ST TDA7719 User Manual
Features
■ Input multiplexer
– Multiple input configuration for different
application
■ Loudness
–2
– Programmable center frequency
– 15 dB with 1 dB steps
– Selectable high frequency boost
– Selectable flat-mode
■ Volume
– +15 dB to -15 dB with 1 dB step resolution
– Soft-step control with programmable blend
times
■ Bass
–2
– Center frequency programmable in 4 steps
– Q programmable 1.0/1.25/1.5/2.0
– DC gain programmable
– -15 to 15 dB range with 1 dB resolution
■ Middle
–2
– Center frequency programmable in 4 steps
– Q programmable 0.5/0.75/1.0/1.25
– -15 to 15dB range with 1dB resolution
■ Treble
–2
– 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
–2
cut off frequency
– 2 independent soft step level control,
■ Mute functions
nd
order frequency response
nd
order frequency response
nd
order frequency response
nd
order frequency response
nd
order low pass filter with programmable
TDA7719
3 band car audio processor
TSSOP28
– 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 BCMOSprocess and liner signal processing low distortion
and low noise are obtained.
Table 1. Device summary
Order code Package Packing
TDA7719 TSSOP28 Tube
TDA7719TR TSSOP28 Tape and reel
April 2009 Doc ID 13698 Rev 4 1/46
www.st.com
1
Contents TDA7719
Contents
1 Block circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.1 Front and rear selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.2 Direct path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.1 Loudness attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.2 Peak frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.3 High frequency boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.4 Flat mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4 SoftMute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Softstep volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6.1 Bass attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6.2 Bass center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6.3 Bass quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.4 DC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.7 Middle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.7.1 Middle attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.7.2 Middle center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.7.3 Middle quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.8 Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2/46 Doc ID 13698 Rev 4
TDA7719 Contents
4.8.1 Treble attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.8.2 Treble center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.9 Subwoofer Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.10 Softstep control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.11 DC offset detector and level meter option . . . . . . . . . . . . . . . . . . . . . . . . 25
4.12 DC offset detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.13 Level meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.14 Output gain control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.15 Audioprocessor testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.16 Test circuit (3 x QD + 1 x FD + DC offset detector) . . . . . . . . . . . . . . . . . 27
5I
2
C bus specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1.1 Receive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1.2 Transmission mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1.3 Reset condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Doc ID 13698 Rev 4 3/46
List of tables TDA7719
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. Input pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 7. Selector configuration matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 8. Available sources for mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 9. I
Table 10. Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 11. Input configuration / main selector (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 12. 2nd Source selector / direct path (1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 13. Mixing source / mixing gain (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 14. Mix control / level meter / dc offset detector configure (3) . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 15. Soft mute / others (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 16. SoftStep I (5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 17. SoftStep II / DC detector (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 18. Loudness (7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 19. Volume / output gain (8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 20. Treble filter (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 21. Middle filter (10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 22. Bass filter (11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 23. Subwoofer / middle / bass (12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 24. Speaker attenuation (LF/RF/LR/RR) (13-16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 25. Subwoofer attenuation (subwoofer L/subwoofer R) (17-18) . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 26. Testing audio processor 1 (19) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 27. Testing audio processor 2 (20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 28. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
2
C bus electrical characterisitics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4/46 Doc ID 13698 Rev 4
TDA7719 List of figures
List of figures
Figure 1. Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3. QD and FD configuration of QD4/FD4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 4. Block diagram of mixing stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 5. Loudness attenuation @ fP = 400 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6. Loudness center frequencies @ Attn. = 15 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 7. Loudness attenuation, f
Figure 8. SoftMute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 9. Bass Control @ fc = 80 Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 10. Bass center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 11. Bass quality factors @ gain = 14 dB, f
Figure 12. Bass normal and DC mode @ Gain = 14 dB, f
Figure 13. Middle control @ fc = 1 kHz, Q = 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 14. Middle center frequencies @ gain = 14d B, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 15. Middle quality factors @ gain = 14 dB, f
Figure 16. Treble Control @ fc = 17.5 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 17. Treble center frequencies @ gain = 14 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 18. Subwoofer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 19. DC offset detection circuit (simplified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 20. Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 21. Switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 22. I
2
C timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 23. TSSOP28 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
=2.4 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
c
= 80 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
c
c
= 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . 20
c
= 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Doc ID 13698 Rev 4 5/46
Block circuit diagram TDA7719
1 Block circuit diagram
Figure 1. Block circuit diagram
OUTL F
OUTRF
OUTLR
Mix
Mix
Mix
Mono Fader
Mono Fader
Mono Fader
OUTL2
OUTRR
Mix
Mono Fader
Subw oofer
OUTR2
LMOUT
Det ect o r
DC-Offset
Mono Fader
Mono Fader
Level Meter / Beep
LPF
DC_ERR /
VREF
WIN_TC /
BEEP
WIN_IN /
MUTE
Loudness Sof tMute Volu me Tr ebl e Midd le Bass
QD2L
QD3L
Main
QD1L
QD2R
Selec tor
QD1G
QD1R
QD4L
QD3R
Direct Path
QD2L
QD2G
QD2R
6/46 Doc ID 13698 Rev 4
DIGITAL CONTROL I2C BUS
Beep
SUPPLY
QD4R
Rea r
Selec tor
Input Multiplexer
QD3L
QD3G
QD3R
Mix
Selec tor
FDL+/ QD4L
FDR+/QD 4R
FDL-/Q D4G
FDR-/QD4G
VDD GND CREF SCL SD A
TDA7719 Pin description
2 Pin description
2.1 Pin connection
Figure 2. Pin connection (top view)
2.2 Pin description
Table 2. Pin description
No. Pin name Description I/O
1 QD1L / SE1L / MD3+ QD1 left input or SE1 left or MD3 positive input I/O
2 QD1R / SE1R / MD3- QD1 right input or SE1 right input or MD3 negative input I/O
3 QD1G / SE2L QD1 common input or SE2 left input I/O
4 QD2G / SE2R QD2 common input or SE2 right input I/O
5 QD2L / SE3L QD2 left input or SE3 left input I/O
6 QD2R / SE3R QD2 right input or SE3 right input I/O
7 QD3L QD3 left input I/O
8 QD3G QD3 common input I/O
9 QD3R QD3 right input I/O
Doc ID 13698 Rev 4 7/46
Pin description TDA7719
Table 2. Pin description (continued)
No. Pin name Description I/O
10 QD4L / FD4L+ / SE4L / MD1+
11 QD4G / FD4L- / SE4R / MD1-
12 QD4G / FD4R- / SE5L / MD2-
13 QD4R / FD4R+ / SE5R / MD2+
QD4 left input or FD4L positive input or SE4 left input or MD1 positive
input
QD4 common input or FD4L negative input or SE4 right input or MD1
negative input
QD4 common input or FD4R negative input or SE5 left input or MD2
negative input
QD4 right input or FD4R positive input or SE5 right input or MD2
positive input
I/O
I/O
I/O
I/O
14 CREF Reference capacitor O
15 GND Ground S
nd
16 OUTR2 Subwoofer output / 2
17 OUTL2 Subwoofer output / 2
right output O
nd
left output O
18 OUTRF Front right output O
19 OUTRR Rear right output O
20 OUTLR Rear left output O
21 OUTLF Front left output O
22 WinTC / VREF DC offset detector filter or Vref output O
2
23 MUTE I
C bus data I/O
24 VDD Supply S
25 SCL I2C bus clock I
2
26 SDA I
C bus data I/O
27 DC_ERR / LMOUT DC offset detector output or Level meter output O
28 WIN_IN / Beep DC offset detector input or Beep input (Mono Single-Ended input) I
8/46 Doc ID 13698 Rev 4
TDA7719 Electrical specifications
3 Electrical specifications
3.1 Thermal data
Table 3. Thermal data
Symbol Description Value Unit
R
th-j amb
Thermal resistance junction to ambient 114 °C/W
3.2 Absolute maximum ratings
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
V
V
in_max
T
T
S
amb
stg
Operating supply voltage 10.5 V
Maximum voltage for signal input pins 7 V
Operating ambient temperature -40 to 85 °C
Storage temperature range -55 to 150 °C
3.3 Electrical characteristics
VS = 8.5 V; T
specified
Table 5. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
Supply
= -40 to 85 °C; RL= 10 kΩ; all gains = 0 dB; f = 1 kHz; unless otherwise
amb
V
s
I
s
Input selector
R
in
V
CL
S
IN
Differential stereo inputs
R
in
CMRR1
CMRR2
e
No
Supply voltage 7.5 8.5 10 V
Supply current 35 mA
Input resistance All single ended inputs
Clipping level Input gain = 0 dB 2 V
(1)
70 100 130 kΩ
RMS
Input separation 100 dB
Input resistance Differential 70 100 130 kΩ
=1 VRMS@ 1 kHz 46 60 dB
Common mode rejection ratio
for main source
Common mode rejection ratio
nd
source
for 2
Output noise @ speaker
outputs
V
CM
1 VRMS@ 10 kHz 46 60 dB
V
CM=
V
=1 VRMS@ 1 kHz 46 60 dB
CM
20 Hz-20 kHz, A-weighted;
all stages 0dB
12 µV
Doc ID 13698 Rev 4 9/46
Electrical specifications TDA7719
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Loudness control
A
MAX
A
STEP
f
Peak
Volu m e con t ro l
Max attenuation 15 dB
Step resolution 1 dB
Peak frequency
f
P1
f
P2
f
P3
400 Hz
800 Hz
2400 Hz
G
A
A
V
MAX
MAX
STEP
E
A
E
T
DC
Max gain 15 dB
Max attenuation -15 dB
Step resolution 0.5 1 1.5 dB
Attenuation set error -0.75 0 +0.75 dB
Tracking error 2 dB
DC steps
Soft mute
A
MUTE
T
V
TH Low
V
TH High
R
V
D
PU
PU
Mute attenuation 80 100 dB
Delay time
Low threshold for SM pin 1 V
High threshold for SM pin 2.5 V
Internal pull-up resistor 32 45 58 kΩ
Internal pull-up Voltage 3.3 V
Bass control
Fc Center frequency
Q
BASS
C
RANGE
A
STEP
DC
GAIN
Quality factor
Control range ±14 ±15 ±16 dB
Step resolution 0.5 1 1.5 dB
Bass-DC-gain
Adjacent attenuation steps 0.1 3 mV
From 0 dB to G
MIN
0.5 5 mV
T1 0.48 ms
T2 0.96 ms
T3 8 ms
T4 16 ms
f
C1
f
C2
f
C3
f
C4
Q
1
Q
2
Q
3
Q
4
54 60 66 Hz
72 80 88 Hz
90 100 110 Hz
180 200 220 Hz
0.9 1 1.1
1.1 1.25 1.4
1.3 1.5 1.7
1.8 2 2.2
DC = off -1 0 +1 dB
DC = on, Gain =
±15 dB ±4.4 dB
10/46 Doc ID 13698 Rev 4
TDA7719 Electrical specifications
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Middle control
C
RANGE
A
STEP
f
c
Q
BASS
Treble control
Control range ±14 ±15 ±16 dB
Step resolution 0.5 1 1.5 dB
Center frequency
Quality factor
f
C1
f
C2
f
C3
f
C4
Q
1
Q
2
Q
3
Q
4
400 500 600 Hz
0.8 1 1.2 kHz
1.2 1.5 1.8 kHz
22.53 kHz
0.45 0.5 0.55
0.65 0.75 0.85
0.9 1 1.1
1.1 1.25 1.4
C
RANGE
A
STEP
f
c
Clipping level ±14 ±15 ±16 dB
Step resolution 0.5 1 1.5 dB
Center frequency
Speaker attenuators
A
A
A
STEP
A
MUTE
V
MIN
MAX
E
DC
E
Min attenuation -1 0 1 dB
Max attenuation -89 -79 -69 dB
Step resolution 0.5 1 1.5 dB
Mute attenuation 80 90 dB
Attenuation set error 2 dB
DC steps Adjacent attenuation steps 0.1 5 mV
Audio outputs
Clipping level
Output impedance 30 100
Output load resistance 2 kΩ
Output load capacitor 10 nF
DC voltage level 3.8 4.0 4.2 V
R
V
V
CL
OUT
R
L
C
L
DC
Subwoofer attenuator
f
C1
f
C2
f
C3
f
C4
81012kHz
10 12.5 15 kHz
12 15 18 kHz
14 17.5 21 kHz
d = 0.3%; Byte8_D6=1 2 V
d = 1%; Byte8_D6=0 2.2 V
RMS
RMS
Ω
G
MAX
A
A
STEP
A
MUTE
MAX
E
E
Max gain 141516 dB
Max attenuation -83 -79 -75 dB
Step resolution 0.5 1 1.5 dB
Mute attenuation 80 90 dB
Attenuation set error 2 dB
Doc ID 13698 Rev 4 11/46
Electrical specifications TDA7719
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
V
DC
Subwoofer lowpass
f
LP
DC offset detection circuit
V
th
t
sp
I
CHDCErr
I
DISDCErr
V
OutH
V
OutH
Level meter
DC steps Adjacent attenuation steps 0.1 5 mV
Lowpass corner frequency
f
f
f
LP1
LP2
LP3
72 80 88 Hz
108 120 132 Hz
144 160 176 Hz
V1 ±25 mV
Zero comp window size
V2 ±50 mV
V3 ±75 mV
V4 ±100 mV
11 µs
Max rejected spike length
22 µs
33 µs
44 µs
DCErr charge current 5 µA
DCErr discharge current 5 mA
DCErr high volotage 3.3 V
DCErr low voltage 100 mV
Vout Output voltage range 0 3.3 V
= 1 Vrms 1.6 V
V
V
LEVEL
T
DEL
Output level
Analog output delay time 2 µs
in
= AC grounded 0 V
V
in
General
BW = 20 Hz to 20 kHz
e
NO
Output noise
A-Weighted, all gain = 0 dB
BW = 20 Hz - 20 kHz
A-Weighted, output muted
S/N Signal to noise ratio
D Distortion V
S
C
1. When DC offset detector is not used, the impedance of mono single-ended input is 50 kΩ instead of 100 kΩ.
Channel separation left/right 90 dB
all gain = 0 dB, A-weighted;
= 2 V
V
o
RMS
IN
=1 V
all stages 0dB 0.01 %
RMS;
12 µV
6µV
104 dB
12/46 Doc ID 13698 Rev 4
TDA7719 Description
4 Description
4.1 Input configuration
4.1.1 Front and rear selector
The input stage (Main source and 2nd source) is configurable to adapt to different
application. There are 7 different configurations which provide different input structure and
different number of input sources as shown below.
● 4 x QD,
● 2 x QD + 3 x SE,
● 1 x QD + 5 x SE,
● 1 x QD + 3 x SE + 2 x MD,
● 3 x QD + 1 x FD,
● 3 x QD + 2 x SE,
● 1 x QD + 2 x SE + 1 x FD + 1 x MD,
● 1 x QD + 3 x SE + 1 x FD
Note: QD = Quasi-Differential, SE = Single-ended input, FD = Full Differential, MD = mono
Differential
The configuration of the input stage is controlled by ‘Input Configuration’ bits in I
table (Byte0 Bit5~Bit7). The table below shows the configuration of input pins in different
configurations.
Table 6. Input pin configuration
Pin Pin name
QD1L_SE1L
1
_MD3+
QD1R_SE1R
2
_MD3-
QD1G_SE2L QD1G SE2L
3
QD2G_SE2R QD2G
4
QD2L_SE3L QD2L SE3L
5
QD2R_SE3R QD2R SE3R SE3R SE3R QD2R QD2R SE3R SE3R
6
QD3L QD3L
7
QD3G QD3G QD3G QD3G QD3G QD3G QD3G QD3G QD3G
8
QD3R QD3R QD3R QD3R QD3R QD3R QD3R QD3R QD3R
9
QD4L_FD4+
10
_SE4L_MD1+
QD4G_FD4L
11
_SE4R_MD1-
QD4G_FD4R_S
12
E5L_MD2-
QD4R_FD4R+_
13
SE5R_MD2+
Configuration bits (Byte0 Bit7~Bit5)
"000" "001" "010" "011" "100" "101" "110" "111"
CFG0 CFG1 CFG2 CFG3 CFG4 CFG5 CFG6 CFG7
QD1L
QD1R SE1R SE1R SE1R QD1R QD1R MD3- SE1R
QD4L
QD4G QD4G SE4R MD1- FD4L- SE4R FD4L- FD4L-
QD4G QD4G SE5L
QD4R QD4R SE5R MD2+
SE1L
IN0
SE2R SE2R SE2R QD2G
IN1
QD3L
IN2
QD4L
IN3
IN0
IN4
IN1
IN2
IN3
SE1L
SE2L
SE3L
QD3L
SE4L
IN0
IN4
IN1
IN2
IN5
IN6
SE1L
SE2L
SE3L
QD3L
MD1+
MD2-
QD1L
IN0
QD1G QD1G SE2L
IN4
QD2L QD2L SE3L
IN1
QD3L
IN2
FD4L+
IN3
FD4R- SE5L
IN3
FD4R
+
QD1L
IN0
QD2G
IN1
QD3L
IN2
SE4L
IN3
SE5R FD4R+ FD4R+
MD3+
IN0
SE2R SE2R
IN1
QD3L
IN2
FD4L+
IN5
FD4R- FD4R-
IN6
IN7
IN4
IN1
IN2
IN3
2
C control
SE1L
SE2L
SE3L
QD3L
FD4L+
IN0
IN4
IN1
IN2
IN3
Doc ID 13698 Rev 4 13/46
Description TDA7719
With different input configuration, the input source can be selected with input selector
(Byte0/1 Bit0~Bit2). The following matrix defines the selector configuration of different input
sources dependant on the configuration bits.
Table 7. Selector configuration matrix
Selector Bits
000 001 010 011 100 101 110 111
(Byte0/1
Bit2~Bit0)
CFG0
CFG1
CFG2
CFG3
CFG4
CFG5
CFG6
CFG7
IN0IN1IN2IN3IN4IN5IN6IN7
QD1 QD2 QD3 QD4 NA NA NA NA
SE1 SE3 QD3 QD4 SE2 NA NA NA
SE1 SE3 QD3 NA SE2 SE4 SE5 NA
SE1 SE3 QD3 MD1/2 SE2 NA NA NA
QD1 QD2 QD3 FD NA NA NA NA
QD1 QD2 QD3 NA NA SE4 SE5 NA
NA SE3 QD3 FD SE2 NA NA MD3
SE1 SE3 QD3 FD SE2 NA NA NA
Note: In each configuration, only the light grey cells are allowed. The dark grey cells are not
allowed.
MD1/MD2 selection is defined by extra bit – ‘MD1/2 selection’ in I
2
C control table (Bit3 of
Byte0/1).
The input stage can be configured to 0dB or 3dB gain with I
2
C bus. The 0dB configuration
allows up to 2Vrms input signal level, while with 3dB gain, the internal signal will start to clip
when input signal level is higher than 1.414Vrms.
The Pin10~Pin13 can be configured as full differential input stage or quasi-differential input.
When it is configured as quasi-differential input, both Pin11 and Pin12 are used as the QD
common input pins. These two pins must be connected together externally in application. In
this case the input impedance of QD4 common is reduced to 50k
Ω (half of QD4 left and
right input). The diagram below shows both QD and FD configuration of QD4/FD4.
14/46 Doc ID 13698 Rev 4
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