Sku:
MC34118G-S28-R
The UTC MC34118 voice switched speaker-phoneintegrated circuit incorporates the necessary amplifiers,attenuators, level detectors and control algorithm to form theheart of a high quality hands-free speaker-phone system.
It includes a microphone amplifier with adjustable gain andmute control.
Transmit and Receive attenuators which operate in a complementary manner, level detectors at both input and output of both attenuators, and background noise monitors for both the transmit and receive channels.
A dial tone detector prevents the dial tone from being attenuated bythe receive background noise monitor circuit. Also two linedriver amplifiers which can be used to form a hybrid networkin conjunction with an external coupling transformer.
A high-pass filter can be used to filter out 60Hz noise in thereceive channel, or for other filtering functions.
A chip disable pin permits powers down the entire circuit to conserve power on long loops where loop current is at a minimum.
The UTC MC34118 may be operated from a power supply, or it can bepowered from the telephone line, requiring typically 5mA.
The UTC MC34118 can be interfaced directly to TIP and RING( through a coupling transformer) for stand-alone operation, or it can be used in conjunction with a handset speech network and/or other features of a feature phone.
UK Customers
Orders below £100.00 can be delivered by 1st Class Post at a rate of £3.50 (allow 3-5 working days) or a next working day tracked courier at a rate of £9.00.
Orders above £100.00 are delivered by a next working day tracked courier at a rate of £9.00.
All prices shown exclude VAT.
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