參數(shù)資料
型號(hào): AN6175K
廠商: PANASONIC CORP
元件分類(lèi): 通信及網(wǎng)絡(luò)
英文描述: LJT 29C 29#16 SKT WALL RECP
中文描述: SPECIALTY TELECOM CIRCUIT, PDIP42
封裝: 0.600 INCH, SHRINK, PLASTIC, DIP-42
文件頁(yè)數(shù): 20/21頁(yè)
文件大?。?/td> 210K
代理商: AN6175K
20
ICs for Telephone
AN6175K
31
50k
100k
I
Detailed Pin Descriptions(cont.)
Equivalent circuit
Description
Pin No.
Symbol
31
32
33
34
35
36
37
HS, HF/MF
HS/HF
Vr
ST
MFI
HF1
V
CC
2
[Mode switching(handset or hands-free
/MF)]
This pin must be connected to V
for
the HS or HF mode(SW2 to a), or to
GND for the MF mode (SW2 to b).
[Mode switching(handset/hands-free)]
This pin must be connected to V
for
the HS mode (SW1 to a), or to GND for
the HF mode (SW1 to b).
[Reference for the handset or hands-free
mode]
The voltage equal to half the V
CC
1 volt-
age is output.
[Input to the base of the power supply
transistor]
This pin connects to the base of Q4.
[MF input]
MF signals are input to this pin through
C35(0.1
μ
F). The input impedance,
Zin=20 k
.
[From transmitter att. output(hands-free
mode)]
The transmitter attenuator output is sent
from Pin18 to this pin through C37(0.1
μ
F). The input impedance, Zin=20 k
.
[Transmission amp. AC impedance setting]
This pin connects to V
1 through C38
(100
μ
F)and to the collector of Q3 (trans-
mission transistor)through R38(330
).
32
50k
100k
+
33
V
CC
1
34
35
20k
+
36
V
CC
1
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