAO RAI RXO RXI MUTE VLC Description A capacitor at this pin stores voltage representing the transmit background noise and speech levels for th.
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