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PDF TDA7719TR Data sheet ( Hoja de datos )
| Número de pieza | TDA7719TR | |
| Descripción | 3 band car audio processor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TDA7719
3 band car audio processor
Features
■ Input multiplexer
www.DataSheet4U.com– Multiple input configuration for different
application
■ Loudness
– 2nd order frequency response
– Programmable center frequency
– 15dB with 1dB steps
– Selectable high frequency boost
– Selectable flat-mode
■ Volume
– +15dB to -15dB with 1dB step resolution
– Soft-step control with programmable blend
times
■ Bass
– 2nd order frequency response
– Center frequency programmable in 4 steps
– Q programmable 1.0/1.25/1.5/2.0
– DC gain programmable
– -15 to 15dB range with 1dB resolution
■ Middle
– 2nd order frequency response
– Center frequency programmable in 4 steps
– Q programmable 0.5/0.75/1.0/1.25
– -15 to 15dB range with 1dB resolution
■ Treble
– 2nd order frequency response
– Center frequency programmable in 4 steps
– -15 to 15dB range with 1dB resolution
■ Speaker
– 4 independent soft step speaker controls
– 0dB to -79dB with 1dB steps
– Direct mute
■ Subwoofer
– 2nd order low pass filter with
programmable cut off frequency
– 2 independent soft step level control,
TSSOP28
■ Mute functions
– Direct mute
– Digitally controlled SoftMute with 4
programmable mute-times
■ Offset detection
– Offset voltage detection circuit for on-board
power amplifier failure diagnosis
■ Level meter
– Provide rectified level voltage of main
source signal (before loudness)
■ Rear seat selector
– Full source selector for rear seat output
■ Mixing selector
Description
The TDA7719 is a high performance signal
processor specifically designed for car radio
applications. The device includes a high
performance audioprocessor with fully integrated
audio filters and new Soft Step architecture. The
digital control allows programming in a wide range
of filter characteristics. By the use of BCMOS-
process and liner signal processing low distortion
and low noise are obtained.
Table 1. Device summary
Order code
Package
TDA7719
TSSOP28
TDA7719TR
TSSOP28
Packing
Tube
Tape and reel
January 2008
Rev 2
1/45
www.st.com
1
1 page  
TDA7719
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
www.DataSheet4UF.ciogmure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
QD and FD configuration of QD4/FD4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Block diagram of mixing stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Loudness attenuation @ fP = 400Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Loudness center frequencies @ Attn. = 15dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Loudness attenuation, fc=2.4kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Softmute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Bass Control @ fC = 80Hz, Q = 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Bass center frequencies @ gain = 14dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Bass quality factors @ gain = 14dB, fC = 80Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Bass normal and DC mode @ Gain = 14dB, fc = 80Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Middle control @ fC = 1 kHz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Middle center frequencies @ gain = 14dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Middle quality factors @ gain = 14dB, fc = 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Treble Control @ fC = 17.5kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Treble center frequencies @ gain = 14dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Subwoofer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DC offset detection circuit (simplified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TSSOP28 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5/45
5 Page 
TDA7719
Electrical specifications and characteristics
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Middle control
CRANGE
ASTEP
Control range
Step resolution
fc(2) Center frequency
www.DataSheet4U.com
QBASS(2) Quality factor
Treble control
CRANGE
ASTEP
Clipping level
Step resolution
fc(2) Center frequency
Speaker attenuators
AMIN
AMAX
ASTEP
AMUTE
EE
VDC
Min attenuation
Max attenuation
Step resolution
Mute attenuation
Attenuation set error
DC steps
Audio outputs
VCL Clipping level
ROUT
RL
CL
VDC
Output impedance
Output load resistance
Output load capacitor
DC voltage level
Subwoofer attenuator
GMAX
AMAX
ASTEP
AMUTE
EE
Max gain
Max attenuation
Step resolution
Mute attenuation
Attenuation set error
fC1
fC2
fC3
fC4
Q1
Q2
Q3
Q4
fC1
fC2
fC3
fC4
Adjacent attenuation steps
d = 0.3%; Byte8_D6=1
d = 1%; Byte8_D6=0
Min. Typ. Max. Unit
±14 ±15 ±16
0.5 1 1.5
400 500 600
0.8 1 1.2
1.2 1.5 1.8
2 2.5 3
0.45 0.5 0.55
0.65 0.75 0.85
0.9 1 1.1
1.1 1.25 1.4
dB
dB
Hz
kHz
kHz
kHz
±14 ±15 ±16
0.5 1 1.5
8 10 12
10 12.5 15
12 15 18
14 17.5 21
dB
dB
kHz
kHz
kHz
kHz
-1 0 1
-89 -79 -69
0.5 1 1.5
80 90
2
0.1 5
dB
dB
dB
dB
dB
mV
2 VRMS
2.2 VRMS
30 100
Ω
2 kΩ
10 nF
3.8 4.0 4.2
V
14 15 16
-89 -79 -69
0.5 1 1.5
80 90
2
dB
dB
dB
dB
dB
11/45
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TDA7719TR.PDF ] | |
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