TDA7449 Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
TDA7449 Datasheet PDF : 19 Pages
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TDA7449
Table 5. Electrical Characteristcs (continued)
SPEAKER ATTENUATORS
CRANGE
Control Range
76
dB
SSTEP
Step Resolution
0.5
1
1.5
dB
EA
Attenuation Set Error
AV = 0 to -20dB
-1.5
0
1.5
dB
AV = -20 to -56dB
-2
0
2
dB
VDC
DC Step
adjacent attenuation steps
0
3
mV
Amute
Mute Attenuation
80
100
dB
AUDIO OUTPUTS
VCLIP
Clipping Level
d = 0.3%
2.1 2.6
VRMS
RL
Output Load Resistance
2
KΩ
RO
Output Impedance
10
40
70
W
VDC
DC Voltage Level
3.8
V
GENERAL
ENO
Output Noise
All gains = 0dB;
BW = 20Hz to 20KHz flat
5
15
µV
Et
Total Tracking Error
AV = 0 to -24dB
0
1
dB
AV = -24 to -47dB
0
2
dB
S/N
Signal to Noise Ratio
All gains 0dB; VO = 1VRMS ;
106
dB
SC
Channel Separation Left/Right
80
100
dB
d
Distortion
AV = 0; VI = 1VRMS ;
0.01 0.08 %
BUS INPUT
VIL
Input Low Voltage
1
V
VIH
Input High Voltage
3
V
IIN
Input Current
VIN = 0.4V
-5
5
µA
VO
Output Voltage SDA
Acknowledge
IO = 1.6mA
0.4
0.8
V
Note: 1. The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device.
2. BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
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