TDA7403_02 Datasheet, PDF (4/25 Pages) STMicroelectronics – BASIC SIGNAL PROCESSOR

TDA7403
AUDIO PROCESSOR PART
Input Multiplexer
MPX input
Cassette stereo input
AM mono
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
INPUT SELECTOR
Rin
Input Resistance
VCL
Clipping Level
SIN
Input Separation
GIN MIN Min. Input Gain
GIN MAX Max. Input Gain
GSTEP
Step Resolution
VDC
DC Steps
VOLUME CONTROL
GMAX
Max Gain
AMAX
Max Attenuation
ASTEP
Step Resolution
EA
Attenuation Set Error
ET
Tracking Error
VDC
DC Steps
SOFT MUTE
AMUTE
Mute Attenuation
TD
Delay Time
VTHlow
VTHhigh
RPU
VPU
Low Threshold for SM Pin ⁽¹⁾
High Threshold for SM Pin
Internal Pull-up Resistor
Pull-up Voltage
Test Condition
all inputs except Phone
Adjacent Gain Step
GMIN to GMAX
G = -20 to 20dB
G = -60 to 20dB
Adjacent Attenuation Steps
From 0dB to GMIN
T1
T2
T3
T4
Min. Typ. Max. Unit
70
100 130
KΩ
2.2
2.6
VRMS
80
100
dB
-1
0
1
dB
14
dB
2
dB
0
mV
1
mV
20
dB
79
dB
1
dB
-1.25
0
1.25 dB
-4
0
3
dB
2
dB
0.1
3
mV
0.5
5
mV
70
100
dB
0.48
ms
0.96
ms
40.4
ms
324
ms
1
V
2.5
V
70
100 130
KΩ
4.7
V
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