TDA7439 Datasheet, PDF (4/19 Pages) STMicroelectronics – THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7439
Table 5. Electrical Characteristcs (continued)
SPEAKER ATTENUATORS
C_RANGE Control Range
70
76
82
dB
SSTEP Step Resolution
0.5
1
1.5
dB
E_A
Attenuation Set Error
A_V = 0 to -20dB
-1.5
0
1.5
dB
A_V = -20 to -56dB
-2
0
2
dB
V_DC DC Step
adjacent attenuation steps
0
3
mV
A_mute Mute Attenuation
80 100
dB
AUDIO OUTPUTS
V_CLIP Clipping Level
d = 0.3%
2.1 2.6
VRMS
R_L Output Load Resistance
2
KΩ
RO Output Impedance
10
40
70
Ω
V_DC DC Voltage Level
3.5 3.8 4.1
V
GENERAL
E_NO Output Noise
All gains = 0dB;
BW = 20Hz to 20KHz flat
5
15
µV
E_t
Total Tracking Error
A_V = 0 to -24dB
0
1
dB
A_V = -24 to -47dB
0
2
dB
S/N Signal to Noise Ratio
All gains 0dB; V_O = 1V_RMS ;
95 106
dB
S_C Channel Separation Left/Right
80 100
dB
d
Distortion
A_V = 0; V_I = 1V_RMS ;
0.01 0.08 %
BUS INPUT
V_IL Input Low Voltage
1
V
V_IH Input High Voltage
3
V
I_IN
Input Current
V_IN = 0.4V
-5
0
5
µA
V_O Output Voltage SDA Acknowledge I_O = 1.6mA
0.4 0.8
V
Notes: 1. The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device.
2. BASS, MIDDLE and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
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