TDA7417
Car radio audio processor
Features
Input Multiplexer
– QD: quasi-differential stereo inputs
– FD: full-differential stereo inputs
– Mono: Mono input
– SE1: stereo single-ended input
– SE2: stereo single-ended input
– In-Gain 0 to 15dB, 1dB step
– internal offset-cancellation (AutoZero)
• IN/OUT control
– Selectable full-differential stereo inputs or
Bass output
• Loudness
– 2nd order frequency response
– programmable center frequency
(400Hz/800Hz/2400Hz)
– 15dB with 1dB steps
– soft-step control with programmable blend
times
– selectable low & high frequency boost
• Volume
– +15dB to -79dB with 1dB step resolution
– soft-step control with programmable blend
times
– multi-step control
• Bass
– 2nd order frequency response
– center frequency programmable in 4 steps
(60Hz/80Hz/100Hz/200Hz)
– Q programmable 1.0/1.25/1.5/2.0
– DC gain programmable
– -15 to 15dB with 1dB resolution
– soft-step control with programmable blend
times
• Treble
– 2nd order frequency response
Table 1.
Device summary
•
TQFP32
•
•
•
– center frequency programmable in 4 steps
(10KHz/12.5KHz/15KHz/17.5KHz)
– -15 to 15dB with 1dB resolution
High pass
– 2nd order frequency response
– center frequency programmable in 3 steps
(80Hz/120Hz/160Hz)
Speaker
– independent soft step speaker controls,
+15dB to -79dB with 1dB steps
– Independent programmable mix input with
50% mixing ratio for front speakers
– direct mute
– multi-step control
Mute Functions
– digitally controlled SoftMute with 3
programmable mute-times
(0.48ms/0.96ms/123ms)
Description
The TDA7417 is an high performance signal
processor specifically designed for car radio
applications with fully integrated audio filters.
The digital control allows a full programming of
the audioprocessor in a wide range of filter
characteristics.
By using BICMOS-process low distortion and low
noise are obtained.
Order codes
Package
Packing
TDA7417
TQFP32
Tray
TDA7417TR
TQFP32
Tape & reel
September 2013
Rev 3
1/34
www.st.com
1
Contents
TDA7417
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
3
4
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description of the audioprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1
Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2
AutoZero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3
Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3.1
Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3.2
Peak Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3.3
Low & high frequency boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3.4
Flat Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4
SoftMute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5
Multistep and Softstep Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6
Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.7
2/34
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.6.1
Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.6.2
Center Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.6.3
Quality Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.6.4
DC Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.7.1
Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.7.2
Center Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.8
Highpass filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.9
Output Selector and Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.10
IN/OUT control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.11
Audioprocessor Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.12
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TDA7417
5
Contents
I2C Bus specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1
6
Interface Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.1
Receive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.2
Transmission Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.3
Reset Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Serial data assign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.1
Sub-address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.1.1
Main Source Selector (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1.2
Loudness (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.1.3
Volume/Mix volume/Fader LF/RF/LR/RR/SWL/SWR (2,8-14) . . . . . . . . 27
6.1.4
Softmute(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.1.5
Treble(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1.6
Bass(5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1.7
Highpass/Bass Frequency Control(6) . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1.8
Smoother /In/Out Control(7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1.9
Fader Multistep Control(15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.1.10
Testing (16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3/34
List of tables
TDA7417
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
4/34
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Registers of all subaddresses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Sub-address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Main source selector (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Loudness (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Volume/Mix volume/Fader LF/RF/LR/RR/SWL/SWR (2,8-14) . . . . . . . . . . . . . . . . . . . . . . 27
Softmute(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Treble(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Bass(5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Highpass/Bass Frequency Control(6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Smoother /In/Out Control(7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fader Multistep Control(15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Testing (16). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
TDA7417
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pins connection (Top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Loudness Attenuation @ fP = 400Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Loudness Center frequencies @ Attn. = 15dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Loudness Attenuation, fc=2.4kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Softmute-Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Soft Step and Multi Step timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bass Control @ fC = 80Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Bass center Frequencies @ Gain = 14dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Bass Quality factors @ Gain = 14dB, fC = 80Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Bass normal and DC Mode @ Gain = 14dB, fc = 80Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Treble Control @ fc = 17.5kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Treble Center Frequencies @ Gain = 14dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Highpass Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Output Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
IN/OUT control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TQFP32 Mechanical Data & Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5/34
Figure 1.
Block diagram
MonoDif
DifinG
Mono
Diff
Mixing
Volume
HPF
HPF
Bass
Treble
Softmute
SE2R
Volume
SE2L
Loudness
Gain/Auto-Zero
SE1L
SE1R
DifinR
Input Multiplexer
DifinL
DifinG
LFIN
RFIN
Block diagram
ACOUTL
ACOUTR
1
LRIN
RRIN
TDA7417
SWINL
SWINR
Block diagram
Balance
Amp
Mono Fader
Mix
OutLF
Mono Fader
Mix
OutRF
Mono Fader
OutLR
Mono Fader
OutRR
Mono Fader
SW L
Mono Fader
SW R
OUT/IN L+
IN/OUT
SW
OUT/IN LOUT/IN R+
OUT/IN R-
GND
Vref
VCC
Supply
6/34
Digital Control I2C-Bus
SCL
SDA
TDA7417
Pins description
OUTLR
OUTLF
MonoDif
DifinG
OUTRF
OUTRR
OUTSWR
Pins connection (Top view)
OUTSWL
32
31
30
29
28
27
26
25
23
OUTINR+
LFIN
3
22
RFIN
LRIN
4
21
RRIN
SWINL
5
20
SWINR
ACOUTIL
6
19
ACOUTR
SE1L
7
18
SE1R
SE2L
8
17
SE2R
2.1
Pins description
Table 2.
Pins description
9
10
11
12
13
14
15
16
QDR
2
QDGND
OUTINL+
QDL
OUTINR-
GNDa
24
SCL
1
SDA
OUTINL-
VCC
Figure 2.
Cref
2
Pins description
D06AU1640
NO.
Pin Name
Description
1
OUTINL-
Left- full-differential stereo input or bass differential output
I/O
2
OUTINL+
Left+ full-differential stereo input or bass differential output
I/O
3
LFIN
Front AC coupling left input
I
4
LRIN
Rear AC coupling left input
I
5
SWINL
SW AC coupling left input
I
6
ACOUTL
AC coupling left output
O
7
SE1L
Single-ended input 1 left channel
I
8
SE2L
Single-ended input 2 left channel
I
9
CREF
Reference capacitor
O
10
VCC
Supply
S
2C
bus data
I/O
I/O
11
SDA
I
12
SCL
I2C bus clock
I
13
GNDa
Ground
S
7/34
Pins description
Table 2.
TDA7417
Pins description (continued)
NO.
Pin Name
14
QDL
15
QDGND
16
Description
I/O
Pseudo differential stereo input left
I
Pseudo differential stereo input common
I
QDR
Pseudo differential stereo input right
I
17
SE2R
Single-ended input 2 right channel
I
18
SE1R
Single-ended input 1 right channel
I
19
ACOUTR
AC coupling right output
O
20
SWINR
SW AC coupling right input
I
21
RRIN
Rear AC coupling right input
I
22
RFIN
Front AC coupling right input
I
23
OUTINR+
Right+ Full-differential stereo input or Bass differential output
I/O
24
OUTINR-
Right- Full-differential stereo input or Bass differential output
I/O
25
OUTSWR
SW right output
O
26
OUTRR
Rear right output
O
27
OUTRF
Front right output
O
28
DifinG
Mono differential input common
I
29
MonoDif
Mono differential input
I
30
OUTLF
Front left output
O
31
OUTLR
Rear left output
O
32
OUTSWL
SW left output
O
8/34
TDA7417
Electrical specifications
3
Electrical specifications
3.1
Thermal data
Table 3.
Thermal data
Symbol
Description
RThj-case
3.2
Value
Unit
13
C/W
Value
Unit
9.5
V
Thermal resistance junction-case
Absolute maximum ratings
Table 4.
Absolute maximum ratings
Symbol
Parameter
Operating supply voltage
VS
Tamb
Operating ambient temperature
-40 to 85
°C
Tstg
Storage temperature range
-55 to 150
°C
VESD
ESD protection (Human Body Model)
±2000
V
VESD
ESD protection (Change Device Model)
±750
V
3.3
Electrical characteristics
Table 5.
Electrical characteristics
VS = 8.5V; Tamb= 25 C; RL= 10k; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SUPPLY
Vs
Supply voltage
8
8.5
9
V
Is
Supply current
25
34
45
mA
130
k
INPUT SELECTOR
Rin
Input resistance
All single ended inputs
70
100
VCL
Clipping level
THD = 1%
2
2.3
VRMS
SIN
Input separation
80
100
dB
GIN MIN
Min. input gain
-0.5
0
0.5
dB
GIN MAX
Max. input gain
14.5
15
15.5
dB
GSTEP
Step resolution
0.5
1
1.5
dB
VDC
Voffset
DC steps
Remaining offset with AutoZero
Adjacent gain steps
-5
1
5
mV
GMIN to GMAX
-15
4
15
mV
0.5
mV
9/34
Electrical specifications
Table 5.
TDA7417
Electrical characteristics (continued)
VS = 8.5V; Tamb= 25 C; RL= 10k; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Differential
70
100
130
k
VCM=1 VRMS@ 1kHz
46
60
dB
VCM=1 VRMS@ 10kHz
46
60
dB
Differential
40
56
DIFFERENTIAL STEREO INPUTS
Rin
CMRR
Input resistance
Common mode rejection ratio
DIFFERENTIAL MONO INPUTS
Rin
CMRR
Input resistance
Common mode rejection ratio
72
k
VCM =1 VRMS@ 1kHz
40
60
dB
VCM =1 VRMS@ 10kHz
40
60
dB
-6/-6
dB
MIXING CONTROL
MLEVEL
Mixing ratio
Main / Mix Source
GMAX
Max gain
13
15
17
dB
AMAX
Max attenuation
-83
-79
-75
dB
ASTEP
Step resolution
0.5
1
1.5
dB
LOUDNESS CONTROL
AMAX
Max attenuation
14
15
16
dB
ASTEP
Step resolution
0.5
1
1.5
dB
fP1
360
400
440
Hz
fP2
720
800
880
Hz
fP3
2200
2400
2600
Hz
fPeak
Peak
frequency(1)
VOLUME CONTROL
GMAX
Max gain
14
15
16
dB
AMAX
Max attenuation
-83
-79
-75
dB
ASTEP
Step resolution
EA
Attenuation set error
ET
Tracking error
VDC
DC steps
0.5
1
1.5
dB
G = -15to +15dB
-1
0
1
dB
G = -79 to -15dB
-4
0
3
dB
2
dB
Adjacent attenuation steps
-3
0.1
3
mV
From 0dB to GMIN
-7
0.5
7
mV
80
100
SOFT MUTE
AMUTE
TD
Mute attenuation
Delay time
T1
0.48
1
ms
T2
0.96
2
ms
123
170
ms
T3
10/34
dB
70
TDA7417
Table 5.
Electrical specifications
Electrical characteristics (continued)
VS = 8.5V; Tamb= 25 C; RL= 10k; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
fC1
54
60
66
Hz
fC2
72
80
88
Hz
fC3
90
100
110
Hz
fC4
180
200
220
Hz
Q1
0.9
1
1.1
Q2
1.1
1.25
1.4
Q3
1.3
1.5
1.7
Q4
1.8
2
2.2
BASS CONTROL
Fc
QBASS
Center frequency (1)
Quality factor (1)
CRANGE
Control range
14
±15
±16
dB
ASTEP
Step resolution
0.5
1
1.5
dB
DCGAIN
Bass-DC-gain
DC = off
-1
0
+1
dB
DC = on
3.5
4.4
5.5
dB
TREBLE CONTROL
CRANGE
Control range
14
±15
±16
dB
ASTEP
Step resolution
0.5
1
1.5
dB
fC1
8
10
12
kHz
fC2
10
12.5
15
kHz
fC3
12
15
18
kHz
fC4
14
17.5
21
kHz
fHP1
72
80
88
Hz
fHP2
108
120
132
Hz
fHP3
144
160
176
Hz
fc
Center frequency (1)
HPF
fHP
Highpass corner frequency
(1)
SPEAKER ATTENUATORS
GMAX
Max gain
14
15
16
dB
AMAX
Max attenuation
-83
-79
-75
dB
ASTEP
Step resolution
0.5
1
1.5
dB
AMUTE
Mute attenuation
80
90
EE
VDC
Attenuation set error
DC steps
Adjacent attenuation steps
-5
0.1
THD = 1%
2
2.3
Output impedance
5
30
RL
Output load resistance
2
CL
Output load capacitor
dB
2
dB
5
mV
AUDIO OUTPUTS
VCL
ROUT
Clipping level
VRMS
100
W
k
10
nF
11/34
Electrical specifications
Table 5.
Electrical characteristics (continued)
VS = 8.5V; Tamb= 25 C; RL= 10k; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol
VDC
TDA7417
Parameter
Test Condition
Min.
Typ.
Max.
Unit
4.05
4.25
4.4
V
AC coupling input resistance
35
50
65
k
AC coupling output resistance
5
50
100
Differential
70
100
130
k
VCM =1 VRMS@ 1kHz
40
60
dB
VCM =1 VRMS@ 10kHz
40
60
dB
DC voltage level
AC COUPLING
RACIN
RACOUT
IN/OUT CONTROL
Rin
Input resistance
CMRR
Common mode rejection ratio
VCL(IN)
In clipping level
1.9
2
VRMS
VCL(OUT)
Out clipping level
1.9
2
VRMS
ROUT
Output impedance
50
RIMPED
High impedance
200
VDC
DC voltage level
3.1
VIH
High input voltage for SDA,SCL
2.5
VIL
VOL
I2C
3.3
100
k
3.5
V
Low input voltage for SDA,SCL
0.7
V
Low output voltage for SDA
0.4
V
Tr
SDA and SCL rise time
300
ns
Tf
SDA and SCL fall time
300
ns
0.9
us
TIMING
Tsdah
SCL falling to SDA input hold time
0
Tsdas
SDA input setup time to SCL rising
100
V
ns
GENERAL
eNO
Output noise
BW=20Hz to 20 kHz all
gain = 0dB, HPF = off
12
25
µV
BW=20Hz to 20 kHz
Output muted
6
15
µV
Signal to noise ratio
all gain = 0dB flat;
Vo =2VRMS
D
Distortion
VIN=1VRMS; all stages 0dB
HPF = off
SC
Channel separation left/right
S/N
95
100
0.01
80
dB
0.1
90
%
dB
1. Min and max values are calculated according to simulation results; functionality is guaranteed by measuring a directly
correlated parameter
Note:
12/34
It is not recommended that gain control and Softstep control be adjusted at the same time if
they are in the same byte.
It is not allowed to change multistep on/off or softstep on/off during the process of multistep
or softstep.
TDA7417
Description of the audioprocessor
4
Description of the audioprocessor
4.1
Input stages
In the basic configuration, one stereo quasi-differential, one selectable full-differential and
two single ended stereo inputs are available. As Figure 3 shown.
Quasi-differential stereo Input (QD)
The QD input is implemented as a buffered quasi-differential stereo stage with 100k inputimpedance at each input. The attenuation is fixed to -3.5dB in order to adapt the incoming
signal level.
Single-ended stereo input (SE1, SE2)
The input-impedance at each input is 100k and the attenuation is fixed to -3.5dB for
incoming signals.
Full differential stereo Input (FD)
The FD input is implemented as a selectable full-differential stereo stage with 50k inputimpedance at each input or high impedance status. The attenuation is fixed to -3.5dB in
order to adapt the incoming signal level.The high impedance status is 100k
Figure 3.
Input stage
Quasi-differential
SEL1/SER1
InGain
SEL2/SER2
Full-differential
Mute
4.2
AutoZero
The AutoZero allows a reduction of the number of pins as well as external components by
canceling any offset generated by or before the In-Gain-stage (Please notice that externally
generated offsets, e.g. generated through the leakage current of the coupling capacitors,
are not canceled).
The auto-zeroing is started every time the input source is changed and needs max. 0.32ms
for the alignment. To avoid audible clicks the Audio processor is muted before the loudness
stage during this time.
13/34
Description of the audioprocessor
TDA7417
AutoZero-Remain
In some cases, for example if the µP is executing a refresh cycle of the IIC-Busprogramming, it is not useful to start a new AutoZero-action because no new source is
selected and an undesired mute would appear at the outputs. For such applications, it can
be switched in the AutoZero-Remain-Mode (Bit 6 of the subaddress-byte). If this bit is set
to high, the AutoZero will not be invoked and the old adjustment-value remains.
4.3
Loudness
There are four parameters programmable in the loudness stage:
4.3.1
Attenuation
Figure 4 shows the attenuation as a function of frequency at fP = 400Hz.
Figure 4.
4.3.2
Loudness Attenuation @ fP = 400Hz
Peak Frequency
Figure 5 shows the four possible peak-frequencies at 400, 800 and 2400Hz.
Figure 5.
14/34
Loudness Center frequencies @ Attn. = 15dB
TDA7417
4.3.3
Description of the audioprocessor
Low & high frequency boost
Figure 6 shows the different Loudness shapes in low & high frequency boost.
Figure 6.
4.3.4
Loudness Attenuation, fc=2.4kHz
Flat Mode
In flat mode the loudness stage works as a 0dB to -15dB attenuator.
4.4
SoftMute
The digitally controlled Softmute stage allows muting/demuting the signal with a I2C-bus
programmable slope. The mute process can be activated by the I2C-bus. This slope is
realized in a special S-shaped curve to mute slow in the critical regions (see Figure 7).
Figure 7.
Softmute-Timing
SOFT MUTE
+SIGNAL
REF
-SIGNAL
AC00061
Note:
Time
Please notice that a started Mute-action is always terminated and could not be interrupted
by a change of the mute -signal
15/34
Description of the audioprocessor
4.5
TDA7417
Multistep and Softstep Volume
When the volume-level is changed audible clicks could appear at the output. The root cause
of those clicks
could either be a DC-Offset before the volume-stage or the sudden change of the envelope
of the audio signal. With the Multistep and Softstep feature both kinds of clicks could be
reduced to a minimum and are no more audible. Multistep feature supports N dB change,
each step is 1dB;During 1dB transition, it will have 32 divisions if choosing softstep. The
blend-time from one step to the next is user selectable.
Figure 8.
Soft Step and Multi Step timing
Soft Step (S.S.)
1dB
32 divisions
Blend
Time
Multi Step (M.S.)
Multi Soft Step (M.S.S.)
1dB
(2dB)
1dB
32 divisions
Blend
Time
NdB
Blend
Time
NdB
AC00062
16/34
TDA7417
4.6
Description of the audioprocessor
Bass
There are four parameters programmable in the bass stage:
4.6.1
Attenuation
Figure 9 shows the attenuation as a function of frequency at a center frequency of 80Hz.
Figure 9.
4.6.2
Bass Control @ fC = 80Hz, Q = 1
Center Frequency
Figure 10 shows the eight possible center frequencies 60, 80, 100 and 200Hz.
Figure 10. Bass center Frequencies @ Gain = 14dB, Q = 1
17/34
Description of the audioprocessor
4.6.3
TDA7417
Quality Factors
Figure 11 shows the four possible quality factors 1, 1.25, 1.5 and 2.
Figure 11.
4.6.4
Bass Quality factors @ Gain = 14dB, fC = 80Hz
DC Mode
It is used for cut only for shelving filter. In this mode the DC-gain is increased by 4.4dB. In
addition the programmed center frequency and quality factor is decreased by 25% which
can be used to reach alternative center frequencies or quality factors. Figure 12 shows DC
mode.
Figure 12. Bass normal and DC Mode @ Gain = 14dB, fc = 80Hz
Note: The center frequency, Q and DC-mode can be set fully independently.
18/34
TDA7417
4.7
Description of the audioprocessor
Treble
There are two parameters programmable in the treble stage:
4.7.1
Attenuation
Figure 13 shows the attenuation as a function of frequency at a center frequency of
17.5kHz.
Figure 13. Treble Control @ fc = 17.5kHz
4.7.2
Center Frequency
Figure 14 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.
Figure 14. Treble Center Frequencies @ Gain = 14dB
19/34
Description of the audioprocessor
4.8
TDA7417
Highpass filter
The highpass filter has 2 order filter characteristics with programmable cut-off frequency
(80/120/160Hz)
Figure 15. Highpass Control
4.9
Output Selector and Mixing
The output-selector allows different sources to connect to the front output. The setup of the
output selector is shown in Figure 16. A Mixing-stage is placed after the front speakerattenuator and can be set to mixing-mode.
In normal mode, switch (sw1) turns to down and main signal is directly outputted through
front pin. In the mixing mode, switch (sw1) turns up, mono differential signal and main signal
are mixed with ratio -6/-6dB. Having a full volume-attenuator for the mix-signal, the stage
offers a wide flexibility to adapt the mixing levels.
Figure 16. Output Selector
Mix_out
Mono
Attenuator
Differential
Main
-6/-6
dB
Attenuator
sw
1
Rear
Attenuator
Attenuator
20/34
SW
TDA7417
4.10
Description of the audioprocessor
IN/OUT control
IN/OUT control offers selectable full-differential stereo input or Bass output as figure15
shown. When used as full-differential input, bass buffer output is disabled, full-differential
input switch sw1(sw4) closes and sw2(sw3) closes. When used as bass output, fulldifferential input switch sw1(sw4) opens and sw2(sw3) still closes, single ended bass output
signal is converted to full differential output. IN/OUT control supports high impedance status
when bass buffer output is disabled, full-differential input switch sw1(sw4) opens and
sw2(sw3) closes.
Figure 17. IN/OUT control
3.5dB
Enable
BassOUTL
OUT/INL+
1
+
D1
-
–1
+D
1
-
-3.5dB
FDL
OUT/INL-
50k
sw1
sw2
50k
sw3
50k
+
-
sw4
50k
AC00063
4.11
Audioprocessor Testing
In the test mode, which can be activated by setting bit D7 of the IIC subaddress byte and bit
D0 of the testing audioprocessor byte, several internal signals are available at the QDL pin.
In this mode, the input resistance of 100kOhm is disconnected from the pin. Internal signals
available for testing are listed in the data-byte specification. External clock can be available
at the SE1R pin.
21/34
Description of the audioprocessor
4.12
TDA7417
Test circuit
Figure 18. Test circuit
47μF
47μF
47μF
47μF
100nF
OUTSWL OUTSL OUTLF
32
1
31
47μF
47μF
100nF
MonoDif DiffG OUTRF OUTRR OUTSWL
30
29
28
27
26
4.7μF OUTINL-
OUTINR-
470nF
OUTINL+
OUTINR+
3
22
4
21
LFIN
470nF
LRIN
470nF
SWINL
5
470nF
RRIN
470nF
SWINR
470nF
19
6
100nF
RFIN
20
ACOUTL
100nF
4.7μF
23
2
4.7μF
4.7μF
25
24
ACOUTR
7
18
8
17
16
SE1L
SE2L
Cref
9
11
10
Vcc
SDA
12
SCL
13
GNDa
14
15
QDL QDGND
SE1R 100nF
SE2R
100nF
QDR
10μF
100nF
10μF
10μF
100nF
100nF
AC00064
22/34
I2C Bus specification
TDA7417
5
I2C Bus specification
5.1
Interface Protocol
The interface protocol comprises:
5.1.1
S
?
a start condition (S)
?
a chip address byte (the LSB determines read/write transmission)
?
a subaddress byte
?
a sequence of data (N-bytes + acknowledge)
?
a stop condition (P)
?
the max. clock speed is 500kbits/s
?
3.3V logic compatible
Receive Mode
1
0
0 0 1
0
0
R/W
ACK
TS
AZ
AI
A4
A3
A2
A1
A0
ACK
X
X
DATA
ACK
P
S = Start
R/W = "0" -> Receive Mode (Chip can be programmed by P)
"1" -> Transmission Mode (Data could be received by P)
ACK = Acknowledge
P = Stop
TS = Testing mode
AZ = Auto zero remain
AI = Auto increment
5.1.2
S
Transmission Mode
1
0
0
0
1
0
0
R/W
ACK
X
X
X
X
X
SM
ACK
P
SM = Soft mute activated for main channel
X = Not Used
The transmitted data is automatic updated after each ACK. Transmission can be repeated
without new chip address.
5.1.3
Reset Condition
A Power-On-Reset is invoked if the Supply-Voltage is below than 3.5V. After that the
following data is written automatically into the registers of all subaddresses:
Table 6.
Registers of all subaddresses
MSB
1
LSB
1
1
1
1
1
1
0
23/34
Serial data assign
TDA7417
6
Serial data assign
6.1
Sub-address
Table 7.
Sub-address
MSB
LSB
FUNCTION
I2
I1
I0
A4
A3
A2
A1
A0
Testing Mode
off
on
0
1
AutoZero Remain
off
on
0
1
Auto Increment Mode
Off
On
0
1
24/34
0
0
0
0
0
Main Source Selector
0
0
0
0
1
Loudness
0
0
0
1
0
Primary Volume
0
0
0
1
1
Softmute/Clock Generator
0
0
1
0
0
Treble Control
0
0
1
0
1
Bass Control
0
0
1
1
0
Highpass/Bass Frequency control
0
0
1
1
1
Smoother/In/Out control
0
1
0
0
0
Mix volume
0
1
0
0
1
Mono Fader LF
0
1
0
1
0
Mono Fader RF
0
1
0
1
1
Mono Fader LR
0
1
1
0
0
Mono Fader RR
0
1
1
0
1
Mono Fader SWL
0
1
1
1
0
Mono Fader SWR
0
1
1
1
1
Fader Multistep control
1
0
0
0
0
Test control
TDA7417
Serial data assign
6.1.1
Main Source Selector (0)
Table 8.
Main source selector (0)
MSB
LSB
FUNCTION
D7
D6
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
D5
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D4
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D3
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D2
D1
D0
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
Source Selector
QD
SE1
SE2
FD
Mute
Input Gain
0dB
1dB
2.dB
3dB
4dB
5dB
6dB
7dB
8dB
9dB
10dB
11dB
12dB
13dB
14dB
15dB
Auto Zero
on
off
25/34
Serial data assign
TDA7417
6.1.2
Loudness (1)
Table 9.
Loudness (1)
MSB
LSB
FUNCTION
D7
D6
D5
0
0
1
1
0
1
0
1
26/34
D4
0
1
0
1
D3
D2
D1
D0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Attenuation
0dB
-1dB
-2.dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-10dB
-11dB
-12dB
-13dB
-14dB
-15dB
Center Frequency
Flat
400Hz
800Hz
2400Hz
High Boost
on
off
Softstep
on
off
TDA7417
Serial data assign
6.1.3
Volume/Mix volume/Fader LF/RF/LR/RR/SWL/SWR (2,8-14)
Table 10.
Volume/Mix volume/Fader LF/RF/LR/RR/SWL/SWR (2,8-14)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
:
0
0
0
:
1
1
1
0
0
0
:
0
0
0
:
0
0
1
0
0
0
:
0
1
1
:
1
1
x
0
0
0
:
1
0
0
:
1
1
x
0
0
0
:
1
0
0
:
1
1
x
0
0
1
:
1
0
0
:
1
1
x
0
1
0
:
1
0
1
:
0
1
x
Gain/Attenuation
0dB
1dB
2.dB
:
15dB
-0dB
-1dB
:
-78dB
-79dB
mute
Softstep
on
off
0
1
6.1.4
Softmute(3)
Table 11.
Softmute(3)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
0
1
0
0
0
0
1
1
1
1
x
x
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
x
Soft Mute
on
off
Soft Mute Time
0.48ms
0.96ms
123ms
Softstep Time
0.160ms
0.321ms
0.642ms
1.28ms
2.56ms
5.12ms
10.24ms
20.48ms
Not used
Not used
27/34
Serial data assign
TDA7417
6.1.5
Treble(4)
Table 12.
Treble(4)
MSB
D7
LSB
D6
0
0
1
1
D5
D4
D3
D2
D1
D0
0
0
:
0
0
1
1
:
1
1
1
1
:
0
0
0
0
:
1
1
1
1
:
0
0
0
0
:
1
1
1
1
:
0
0
0
0
:
1
1
1
0
:
1
0
0
1
:
0
1
0
1
0
1
0
1
6.1.6
Bass(5)
Table 13.
Bass(5)
MSB
D7
28/34
Gain/Attenuation
-15dB
-14dB
:
-1dB
0dB
0dB
+1dB
:
+14dB
+15dB
Treble Center Frequency
10kHz
12.5kHz
15kHz
17.5kHz
Volume Multistep Control
on
off
LSB
D6
0
0
1
1
0
1
FUNCTION
D5
0
1
0
1
D4
D3
D2
D1
D0
0
0
:
0
0
1
1
:
1
1
1
1
:
0
0
0
0
:
1
1
1
1
:
0
0
0
0
:
1
1
1
1
:
0
0
0
0
:
1
1
1
0
:
1
0
0
1
:
0
1
FUNCTION
Gain/Attenuation
-15dB
-14dB
:
-1dB
0dB
0dB
+1dB
:
+14dB
+15dB
Bass Q Factor
1
1.25
1.5
2
Softstep Control
on
off
TDA7417
Serial data assign
6.1.7
Highpass/Bass Frequency Control(6)
Table 14.
Highpass/Bass Frequency Control(6)
MSB
D7
LSB
D6
D5
D4
D3
D2
D1
0
0
1
1
D0
0
1
0
1
0
1
0
0
1
0
0
1
0
1
x
0
1
x
x
6.1.8
Smoother /In/Out Control(7)
Table 15.
Smoother /In/Out Control(7)
MSB
D7
LSB
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
1
0
0
1
0
1
0
1
x
0
1
x
FUNCTION
Bass Frequency
60Hz
80Hz
100Hz
200Hz
Bass DC Mode
on
off
Front Highpass Frequency
80Hz
120Hz
160Hz
Rear Highpass Frequency
80Hz
120Hz
160Hz
Not used
FUNCTION
Mixing Enable
on
off
Smoother Filter
on
off
AC coupling
on
off
In Out Control
in
out
High Impedance
Front Highpass Control
on
bypass
Rear Highpass Control
on
bypass
Not used
29/34
Serial data assign
TDA7417
6.1.9
Fader Multistep Control(15)
Table 16.
Fader Multistep Control(15)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
30/34
Fader LF Multistep
on
off
Fader RF Multistep
on
off
Fader LR Multistep
on
off
Fader RR Multistep
on
off
Fader SWL Multistep
on
off
Fader SWR Multistep
on
off
Mixing to Left Front Speaker
on
off
Mixing to Right Front Speaker
on
off
TDA7417
Serial data assign
6.1.10
Testing (16)
Table 17.
Testing (16)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1
0
1
x
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Audio Processor Testing Mode
off
on
Test Multiplexer
Right Bass opmos2 out
Right Bass Vref
Left InGain
Right Bass opmos21 out
Left Volume
Left Loudness
Left Bass
Left Treble
REF5.5V
Left Highpass out
1.95V
VBG 1.26V
SSCLK
CLK200
SMCLK
Clock Source
external
internal
Clock Fast Mode
on
off
Not used
31/34
Package information
7
TDA7417
Package information
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 19. TQFP32 Mechanical Data & Package Dimensions
mm
inch
OUTLINE AND
MECHANICAL DATA
DIM.
MIN.
TYP.
MAX.
A
MIN.
TYP.
1.60
A1
0.05
A2
1.35
B
0.30
C
0.09
0.063
0.15
0.002
0.006
1.40
1.45
0.053
0.055
0.057
0.37
0.45
0.012
0.015
0.018
0.20
0.004
9.00
0.354
D1
7.00
0.276
D3
5.60
0.220
e
0.80
0.031
E
9.00
0.354
E1
7.00
0.276
E3
5.60
0.220
0.45
0.60
0.75
0.018
Weight: 0.20gr
0.008
D
L
MAX.
0.024
L1
1.00
K
0˚(min.), 3.5°(typ.), 7°(max.)
0.030
TQFP32 (7 x 7 x 1.40mm)
0.039
D
A
D1
A2
D3
24
A1
17
25
16
0.10mm
.004
B
E
E1
B
E3
Seating Plane
9
32
8
1
C
L
L1
e
K
TQFP32
0060661 C
32/34
TDA7417
8
Revision history
Revision history
Table 18.
Document revision history
Date
Revision
Changes
28-Feb-2007
1
Initial release.
26-Jun-2007
2
Corrected typo errors.
22-Sep-2013
3
Updated Disclaimer.
33/34
TDA7417
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