TDA7342_06 Datasheet, PDF (8/20 Pages) STMicroelectronics – Digitally controlled audio processor

Electrical specifications
TDA7342
Table 4.
Electrical characteristics (continued)
(V_S = 9V; R_L = 10KΩ; R_g = 50Ω; T_amb = 25°C; all gains = 0dB; f = 1KHz. Refer
to the test circuit, unless otherwise specified.)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
Zero crossing threshold
V_{TH (1)}
A_MUTE Mute attenuation
V_DC DC Step
Soft mute
WIN = 11
WIN = 10
WIN = 01
WIN = 00
0dB to Mute
20
mV
40
mV
80
mV
160
mV
80 100
dB
0
3 mV
A_MUTE Mute attenuation
T_DON ON Delay time
T_DOFF OFF current
V_THSM
R_INT
V_SMH
V_SML
Soft mute threshold
Pull-up resistor (pin 21)
(pin 21) Level high
(pin 21) Level low
Bass control
45 60
dB
C_CSM = 22nF; 0 to -20dB; I =
I_MAX
0.7
1
1.7 ms
C_CSM = 22nF; 0 to -20dB; I =
I_MIN
20
35
55
ms
V_CSM= 0V; I = I_MAX
25 50 75 μA
V_CSM= 0V; I = I_MIN
1
μA
1.5 2.5 3.5 V
(2)
35 50 65 KΩ
3.5
V
Soft mute active
1
V
B_BOOST
B_CUT
A_step
R_g
Max bass boost
Max bass cut
Step Resolution
Internal Feedback
Resistance
15 18 20 dB
-8.5 -10 -11.5 dB
1
2
3 dB
45 65 85 KΩ
Treble control
C_RANGE Control Range
A_step Step Resolution
Speaker attenuators
±13 ±14 ±15 dB
1
2
3 dB
C_RANGE Control range
A_step Step resolution
A_MUTE Output mute attenuation
E_A Attenuation set error
V_DC DC Steps
Data word = XXX11111
Adjacent attenuation steps
35 37.5 40 dB
0.5 1.25 2.00 dB
80 100
dB
1.25 dB
0
3 mV
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