MC33218A Datasheet (Motorola) - VOICE SWITCHED SPEAKERPHONE

MC33218A, VOICE SWITCHED SPEAKERPHONE

Order this document by MC33218A/D Advance Information Voice Switched Speakerphone with Microprocessor Interface The Motorola MC33218A Voice Switched Speakerphone Circuit incorporates the necessary amplifiers, attenuators, level detectors, and control algorithm to form the heart of a high quality hands free speakerphone system.

Included are a microphone amplifier with mute, transmit and receive attenuators, a background monitoring system for both the transmit and receive paths, and level

MC33218A Features

* Output swing is limited by the capability of the receive attenuator input. See Figure 16. 4 MOTOROLA ANALOG IC DEVICE DATA MC33218A ELECTRICAL CHARACTERISTICS (continued) (TA = + 25°C, VCC = 5.0 V, CD ≤ 0.8 V, unless noted, see Figure 3.) Characteristic SERIAL PORT (Pins 17

* 19) Switching