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7403 Datasheet(Fiches technique) 4 Page - STMicroelectronics

Numéro de pièce 7403
Description  BASIC SIGNAL PROCESSOR
Télécharger  26 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

7403 Datasheet(HTML) 4 Page - STMicroelectronics

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AUDIO PROCESSOR PART
Input Multiplexer
MPX input
Cassette stereo input
AM mono or stereo input
Internal beep with 2 frequencies (selectable)
Mixable phone and beep signals
Loudness
First or second order frequency response
Programmable center frequency and quality factor
15 x 1dB steps
Selectable flat-mode (constant attenuation)
Volume control
1dB attenuator
Max. gain 20dB
Max. attenuation 79dB
Soft-step gain control
Bass Control
2nd order frequency response
Center frequency programmable in 4(5) steps
DC gain programmable
7 x 2dB steps
Treble Control
2nd order frequency response
Center frequency programmable in 4 steps
7 x 2dB steps
Speaker Control
4 independent speaker controls (1dB steps
control range 50dB)
Mute Functions
Direct mute driven by pin SM
Digitally controlled softmute with 4 program-
mable time constants
ELECTRICAL CHARACTERISTICS (VS = 9V; Tamb =25
°C; RL = 10KΩ; all gains = 0dB; f = 1KHz;
unless otherwise specified).
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
INPUT SELECTOR
Rin
Input Resistance
all inputs except Phone
70
100
130
K
VCL
Clipping Level
2.2
2.6
VRMS
SIN
Input Separation
80
100
dB
GIN MIN
Min. Input Gain
-1
0
1
dB
GIN MAX
Max. Input Gain
14
dB
GSTEP
Step Resolution
2
dB
VDC
DC Steps
Adjacent Gain Step
0
mV
GMIN to GMAX
1mV
BEEP CONTROL
VRMS
Beep Level
350
mV
fBMIN
Lower Beep Frequency
600
Hz
fBMAX
Higher Beep Frequency
1.2
KHz
MIXING CONTROL
MLEVEL
Mixing Level
Source
0
dB
Source
-6
dB
Source
-12
dB
Beep/Phone
0
dB
TDA7403
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