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參數(shù)資料
| 型號： | TEA7533 |
| 廠商： | 意法半導體 |
| 英文描述： | Monitor Amplifier(監(jiān)控放大器) |
| 中文描述： | 監(jiān)視器放大器（監(jiān)控放大器） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 74K |
| 代理商： | TEA7533 |
TEA7533
MONITOR AMPLIFIER
7 DIGITALLY PROGRAMMABLE GAINS IN
STEPS OF 4.5dB
ON/OFFPOSITION
LOW VOLTAGE(3.5V to 6.5V)
POWER:>140mW at 5V; >250mW at 6.5V
DESCRIPTION
This 20 pins IC is designed for monitoring and
loudspeaker telephone set and provides:
a)signal amplification for monitoring (loudspeaker).
b)antiacoustic feedback (antilarsen).
c)antidistortion byautomatic leveladaptation.
d)antilarsen adjustment (full duplex).
e)antidistortion byautomatic gain adaptation in
current supply mode.
f) service audio inputs with internaldedicated
switches.
FUNCTIONALDESCRIPTION
TEA7533 performs the following functions:
The circuit amplifies the incoming signal and
feeds it to the loudspeaker. PG0, PG1 and PG2
inputs are used to set the loudspeaker gain in a
range of 32dBto 5dB in 7 steps of 4.5dB.
The TEA7533 inputs (PG0, PG1, PG2) allows
also the loudspeaker to be cut-off, thus ensuring
privacy of communication.
The antilarsen (antiacoustic feedback) system
is incorporated.
The maximum power available on a 50
im-
pedance loudspeaker is 140mW at 5V and
250mWat 6.5V.
September 1993
SO20
ORDERING NUMBER:
TEA7533FP
GCTRL1
0 dB TO -20
EARPHONE
IN1
2
CAGC
19
VREF,
0.8V, 1.2V
VOLTAGE &
CURRENT
REFERENCE
ctrl
GCTRL2
0 dB TO -15
Vth = 0.6V ctrl
7
8
MIC1
MIC2
R19
C19
R7
C7
C8
R9
VREF
VREF
+
-
+
-
+
-
9
10
11
15
C9
C10
R10
C13
FAL
TC1
LOUT
GND
LS1
REF
13
6
VREF
5V
Supply
IN2
3
20
1
18
17
16
IN3
SW
G0
G1
G2
14
12
LS2
VCC
20 dB
C12
R14
C4
HP
12 dB MAX
10
μ
A
+
PROG. LEVEL
LS
AMP
CL1
CL2
5
4
C14
∑
R8
TEA7533
D93TL008
BLOCK DIAGRAM
1/8
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PDF描述 |
|---|---|
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| TEA7610SP | 50 AMP LATCHING POWER RELAY |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA7540 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HANDSFREE CONTROLLER |
| TEA7540FP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HANDSFREE CONTROLLER |
| TEA7605 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-DROP VOLTAGE REGULATOR |
| TEA7610 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-DROP VOLTAGE REGULATOR |
| TEA7610SP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-DROP VOLTAGE REGULATOR |
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