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MC34118 の電気的特性と機能

MC34118のメーカーはUnisonic Technologiesです、この部品の機能は「Voice Switched Speaker Phone Circuit」です。


製品の詳細 ( Datasheet PDF )

部品番号 MC34118
部品説明 Voice Switched Speaker Phone Circuit
メーカ Unisonic Technologies
ロゴ Unisonic Technologies ロゴ 




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MC34118 Datasheet, MC34118 PDF,ピン配置, 機能
UNISONIC TECHNOLOGIES CO., LTD
MC34118
LINEAR INTEGRATED CIRCUIT
VOICE SWITCHED
SPEAKER-PHONE CIRCUIT
DESCRIPTION
As a voice switched speaker-phone integrated circuit, the UTC
MC34118 includes the necessary amplifiers, attenuators, level
detectors and control algorithm.
To form the UTC MC34118’s internal circuit, there is an internal
microphone amplifier with adjustable gain and mute control, internal
transmit and Receive attenuators (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.
The dial tone can be pretended from being attenuated by the
receive background noise monitor circuit by a dial tone detector.
There are also two line driver amplifiers which can be used to form a
hybrid network in conjunction with an external coupling transformer. A
high-pass filter can be used for other filtering functions, and especially
to filter out 60Hz noise in the receive channel.
The UTC MC34118 which requiring typically 5mA may be
operated from a power supply, or it can be powered from the
telephone line.
FEATURES
* Attenuator gain range: 52dB (between Transmit and Receive)
* For line-powered applications : 3~6.5V low voltage operation
* For improved sensitivity :4-point signal sensing
* For Transmit and Receive paths: background noise monitors
* External resistors set microphone amplifier gain
* Mute function included
* Chip disable: active or standby operation
* During dial tone presence: dial tone detector to inhibit receive idle
mode
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
- MC34118G-D28-T
MC34118L-E28-T
MC34118G-E28-T
- MC34118G-S28-T
- MC34118G-S28-R
Package
DIP-28
SDIP-28
SOP-28
SOP-28
DIP-28
SDIP-28
SOP-28
Packing
Tube
Tube
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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MC34118 pdf, ピン配列
UNISONIC TECHNOLOGIES CO., LTD
MC34118
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PIN NAME
FO
FI
CD
VCC
HTO+
HTO-
HTI
TXO
TXI
MCO
MCI
MUT
VLC
CT
VB
CPT
TLI2
TLO2
RLO2
RLI2
RXI
RXO
TLI1
TLO1
RLO1
RLI1
CPR
GND
DESCRIPTION
Output of filter. The output impedance is less than 50.
Input of filter. The input impedance is less than 1M.
Chip Disable input .A logic low (voltage lower than 0.8V) sets normal operation. A logic
high (voltage higher than 2V) disable the IC. This pin’s input impedance is 90 K
nominally.
This pin requires a supply voltage of +2.8V ~ +6.5V at 5mA. After VCC falls from 3.5V ~
2.8V, when in the receive mode, an AGC circuit reduces the receive attenuator gain by
25dB.
The output of the second hybrid amplifier. This amplifier’s gain is internally set at -1.
Output of the first hybrid amplifier. This amplifier’s gain of the amplifier is set by
external resistors.
The first hybrid amplifier’s input and summing node. DC level is about equal to VB.
The transmit attenuator’s output. DC level is about VB.
The transmit attenuator’s input. It’s maximum signal level is 350 mVrms. The input
impedance is 10K.
The microphone amplifier’s output. This amplifier’s gain is set by external resistors.
The summing node of the microphone’s input. DC lever is VB.
Input of mute. A logic low (voltage lower than 0.8V) sets the circuit normal operation. A
logic high (voltage higher than 2V) mutes the microphone amplifier, but it doesn’t affect
the rest of the circuit. The input impedance is 90 K ohms.
The input of Volume control. In the receive mode, when VLC=VB, the receive
attenuator is at maximum gain. The receive gain is down 35dB when VLC=0.3dB, and
it does not effect the transmit modes.
At this pin, to switch modes, the RC sets the response time for the circuit.
In this pin, there’s an output voltage=Vcc/2 which is a system AC ground and biases
the volume control. What required is a filter capacitor.
The time constant for the transmit background side can be set by the RC at this pin .
The input to the transmit level detector which is on the microphone/ speaker side.
The output to the transmit level detector which is on the microphone/ speaker side.
Also the input to the transmit background monitor.
The Output of the receive level detector which is on the microphone/ speaker side
The input to the receive level detector which is on the microphone/ speaker side
The input to the receive attenuator and dial tone detector. In this pin, the maximum
input level is 350mVrms,and the input impedance is 10K.
The output of the receive attenuator. This pin’s DC level is VB.
The input to the transmit level detector which is on the line side.
The output to the transmit level detector which is on the line side, and also the input to
the transmit background monitor.
The output of the receive level detector which is on the line side.
The input to the receive level detector which is on the line side.
The time constant for the receive background monitor can be set by the RC at this pin.
Ground.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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MC34118 電子部品, 半導体
UNISONIC TECHNOLOGIES CO., LTD
MC34118
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
Transmit Attenuator Gain (f=1kHz)
TX Mode, TXI=150mVrms
Idle Mode, TXI=150mVrms
TX to Rx Mode Range
TXO DC Voltage
TXO DC Voltage
TXO High Voltage
TXO Low Voltage
TXI Input Resistance
Gain Tracking
GTX
GTXI
GTXI
VTXO
VTXO
VTXOH
VTXOL
RTXI
GTR
TX
TX to RX Mode
IOUT=-1mA, TXI=VB+1.5V
IOUT =+1mA, TXI=VB-1V,
Output Measured with
Respect to VB
TXI<350mVrs
GRX+GTX, @TX, IDIE, RX
Attenuator Control
CT Voltage ( CT-VB)
RX Mode
Idle Mode
TX Mode
CT Source Current
CT Sink Current
CT Slow Idle Current
CT Fast Idle Internal Resistance
VLC Input Current
Dial Tone Detector Threshold
VLC=VB
ICTR (Switching to RX Mode)
ICTT (Switching to TX Mode)
ICTS
RFI
IVLC
VDT
Microphone Amplifier ( VMUT< 0.8V, AVCL=31dB, unless otherwise specified)
Output Offset
MCOVOS VMCO-VB, RF=180 k
Open Loop Gain
AVOLM F<100Hz
Gain Bandwidth
GBWM
Output High Voltage
VMCOH IOUT =1mA, VCC=5V
Output Low Voltage
VMCOL IOUT =1mA
Input Bias Current
IBM @MCI
Muting(Gain)
GMT
f=1kHz, VMUT=2V
300Hz<f<10kHz
MUT Input Resistance
RMUT VCC=VMUT=6.5V
MUT High Input Voltage
VMUTH
MUT Low Input Voltage
VMUTL
Distortion
THDM 300Hz<f<10kHz
HYBID AMPLIFIER
HTO-Offset
HTO- to HTO+ Offset
Open Loop Gain
Gain Bandwidth
Closed Loop Gain
Input Bias Current(@HTI)
HTO- High Voltage
HTO- Low Voltage
HTO+ High Voltage
HTO+ Low Voltage
Distortion
HVOS
HBVOS
AVOLH
GBWH
AVCLH
IBH
VHT-H
VHT-L
VHT+H
VHT+L
THDM
VHTO-~VB, RF=51k
RF =51k
HTI to HTO-, F<100Hz
HTO- to HTO+
IOUT =-5mA
IOUT =+5mA
IOUT =-5mA
IOUT =+5mA
300Hz<f<10kHz
MIN TYP MAX UNIT
4 6 8 dB
-22 -20 -17 dB
49 52 54 dB
VB V
+-30 +-150 mV
3.7 V
-1.5 -1 V
7 10 14 k
+-0.1
dB
240 mV
0 mV
-240
mV
-85 -60 -40 µA
+40 +60 +85 µA
0 µA
1.5 2 3.6 k
-60 nA
10 15 20 mV
-50 0 50 mV
70 80
dB
1 MHz
3.7 V
200 mV
-40 nA
-55 -68
50 90
2 Vcc
0 0.8
0.15
dB
k
V
V
%
-20 0 20 mV
-30 0 30 mV
60 80
dB
1 MHz
-0.35 0 0.35 dB
-30 nA
3.7 V
250 mV
3.7 V
450 mV
0.3 %
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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