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MC34018G-R28-R Datasheet(PDF) 7 Page - Unisonic Technologies

Part # MC34018G-R28-R
Description  VOICE SWITCHED SPEAKER-PHONE CIRCUIT
PDF  8 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

MC34018G-R28-R Datasheet(HTML) 7 Page - Unisonic Technologies

  MC34018G-R28-R Datasheet HTML 1Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 2Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 3Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 4Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 5Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 6Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 7Page - Unisonic Technologies MC34018G-R28-R Datasheet HTML 8Page - Unisonic Technologies  
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MC34018
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
7 of 8
www.unisonic.com.tw
QW-R108-006.E
TEST CIRCUIT
VB
VB
VB
VB
VB
19
26
28
27
4
1
2
3
25
21
8
7
6
5
9
10
13
12
11
23
18
16
20
22
17
15
14
24
VB
regulator
Attenuator
control
RECEIVE/TRANSMIT
COMP
transmit
attenuator
receive
attenuator
Speaker
amp
peak
limiter
VCC
regulator
transmit
detector comp
Vth
(36mV)
RECEIVE
AMP
TRANSMIT
LOG AMP
MIC AMP
Vcc
Vcc
RLO
VB
VLC ACF
TXI
RR
TXO
RRX
RXI
RTX
RXO
SKI
SKG
SKO
AGC
GND
Vcc
5.4V
V+
CS
XDC
CP1
CP2
XDI
MCO
MCI
TLI
TLO
RTI
25
4.3k
18k
30k
47 F
0.05
F
0.01
F
0.1 F
0.1 F
4.7 F
47 F
1.0 F
Vcc
2.2M
VB
0.068 F
4.7k
0.068 F
3.3k
2k
0.1 F
0.05
F
0.068 F
4.7k
4.7 F47 F
1000 F
47 F
1.0 F
Vcc
12k
59k
33k
56k
500
500
DC line input
Receive input
MIC
TRANSMIT
OUTPUT
2.6k
VB
Fig 1 Test circuit
BASIC LINE POWERED SPEAKERPHONE
3
10
13
4
5
11
25
17
16
9
15
14
24
21
20
2
1
28
26
19
12
18
7
27
23
6
8
22
TXI
MCO
XDI
TXO
TLI
CP1
ACF
AGC
V+
CS
RLI
RXI
GND
RLO
TLO
XDC
CP2
SKI
RXO
RRX
RR
RTX
Vcc
VB
VLC
SKG
SKO
MCI
20k
24k
91k
30k
18k
4.3k
200k
47
F
47
F
4.7
F
4.7
F
2.2M
2.2M
47 F
2k
4.7k
0.1
F
3.3k
100k
47 F
Vcc
3.3k
0.01
F
47k
4700pF
4700pF
0.05
F
470k
47k
6.8k
2.7k
220k
68k
4.7k
0.1
F
MIC
Speaker
Volume
Control
Hook
Switch
S1
T
R
S2
UTC MC34018
VB
VB
VB
Fig 2



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