TDA7345 Datasheet, PDF (6/18 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX

TDA7345
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
SPEAKER ATTENUATORS (REC_OUT_L, REC_OUT_R)
Min. Typ.
C_range
Control Range
S_STEP
Step Resolution
E_A
Attenuation set error
A_MUTE
Output Mute Attenuation
V_DC
DC Steps
adjacent att. steps
SPEAKER ATTENUATORS (LOUT, ROUT)
35 37.5
0.5 1.25
-1.5
80
90
-3
0
C_range
Control Range
S_STEP
Step Resolution
Av = 0 to -40dB
E_A
Attenuation set error
Av = 0 to 20dB
Av = -20 to -60dB
V_DC
A_MUTE
DC Steps
Output Mute Attenuation
adjacent att. steps
AUDIO OUTPUTS (LOUT, ROUT, REC_OUT_L, REC_OUT_R)
70
75
0.5 1.25
-1.5
0
-3
0
-3
0
80
90
V_OCL
R_OUT
V_OUT
GENERAL
Clipping Level
Output resistance
DC Voltage Level
d = 0.3%
2
2.5
100 200
4.2
4.5
N_O(OFF) Output Noise (OFF)
N_O(MOV) Output Noise (Movie)
N_O(MUS) Output Noise (Music)
N_O(MON) Output Noise (Simulated)
d
Distorsion
S_C
Channel Separation
BUS INPUTS
B_W = 20Hz to 20KHz
Output LOUT, ROUT,
Output: REC-OUT-L,
REC-OUT-R
Mode =Movie ,
B_W = 20Hz to 20KHz
R_out and L_out measurement
Mode = Music ,
B_W = 20Hz to 20KHz,
R_out and L_out measurement
Mode = Simulated,
B_W = 20Hz to 20KHz
Rout and Lout measurement
Av = 0 ; Vin = 1Vrms
8
8
30
30
30
0.02
60
70
V_IL
Input Low Voltage
V_IH
Input High Voltage
I_IN
Input Current
VO
Output Voltage SDA
Acknowledge
IO = 1.6mA
3
-5
0.4
Note:
(1) Bass and Treble response: The center frequency and the resonance quality can be choosen by
the external circuitry. A standard first order bass response can be realized by a standard feedback network.
(2) The peack voltage of the two input signals must be less then ^VS:
2
(Lin + Rin) peak
•
AVin
<
VS
2
Max. Unit
40
dB
1.75 dB
1.5
dB
dB
3
mV
dB
1.75 dB
1.5
dB
2
dB
3
mV
dB
Vrms
300
Ω
4.8
V
15 µVrms
15 µVrms
µVrms
µVrms
µVrms
0.1
%
dB
1
V
V
+5
µA
0.8
V
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