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參數(shù)資料
| 型號(hào)： | LS256 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Telephone Speech Circuit With Multifrequency Tone Generator Interface(帶多頻語(yǔ)音發(fā)生器接口的電話語(yǔ)音電路) |
| 中文描述： | 電話語(yǔ)音電路多頻音發(fā)生器接口（帶多頻語(yǔ)音發(fā)生器接口的電話語(yǔ)音電路） |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 80K |
| 代理商： | LS256 |
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
SPEECH OPERATION (continued)
Parameter
Test Conditions
Min.
Typ. Max.
Unit
Fig.
G
R
Sidetone
F = 1kHz, T
amb
= 25
°
C, S
1
in (b)
I
L
= 52mA
I
L
= 25mA
36
36
700
dB
2
Z
ML
Line Matching Impedance
V
RI
= 0.3V, f = 1kHz
I
L
= 12 to 80mA
500
600
MULTIFREQUENCY SYNTHESIZER INTERFACE
V
DD
MF Supply Voltage
(standby and operation)
I
DD
MF Supply Current
Stand by
Operation
MF Amplifier Gain
I
L
= 12 to 80mA
2.4
2.5
V
I
L
= 12 to 80mA
I
L
= 12 to 80mA ; S
2
in (b)
I
L
= 12 to 80mA, f
MF
in = 1kHz
V
MF
in = 80mV
V
M Fin
= 80mV
V
M Fin
= 80mV
V
M Fin
= 110mV
I
L
I
L
= 12 to 80mA
Speech Operation
MF Operation
I
L
= 12 to 80mA
I
L
= 12 to 80mA, S
2
in (b)
0.5
2
15
mA
mA
dB
17
4
V
I
R
I
d
DC Input Voltage Level (pin 14)
Input Impedance (pin 14)
Distortion
3V
DD
V
k
%
40
2
4
Starting Delay Time
Muting Threshold Voltage (pin 3)
5
1
ms
V
V
μ
A
μ
A
1.6
Muting Stand by Current (pin 3)
Muting Operating Current (pin 3)
– 10
+ 10
LS256
5/8
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