TDA7434 Datasheet, PDF (4/10 Pages) STMicroelectronics – BASIC FUNCTION AUDIO PROCESSOR

TDA7434
ELECTRICAL CHARACTERISTICS (T_amb = 25°C, V_S = 9V, R_L = 10kΩ, R_g = 50Ω,
all variable gains = 0dB, f = 1kHz, unless otherwise specified.)
Symbol
Parameter
INPUT SELECTOR
R_IN
Input Resistance
V_CL
Clipping Level
S_IN
Input Separation
A_MUTE Input Mute Attenuation
V_DC
Mute DC Step
MUTE AT AM INPUT (*)
V_IL
Input Low Voltage
VOLUME CONTROL
G_MAX
Max. Gain
A_MAX
Max Attenuation
A_step
Step Resolution
E_A
Attenuation Set Error
E_T
Tracking Error
V_DC
DC Steps
LOUDNESS CONTROL
A_MAX
Control Range
A_step
Step Resolution
R_{L OUD}
Internal Resistor
BASS CONTROL
BRANGE Max. Bass boost
B_CUT
Max. Bass cut
A_Step
Step Resolution
R_B
Internal Feedback Resistance
TREBLE CONTROL
CRANGE Control Range
A_step
Step Resolution
SPEAKER ATTENUATORS
C_RANGE Control Range
A_step
Step Resolution
A_MUTE Output Mute Attenuation
E_A
Attenuation Set Error
V_DC
DC Steps
AUDIO OUTPUTS
V_CLIP
Clipping Level
G_OUT
R_L
Output Gain (fixed)
Output Load Resistance
C_L
R_OUT
VDC
Output Load Capacitance
Output Impedance
DC Voltage Level
Test Condition
d ≤ 0.3%
AM not selected
Note 2
G = +20 to -20dB
G = -20 to -60dB
G = +20 to -60dB
Adjacent Attenuation Steps,
Range from 0 to -79dB
From 0dB to -79dB
From 0 to -24dB
From 0 to -24dB
Adjacent Attenuation Steps
d = 0.3%
AC - connected
DC connected to GND
Min. Typ. Max. Unit
70
100 130
kΩ
1.3
1.6
Vrms
70
90
dB
70
95
dB
0.2
10
mV
0.4
V
30.5
32
33.5
dB
75
79
83
dB
0.5
1
1.5
dB
-1
0
+1
dB
-2
2
dB
2
dB
0.1
4
mV
0.5
10
mV
14
15
16
dB
0.5
1
1.5
dB
37
50
63
kΩ
15.5 +18
20
dB
-20
-18 -15.5 dB
1
2
3
dB
48
65
82
kΩ
±13 ±14 ±15
dB
1
2
3
dB
36
37.5
39
dB
0.5
1
1.5
dB
70
90
dB
1
dB
0.1
4
mV
2
2.5
Vrms
3.5
4
4.5
dB
3
kΩ
5
10
nF
30
100
Ω
3.7
4.0
4.3
V
(*) The mute function can be activated without using the I2C bus by grounding the AM input when AM is not selected. This causes the input
multiplexer to select the reference voltage instead of an input signal.
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