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參數(shù)資料
| 型號： | TEA7540FP |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | HANDSFREE CONTROLLER |
| 中文描述： | 免提控制器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 132K |
| 代理商： | TEA7540FP |
TEA7540OPERATION
TEA7540 is powered through an external shunt
regulator (for instance the shunt regulator of the
monitor amplifier TEA7532) or an external zener
diode.
It can work at a very low voltage (2.5V) over the
circuit and it has a low current consumption
(2.1mA).
It’s also possible via the chip select pin (CS) to
put the handsfree function in standby to use the
circuit in monitoringmode with the handset micro-
phone.
TEA7540 is designed to work with all kind of mi-
crophone,includingElectret.
TEA7540 also handles the handset microphone
signal (AMP IN) when the system is set to normal
conversationmode.
Figure C:
ApplicationDiagram (Example of high range telephoneset using TEA7540).
Symbol
V
+
Top
T
stg
Parameter
Value
12
-20 to 70
-65 to 125
Unit
V
°
C
°
C
Supply Voltage
Operating Temperature
Storage Temperature Range
ABSOLUTE MAXIMUM RATINGS
TEA7540
5/12
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