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PDF TDA7416 Data sheet ( Hoja de datos )
| Número de pieza | TDA7416 | |
| Descripción | CARRADIO SIGNAL PROCESSOR | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TDA7416
CARRADIO SIGNAL PROCESSOR
s 3 STEREO INPUTS
s 1 PSEUDO DIFFERENTIAL STEREO INPUT
s VOLUME CONTROL
s 7 BAND EQUALIZER FILTER CONTROL
s HIGH PASS FILTER FOR SUBWOOFER
APPLICATION
s DIRECTMUTEANDSOFTMUTE
s 4 INDEPENDENT SPEAKER OUTPUTS
s SOFT STEP SPEAKER CONTROL
s SUBWOOFER OUTPUT WITH SOFT STEP
s 7 BAND SPECTRUM ANALYZER
s FULL MIXING CAPABILITY
s HPF2 WITH ZEROCROSS
s I2C-BUS INTERFACE
TQFP44
ORDERING NUMBER: TDA7416
DESCRIPTION
The device includes a high performance audiopro-
cessor with 7 bands equalizer and spectrum ana-
lyzer. The digital control allows a programming in
a wide range of all the filter characteristics.
PIN CONNECTION (Top view)
N.C.
N.C.
AUXR
PDL+
PD-
N.C.
PDR+
MIX
N.C.
GND
N.C.
44 43 42 41 40 39 38 37 36 35 34
1 33
2 32
3 31
4 30
5 29
6 28
7 27
8 26
9 25
10 24
11 23
12 13 14 15 16 17 18 19 20 21 22
ACINR
ACOUTL
ACINL
VREFOUT
VDD
AC2INL
AC2OUTL
FILOL
OUTLF
OUTLR
N.C.
TQFP44
September 2003
1/27
1 page  
TDA7416
Table 1. ELECTRICAL CHARACTERISTICS
(VS=9V; Tamb=25°C; RL=10kΩ; all gains=0dB; f=1kHz; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
INPUT SELECTOR
Rin Input Resistance
all single ended Inputs
70
VCL Clipping Level
1.8
SIN Input Separation
80
GIN MIN Min. Input Gain
-1
GIN MAX Max. Input Gain
13
GSTEP Step Resolution
0.5
VDC DC Steps
Adjacent Gain Steps
-5
GMIN to GMAX
-10
Voffset Remaining offset with Autozero
DIFFERENTIAL STEREO INPUTS
Rin Input Resistance (see Fig. 1)
Differential
70
CMRR Common Mode Rejection Ratio VCM = 1VRMS @ 1kHz
46
VCM = 1VRMS @ 10kHz
46
eNO Output-Noise @ Speaker-Outputs 20Hz - 20kHz, flat; all stages 0dB
MIXING CONTROL
MLEVEL Mixing Ratio
Main / Mix-Source
GMAX Max. Gain
13
AMAX Max. Attenuation
-83
ASTEP Attenuation Step
0.5
LOUDNESS CONTROL
ASTEP Step Resolution
0.5
AMAX Max. Attenuation
-21
fPeak Peak Frequency
fP1
180
fP2 360
fP3 540
fP4 720
VOLUME CONTROL
GMAX Max. Gain
18
AMAX Max. Attenuation
-83
ASTEP Step Resolution
0
EA Attenuation Set Error
G = -20 to +20dB
G = -80 to -20dB
-0.75
-4
ET Tracking Error
VDC DC Steps
Adjacent Attenuation Steps
From 0dB to GMIN
SOFT MUTE
AMUTE Mute Attenuation
80
Typ.
100
2.2
100
0
15
1
1
1
0.5
100
70
60
11
-6/-6
15
-79
1
1
-19
200
400
600
800
20
-79
0.5
0
0
0.1
0.5
100
Max. Unit
130 kΩ
VRMS
dB
1 dB
17 dB
1.5 dB
5 mV
10 mV
mV
130 kΩ
dB
dB
µV
dB
17 dB
-75 dB
1.5 dB
1.5 dB
-17 dB
220 Hz
440 Hz
660 Hz
880 Hz
22
-75
1
+0.75
3
2
3
5
dB
dB
dB
dB
dB
dB
mV
mV
dB
5/27
5 Page 
TDA7416
1.4 SoftMute
The digitally controlled SoftMute stage allows muting/demuting the signal with a I2C-bus programmable
slope. The mute process can either be activated by the SoftMute pin or by the I2C-bus. This slope is real-
ized in a special S-shaped curve to mute slow in the critical regions (see Figure 5).
For timing purposes the Bit0 of the I2C-bus output register is set to 1 from the start of muting until the end
of de-muting.
Figure 5. Soft Mute-Timing
Note: Please notice that a started Mute-action is always terminated and could not be interrupted by a change of the mute -signal.
1.5 SoftStep Volume and Speaker
When the speaker-level is changed audible clicks could appear at the output. The root cause of those
clicks could either be a DC-Offset before the speaker-stage or the sudden change of the envelope of the
audio signal. With the SoftStep-feature both kinds of clicks could be reduced to a minimum and are no
more audible. The blend-time from one step to the next is programmable in four steps.
Figure 6. SoftStep-Timing for Volume
1dB
0.5dB
-0.5dB
SS Time
-1dB
Note: For steps more than 0.5dB (Volume) or 1dB (Speaker) the SoftStep mode should be deactivated because it could generate a hard 1dB
step during blending.
11/27
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet TDA7416.PDF ] | |
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