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Número de pieza | MC34018 | |
Descripción | VOICE SWITCHED SPEAKER-PHONE CIRCUIT | |
Fabricantes | Unisonic Technologies | |
Logotipo | ||
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No Preview Available ! 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 25Ω) with
peak limiting for speaker to minimize distortion.
* Volume control function for external volume control circuit.
ORDERING INFORMATION
Order Number
Lead Free
Halogen Free
- MC34018G-D28-T
MC34018L-E28-T
MC34018G-E28-T
- MC34018G-R28-T
- MC34018G-R28-R
- MC34018G-S28-T
- MC34018G-S28-R
Package
DIP-28
SDIP-28
SSOP-28
SSOP-28
SOP-28
SOP-28
Packing
Tube
Tube
Tube
Tape Reel
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 8
QW-R108-006.E
1 page MC34018
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25C, Voltage referred to pin 22.)
PARAMETER
SYMBOL
RATINGS
UNIT
V+ terminal Voltage (pin 16)
+12, -1.0
V
CS (pin 18)
+12, -1.0
V
Speaker amplifier Ground(pin 14)
+3.0, -1.0
V
VLC(pin 24)
+VCC, -1.0
V
Storage temperature
TSTG
-65 ~ +150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATION CONDITIONS
PARAMETER
V+ Terminal Voltage (pin 16)
CS (pin 18)
VLC (pin 24)
Receive Signal(pin 27)
Microphone Signal(pin 9)
Speaker Amplifier Ground (pin 14)
ICC (pin 20)
Ambient Temperature
SYMBOL
TA
RATINGS
+6.0 ~ +11
0 ~ +11
0.55VB ~ VB
0 ~ 250
0 ~ 5.0
-10 ~ +10
0 ~ 3.0
-20 ~ +60
UNIT
V
V
V
mVrms
mVrms
mVdc
mA
C
TEMPERATURE CHARACTERISTICS (-20 ~+60C)
PARAMETER
V+ Supply Current ( V+ 11V,Pin 18 = 0.7V )
V+ Supply Current(V+ 11V,Pin 18 = 1.6V )
VCC Voltage( V+ = 7.5V )
Attenuator Gain ( Max and Min Setting )
Delta RXO,TXO Voltage
Speaker AMP Gain
Microphone AMP Gain
Microphone Amp Input Resistance
Tx-Rx Switching Threshold (20A)
PIN
16
16
20
4,26
15,19
9,10
9
5,7
TYP CHANGE
-0.2
-0.4
+0.1
±0.003
±0.24
±0.001
±0.4
+0.4
±0.2
UNIT
%/C
%/C
%/C
dB/C
%/C
dB/C
dB/C
%/C
nA/C
ELECTRICAL CHARACTERISTICS (Referred to Fig.1)
PARAMETER
SUPPLY VOLTAGES
VCC Voltage
Line Regulation
Dropout Voltage
VB Voltage
V+ Supply Current
Output Resistance
Output Resistance
ATTENUATORS
Receive Attenuator Gain
(1.0kHz)
Rx Mode, Pin 24= VB
Pin 27 = 250Mvrms
Range (Rx to Tx Modes)
Idle Mode, Pin 27= 250mVrms
SYMBOL
TEST CONDITIONS
VCC
VCCLN
VD
VB
IV+
ROUT
ROUT
V+=7.5V
6.5V<V+<11V
V+=5.0V
V+=7.5V
V+=11V, Pin 18=0.7V
V+=11V, Pin 18=1.6V
ICC=3mA
IB=1.7mA
GRX
GRX
GRI
MIN TYP MAX UNIT
4.9 5.4 5.9 Vdc
65 150 mV
80 300 mV
2.5 2.9 3.3 Vdc
9.0 mA
800 μA
6.0 20 Ω
250 Ω
2.0 6.0 10 dB
40 44 48 dB
-20 -16 -12 dB
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R108-006.E
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet MC34018.PDF ] |
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