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MC34018-S28-T View Datasheet(PDF) - Unisonic Technologies

Part Name
Description
Manufacturer
MC34018-S28-T
UTC
Unisonic Technologies UTC
MC34018-S28-T Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
MC34018
„ TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
TRANSMIT
OUTPUT
VB
MIC
12k
0.05
F
9
2k
0.1 F
MCI
3.3k
0.068 F
5 TLI
VB
6 TLO
4.7k
0.068 F
7 RTI
VB
0.068 F
4.7k
4.7 F
47 F
DC line input
1000 F
Receive input
10 13
MCO XDI
59k
12
CP2
MIC AMP
VB
500
TRANSMIT
LOG AMP
VB
33k
56k
Attenuator
control
11
CP1
transmit
detector comp
23
XDC
Vcc
2.6k
18
CS
VCC
regulator
Vth
(36mV)
peak
limiter
16
V+
Vcc
47 F
5.4V 20
22
GND
AGC
17
VB
1.0 F
RECEIVE/TRANSMIT
COMP
Vcc
500
VB
regulator
transmit
attenuator
receive
attenuator
Vcc
Speaker
amp
RECEIVE
AMP
RLO
VB VLC ACF TXI RTX RR TXO RXI RRX RXO SKI
SKG
SKO
8
21 24 25 3 2 1 4 27 28 26 19
14
15
1.0 F
VB
47 F
4.7 F
30k
2.2M
Vcc
0.1 F
0.1 F
18k 4.3k
0.05
F
0.01
F
47 F
25
Fig 1 Test circuit
„ BASIC LINE POWERED SPEAKERPHONE
Fig 2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 8
QW-R108-006,C
 

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