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參數(shù)資料
| 型號： | TEA7540 |
| 廠商： | 意法半導體 |
| 英文描述： | Handsfree Controller(無手柄控制器) |
| 中文描述： | 免提控制器（無手柄控制器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 132K |
| 代理商： | TEA7540 |
TEA7540
HANDSFREE CONTROLLER
NOISE/SPEECH DISCRIMINATION IN EMIS-
SION ANDRECEPTION
INTEGRATED SIGNAL GAIN COMPRESSOR
IN BOTHMODES
PROGRAMMABLE ATTENUATORS IN BOTH
MODES
ADAPTED TO ACOUSTIC PARAMETERS OF
ALL CABINETS
LOW OPERATINGVOLTAGE2.5V
LOW OPERATINGCURRENT 2.1mA
CHIP SELECT BETWEEN HANDSFREE AND
MONITORINGMODES
DESCRIPTION
This 28 pins IC is an innovative approach to quality
handsfreetelephonesets.Itresultsfromanextensive
researchonspeechsignal.
July 1998
T
is advancedinformationon a new product now in development or undergoing evaluation. Details are subject to change without
HYST2
TIM
CCE
CE3
CE2
MICOUT
CE1
INE
VREF
1
3
2
4
5
6
7
8
9
INR
RECOUT
CR1
CR3
CR2
CCR
AMP IN
AMP SUP
VOL
23
22
21
20
19
17
18
16
15
D93TL005
10
11
12
13
14
28
27
26
25
24
GND
CS
OUTE
ATTE
HYST1
ATR
ATTR
OUTR
IREF
V+
PIN CONNECTION
(top view)
SO28
ORDERING NUMBERS:
TEA7540FP
1/12
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| TEA7540FP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HANDSFREE CONTROLLER |
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