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參數(shù)資料
| 型號： | TEA1066T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Versatile telephone transmission circuit with dialler interface |
| 中文描述： | TELEPHONE SPEECH CKT, PDSO20 |
| 封裝： | PLASTIC, SO-20 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大小： | 133K |
| 代理商： | TEA1066T |
1996 Apr 04
13
Philips Semiconductors
Product specification
Versatile telephone transmission circuit
with dialler interface
TEA1066T
Fig.8 Typical current I
p
available from V
CC
for external (peripheral) circuitry with V
CC
> 2.2 V and V
CC
> 3 V.
Curves (1) and (3) are valid when the receiving amplifier is not driven or when MUTE = HIGH. Curves (2) and (4) are valid when MUTE = LOW and the
receiving amplifier is driven, V
o(rms)
= 150 mV, R
L
= 150
(asymmetrical). I
line
= 15 mA; V
LN
= 4.45 V; R1 = 620
and R9 = 20
.
(1) I
p
= 2.55 mA.
(2) I
p
= 2.1 mA.
(3) I
p
= 1.2 mA.
(4) I
p
= 0.75 mA.
handbook, halfpage
0
1
(1)
(2)
(3)
(4)
Ip
(mA)
2
4
VCC (V)
0
1
2
MBH124
3
Fig.9 Alternative microphone arrangements.
(1) May be connected to lower the terminating impedance.
a. Magnetic or dynamic
microphone.
b. Electret microphone.
c. piezoelectric microphone.
handbook, full pagewidth
MBH121
VEE
VCC
MICH
+
MICH
(1)
17
12
10
8
MICH
MICH
+
8
10
MICL
MICL
+
7
9
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