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MC34018-R28-T View Datasheet(PDF) - Unisonic Technologies

Part Name
Description
Manufacturer
MC34018-R28-T
UTC
Unisonic Technologies UTC
MC34018-R28-T Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
UNISONIC TECHNOLOGIES CO., LTD
MC34018
LINEAR INTEGRATED CIRCUIT
VOICE SWITCHED
SPEAKER-PHONE CIRCUIT
„ DESCRIPTION
The UTC MC34018 speaker-phone integrated circuit includes all
the active circuitry and control functions to implement a high quality
hands-free telephone system. The circuit includes a microphone
amplifier, a speaker amplifier, level detectors, a background sound
level monitoring system in both the transmit and receive channels
and an attenuation system which can control the transmit and
receive levels as well as the background level.
The applications include household and office speaker-phones,
intercom systems, hand free kit for mobile phones, and others.
„ FEATURES
* Chip Select pin for Power conservation (active/standby mode).
* Integrated all necessary active circuitry for a hand-free telephone
into one single chip.
* Operating under wide dynamic range through signal compression
technology.
* Build-In voltage regulators illuminate external regulators for lining
operation.
* Monitoring system for background noise level.
* Background sound level compensation for transmit and
receive levels as well as the background level.
* Power audio amplifier for typical 100mW output (into 25) with
peak limiting for speaker to minimize distortion.
* Volume control function for external volume control circuit.
„ ORDERING INFORMATION
*Pb-free plating product number:MC34018L
Order Number
Normal
Lead Free Plating
MC34018-D28-T
MC34018L-D28-T
MC34018-E28-T
MC34018L-E28-T
MC34018-R28-R
MC34018L-R28-R
MC34018-R28-T
MC34018L-R28-T
MC34018-S28-R
MC34018L-S28-R
MC34018-S28-T
MC34018L-S28-T
Package
DIP-28
SDIP-28
SSOP-28
SSOP-28
SOP-28
SOP-28
Packing
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
MC34018L-D28-T
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) D28: DIP-28, E28: SDIP-28, S28: SOP-28,
R28: SSOP-28
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 8
QW-R108-006,C
 

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