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參數(shù)資料
| 型號： | TEA7532 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Monitor Amplifier(監(jiān)聽放大器) |
| 中文描述： | 監(jiān)視器放大器（監(jiān)聽放大器） |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 195K |
| 代理商： | TEA7532 |
FUNCTIONAL DESCRIPTION
TEA7532performs the following functions:
The circuit amplifies the incoming signaland feeds
itto theloudspeaker.PG0 andPG1 inputsare used
to set the loudspeaker gain in a range of 32dB to
14dB in 6dB steps.
The TEA7532 inputs (PG0, PG1, ON/OFF) permit
the loudspeakerto be cut-offthus ensuring privacy
of communication.
- The antilarsen (antiacoustic feedback) system is
incorporated.
- The maximum power available on a 50
imped-
anceloudspeakeris 25mWat 3volts and 100mW
at 5V.
Limit values for externalcomponents:
R3 min = 5 k
(R3 adjust VLS),R7 max = 390 k
,
R6 min = R7/35
R maxbetweenpin5 and6=10k
+C min= 10nF.
ELECTRICAL CHARACTERISTICS
(T
amb
= 25
o
C, I
LS
= 30mA unless otherwise specified)
Symbol
V
LS1
Parameter
Test Conditions
Min.
2.6
Typ.
3.0
3.15
Max.
3.4
3.4
5.5
1.4
Unit
V
V
V
V
V
LS
Supply
I
LS
= 2mA (fig. 7)
I
LS
= 30mA (fig. 7)
I
pin 1
= 50
μ
A (fig. 7 ; So = closed)
I
LS
= 2mA to 30mA (fig. 7)
V
LSM
V
ADJ
V
LS
Maximum
Voltage Pin 1
Loudspeaker Amplifier Gain =V
10
V
12
1.1
1.25
G
V
9
ON/OFF
GND
GND
GND
GND
V
LS
f = 300Hz to 2kHz,
V
10
– V
12
= 0.8V
RMS
,
G = G011, (fig. 8)
P
G0
= P
G1
= V
LS
, V
8
= 0.8V (fig. 8)
Symetrical at (pins 5-6)
Asymetrical at (pin 6) fig. 9
(fig. 9)
PG0
GND
GND
V
LS
V
LS
X
PG1
GND
V
GND
V
LS
X
G000
G001
G010
G011
G100
THD
12
18
24
30
14
20
26
32
– 30
16
22
28
34
– 20
2
dB
dB
dB
dB
dB
%
Distortion
G2
Z
MICIN
[V(10) – V(12)]/V2
Microphone Input
30
32
4.5
34
dB
k
Z
INPIN
Z
IN2
V
OFFS
Earphone Input
Antilarsen Adjustment Input
Ouput Offset
[V
(10)
– V
(12)
]
Input Current ON State
2.2
1
– 50
2.8
1.2
3.4
1.45
50
k
k
mV
G011 ; (fig. 8)
I
ON/OFF
PG0
I
PG1
I
ON/OFF
I
PG0
I
PG1
V
IL ON/OFF
V
IL PG0
V
IL PG1
V
IH ON/OFF
V
IH PG0
V
IH PG1
G
MIC
Vg
G
ATT
V
PG1
= 0V ; (fig. 8)
– 10
– 10
– 10
– 5
– 5
– 5
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
V
V
V
V
V
V
dB
V
dB
dB
Input Current OFF State
V
PG1
= V
LS
; (fig. 8)
1
1
1
Input Voltage ON State
0.45
0.45
0.45
Input Voltage OFF State
1.5
1.5
1.5
22.5
0.48
Microphone Gain = V
(7)
/[V
(5)
– V
(6)
]
Voltage Pin 8
Loudspeaker Attenuated
Gain = [V
(10)
– V
(12)
]/V
(9)
V
MIC
= 10mV
RMS
, f = 2kHz (fig. 10)
23.5
0.67
– 30
30
24.5
0.75
– 20
G011 ; V
8
= 0.6V ; (fig. 10)
G011 ; V
8
= 0.4V ; (fig. 10)
20
TEA7532
3/16
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| 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 |
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