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PDF TEA7532DP Data sheet ( Hoja de datos )
| Número de pieza | TEA7532DP | |
| Descripción | MONITOR AMPLIFIER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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.... PROGRAMMABLE GAIN IN STEPS OF 6 dB
ON/OFF POSITION
LOW VOLTAGE
POWER : 100 mW AT 5 V
DES CRI P TI O N
This 16 pins IC is designed for monitor
(loudspeaker) telephone set and provides :
a) Signal amplification for monitoring (loudspeaker)
b) Antiacoustic feedback (antilarsen)
c) Antidistortion by automatic gain adaptation
d) Antilarsen adjustment (full duplex)
BLOCK DIAGRAM
TEA7532
MONITOR AMPLIFIER
DIP16
S O1 6
ORDERING NUMBERS : TEA7532DP (DIP16)
TEA7532FP (SO16)
July 1993
1/16
1 page  
TEST CIRCUITS
Figure 7 : ShuntvoltageRegulator/ Reference
Voltage at Pin 1.
TEA7532
Figure 8 : Loudspeaker Amplifier : Gain/Distor
tion/Output Offset.
S1 S2 S3
G1XX 1 X X
G000 0 0 0
G010 0 1 0
G001 0 0 1
Note : S0 open for VLS 1
S0 close for VLSM.
Figure 9 : Impedance ZMIC, ZINP and Zin2.
V (10) – V (12)
•G=
V (9)
• VOFFS with Vin = 0.
VLS = 1
GND = 0
Vout
=
V (9)
Figure 10 : Antiacoustic Feedback System at
G011.
Zmic =
1.1 V
I6
1.1 V
; Zinp =
I9
1.1 V
; Zin2 =
I2
5/16
5 Page 
THEORETICAL VOLTAGE ON PIN 3
Figure 19 :
TEA7532
Figure 20.
- The value of R affects the system time constant
and the charge/discharge duty cycle.
- The value of C only affects the system time con-
stant.
- R should be greater or equalthan 150kΩ for cor-
rect AGC operation.
PIN 4 : CIRCUIT SUPPLY VOLTAGE
With pin 1 open circuit, VLS is internally stabilized at
2.8 V.
Whenthe TEA7532is underAGC control, the voltage
on this pin varies slightly (due to AGC action).
11/16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TEA7532DP.PDF ] | |
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