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參數(shù)資料
| 型號： | TEA1085AT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Listening-in circuit for line-powered telephone sets |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| 封裝： | PLASTIC, SO-24 |
| 文件頁數(shù)： | 24/32頁 |
| 文件大小： | 199K |
| 代理商： | TEA1085AT |
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March 1992
24
Philips Semiconductors
Preliminary specification
Listening-in circuit for line-powered
telephone sets
TEA1085; TEA1085A
The basic application circuit of the TEA1085/TEA1085A is illustrated in Fig.16. Only the most important components of
the TEA1060 part are shown, other components and their values are given in the TEA1060 Data sheet.
The supply pin (V
BB
) of the TEA1085/TEA1085A can also be used to supply peripheral circuits (e.g. microcontrollers,
diallers etc.). Further information will be published in the TEA1085 application report.
Table 3
Component values in application circuit
Fig.16
Note
1.
Value depends on the gain setting of the transmission circuit.
COMPONENT
CONDITION
VALUE
UNIT
Resistor
R20
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
RV20
150
1
10
10
3.3
3.3
1.65
100
220
100
500
100
51
120
1
k
k
k
M
M
M
k
k
k
k
k
k
k
note 1
note 1
note 1
note 1
note 1
Capacitor
C11
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
4.7
470
47
4.7
4.7
4.7
330
1
47
330
220
220
nF
μ
F
pF
nF
nF
nF
nF
μ
F
μ
F
nF
nF
nF
nF
TEA1085 only 10
Coil
L1
150
μ
H
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