STMicroelectronics TDA7407 Schematic [ru]
Features
● Fully integrated signal processor optimized
for car radio applications
● Fully programmable by i
● Includes audioprocessor, stereo decoder
with noise blanker and multipath detector
● Softmute function
● Programmable roll-off compensation
● No external components
2
c bus
TDA7407
Advanced car signal processor
LQFP44
Description
The TDA7407 is the newcomer of the CSP family
introduced by TDA7460/61. It uses the same
innovative concepts and design technologies
allowing fully software programmability through
2
I
C bus and overall cost optimisation for the
system designer.
Order codes
Part number Package Packing
TDA7407 LQFP44 Tray
TDA7407TR LQFP44 Tape and reel
The device includes a three band audioprocessor
with configurable inputs, and absence of external
components for filter settings, a last generation
stereo decoder with multipath detector, and a
sophisticated stereo blend and noise cancellation
circuitry. Strength points of the CSP approach are
flexibility and overall cost/room saving in the
application, combined with high performances.
January 2007 Rev 3 1/46
www.st.com
1
Contents TDA7407
Contents
1 Block diagram and pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Audio processor part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 List of features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.1 Input multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.2 Volume control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.3 Bass control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.4 Mid control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.5 Treble control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.6 Speaker control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.7 Mute functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Stereo decoder part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Notes to the characteristics: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Noise blanker part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Multipath detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Description of the audioprocessor part . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.1 Input multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.2 Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.3 AutoZero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.4 AutoZero remain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.5 Multiplexer output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.6 Softmute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1.7 BASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1.8 Attenuation (80Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.9 Center frequency (60, 70, 80, 100Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.10 Quality factors (1, 1.25, 1.5, 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.11 DC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.12 MID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.13 Attenuation (1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2/46
TDA7407 Contents
5.1.14 Center frequency (500, 1k, 1.5k, 2k Hz) . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.15 Quality factor (2 at 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.16 Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.17 Attenuation (17.5kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.18 Center frequency (10, 12.5, 15, 17.5kHz) . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.19 AC coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.20 Speaker Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Functional description of the stereo decoder . . . . . . . . . . . . . . . . . . . . . . 26
5.2.1 Stereo decoder Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.2.2 Ingain + Infilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.3 Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.4 De-emphasis and Highcut. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.5 PLL and pilot tone detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.6 Field strength control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.7 LEVEL Input and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2.8 Stereoblend control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2.9 Highcut control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2.10 Functional description of the noiseblanker . . . . . . . . . . . . . . . . . . . . . . . 29
5.2.11 Trigger path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.12 Automatic noise controlled threshold adjustment (ATC) . . . . . . . . . . . . 30
5.3 Automatic threshold control mechanism . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.1 Automatic threshold control by the stereoblend voltage . . . . . . . . . . . . 31
5.3.2 Over deviation detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.4 Functional description of the multipath detector . . . . . . . . . . . . . . . . . . . . 31
5.4.1 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.4.2 Quality detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.4.3 AF Search Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.5 Test mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6 I2C Bus interface description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2 Auto increment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3/46
Contents TDA7407
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4/46
TDA7407 List of tables
List of tables
Table 1. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 3. Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Audio processor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 6. Stereo decoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 7. Noise blanker electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 8. Multipath electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 9. Quality detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 10. Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 11. Transmitted data (send mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 12. Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 13. Input selector (subaddress 0H). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 14. Volume and speaker attenuation (subaddress 1H, 4H, 5H, 6H, 7H) . . . . . . . . . . . . . . . . . 36
Table 15. Treble filter (subaddress 2H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 16. Bass filter (subaddress 3H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 17. Soft mute and bass programming (subaddress 8H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 18. Stereo decoder (subaddress 9H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 19. Noiseblanker (subaddress AH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 20. High Cut (subaddress BH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 21. Field strength Control (subaddress CH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 22. Configuration (subaddress DH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 23. Stereo decoder adjustment (subaddress EH). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 24. Testing (subaddress FH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 25. New quality / control (subaddress 10H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 26. Mid filter (subaddress 11H). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 27. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5/46
List of figures TDA7407
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3. Vn timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 4. Trigger threshold vs.VPEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 5. Deviation controlled trigger adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 6. Fieldstrength controlled trigger adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 7. Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 8. Softmute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 9. Bass control @ fc = 80Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 10. Bass center @ Gain = 14dB, Q =1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 11. Bass quality factors @ Gain =14dB, fc = 80Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 12. Bass normal and DC mode @ Gain = 14dB, fc = 80Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 13. Mid control @ fc=1kHz, Q=1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 14. Mid center frequency @ Gain=14dB, Q1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 15. Mid Q factor @ fc=1kHz, Gain=14dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 16. Treble control @ fc = 17.5KHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 17. Treble center frequencies @ Gain = 14dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 18. Block diagram of the stereo decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 19. Signals during stereo decoder's softmute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 20. Internal Stereoblend characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 21. Relation between internal and external LEVEL voltage and setup of stereoblend . . . . . . . 28
Figure 22. High cut characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 23. Block Diagram of the Noiseblanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 24. Block diagram of the multipath detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 25. Mute control logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6/46
TDA7407 Block diagram and pin connections
1 Block diagram and pin connections
Figure 1. Block diagram
Figure 2. Pin connections (top view)
TAPE R
TAPE L
CREF
44 43 42 413940 38 37 36 35 34
1
CDR
CDL
N.C.
AFS
AM
N.C.
2
3
4
5
6
7
8
9
10
12 13 14 15 16
N.C.
MPX
LEVEL
CDROUT
CDGND
CDLOUT
PHONE-
PHONE+
REF
ACINLF
V
MPIN
ACINRR
ACINRF
171118 19 20 21 22
N.C.
MUXL
MPOUT
ACINLR
N.C.
N.C.
MUXR
ACOUTL
ACOUTR
QUAL
SMUTE
33
N.C.
32
OUT LF
31
OUT RF
30
OUT LR
29
OUT RR
28
N.C.
27
V
26
GND
25
N.C.
24
SDA
23
SCL
PINCON-TDA7407
S
7/46
Block diagram and pin connections TDA7407
Table 1. Pin Description
N. Name Function Type
1 CDR CD right channel input I
2 CDROUT CD output right channel O
3 CDGND CD input common ground I
4 CDLOUT CD output left channel O
5 CDL CD input left channel I
6nc -
7 PH - Differential phone input - I
8 PH + Differential phone input + I
9 AFS AFS drive I
10 AM AM input I
11 nc -
12 MPX FM stereo decoder input I
13 nc -
14 LEVEL Level input stereo decoder I
15 MPIN Multipath input I
16 MPOUT Multipath output O
17 nc -
18 MUXL Multiplexer output left channel O
19 MUXR Multiplexer output right channel O
20 nc -
21 QUAL Stereo decoder quality output O
22 SMUTE Soft mute drive I
2
23 SCL I
24 SDA I
C clock line I
2
C data line I/O
25 nc -
26 GND Supply ground S
27 VS Supply voltage S
28 nc -
29 OUTRR Right rear speaker output O
30 OUTLR Left rear speaker output O
31 OUTRF Right front spaeaker output O
32 OUTLF Left front speaker output O
33 nc -
34 ACOUTR Pre-speaker AC output right channel O
35 ACOUTL Pre-speaker AC output left channel O
8/46
TDA7407 Block diagram and pin connections
Table 1. Pin Description (continued)
N. Name Function Type
36 nc -
37 ACINLR Pre-speaker input left rear channel I
38 ACINRR Pre-speaker input right rear channel I
39 ACINRF Pre-speaker input right front channel I
40 ACINLF Pre-speaker input left front channel I
41 VREF Reference voltage output O
42 CREF Reference capacitor pin S
43 TAPEL Tape input left I
44 TAPER Tape input right I
Pin type legend: I = Input ; O = Output; I/O = Input/Output; S = Supply; nc = not connected
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
V
S
T
amb
T
stg
Table 3. Supply
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
S
SVRR Ripple rejection @ 1KHz
Table 4. Thermal data
Symbol Parameter Value Unit
R
th-j pins
1.1 ESD
Operating supply voltage 10.5 V
Operating ambient temperature range -40 to 85 °C
Operating storage temperature range -55 to 150 °C
Supply voltage 7.5 9 10 V
Supply current VS = 9V 30 35 40 mA
Audioprocessor (all filters flat) 50 60 dB
Stereo decoder + audioprocessor 45 55 dB
Thermal resistance junction to pins (max) 85 °C/W
All pins are protected against ESD according to the MIL883 standard.
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Audio processor part TDA7407
2 Audio processor part
2.1 List of features
2.1.1 Input multiplexer
● Quasi differential CD and cassette stereo input
● AM mono input
● Phone differential input
● Multiplexer signal after In-Gain available at separate pins
2.1.2 Volume control
● 1dB attenuator
● Max. gain 15dB
● Max. attenuation 79dB
2.1.3 Bass control
nd
● 2
● Q-factor programmable in 4 steps
● Center frequency programmable in 4(5) steps
● DC gain programmable
● ±15 x 1dB steps
order frequency response
2.1.4 Mid control
nd
● 2
● Q-factor programmable in 2 steps
● Center frequency programmable in 4 steps
● ±15 x 1dB steps
order frequency response
2.1.5 Treble control
nd
● 2
● Center frequency programmable in 4 steps
● ±15 x 1dB steps
order frequency response
2.1.6 Speaker control
● 4 independent speaker controls in 1dB steps
● max gain 15dB
● max. attenuation 79dB
10/46
TDA7407 Audio processor part
2.1.7 Mute functions
● Direct mute
● Digitally controlled softmute with 4 programmable mute time.
2.2 Electrical characteristics
.
Table 5. Audio processor electrical characteristics
(V
= 9V; T
S
specified)
Symbol Parameter Test condition Min. Typ. Max. Unit
Input selector
R
Input resistance all inputs except phone 70 100 130 KΩ
in
Clipping level 2.2 2.6 V
CL
Input separation 80 100 dB
IN
Min. input gain -1 0 1 dB
Max. input gain 13 15 17 dB
Step resolution 0.5 1 1.5 dB
STEP
DC steps
DC
G
G
IN MAX
G
V
V
S
IN MIN
= 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise
amb
Adjacent gain step -5 0.5 5 mV
GMIN to GMAX -10 5 10 mV
RMS
Differential CD stereo input
R
Input resistance
in
CMRR
Common mode rejection
ratio
Output noise @ speaker
e
N
outputs
Differential phone input
Input resistance Differential 40 56 KΩ
R
in
CMRR
Common mode rejection
ratio
Volu m e cont r o l
G
A
A
Max gain 13 15 17 dB
MAX
Max attenuation 70 79 dB
MAX
Step resolution 0.5 1 1.5 dB
STEP
E
Attenuation set error
A
Differential 70 100 130 KΩ
Common mode 70 100 130 KΩ
V
= 1V
CM
= 1V
V
CM
20Hz to 20KHz flat; all stages
0dB
= 1V
V
CM
V
= 1V
CM
@ 1KHz 45 70 dB
RMS
@ 10KHz 45 60 dB
RMS
615mV
@ 1KHz 40 70 dB
RMS
@ 10KHz 40 60 dB
RMS
G = -20 to 20dB -1.25 0 1.25 dB
G = -60 to 20dB -4 0 3 dB
E
Tracking error 2 dB
T
11/46
Audio processor part TDA7407
Table 5. Audio processor electrical characteristics (continued)
(V
= 9V; T
S
= 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise
amb
specified)
Symbol Parameter Test condition Min. Typ. Max. Unit
V
DC
DC steps
Soft mute/AFS
A
MUTE
V
TH low
V
TH high
R
Mute attenuation 80 100 dB
T
Delay time
D
Low threshold for SM-/AFS- Pin
High threshold for SM-/AFS-Pin 2.5 V
Internal pull-up resistor 45 KΩ
PD
Bass control
C
RANGE
A
Control range ±13 ±15 ±17 dB
Step resolution 0.5 1 1.5 dB
STEP
Center frequency
f
C
Adjacent attenuation steps 0.1 3 mV
From 0dB to GMIN 0.5 5 mV
T1 0.48 ms
T2 0.96 ms
T3 40.4 ms
T4 324 ms
(1)
f
C1
f
C2
f
C3
54 60 66 Hz
63 70 77 Hz
72 80 88 Hz
1V
100
f
C4
90
(150)
(2)
110 Hz
Q
1
Q
Q
BASS
Quality factor
2
Q
3
Q
4
DC = off -1 0 1 dB
DC
GAIN
Bass-DC-gain
DC = on 3.5 4.4 5.5 dB
MID control
C
RANGE
A
Control range ±13 ±15 ±17 dB
Step resolution 0.5 1 1.5 dB
STEP
f
C1
f
f
Center frequency
C
C2
f
C3
f
C4
12/46
0.911.1
1.1 1.25 1.4
1.3 1.5 1.7
1.822.2
450 500 550 Hz
0.911.1kHz
1.35 1.5 1.65 kHz
1.822.2kHz
TDA7407 Audio processor part
Table 5. Audio processor electrical characteristics (continued)
(V
= 9V; T
S
= 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise
amb
specified)
Symbol Parameter Test condition Min. Typ. Max. Unit
Q
MID
Quality factor
Treble con t ro l
C
RANGE
A
1. The SM pin is active low (mute = 0)
2. See note in programming section
Control range ±13 ±15 ±17 dB
Step resolution 0.5 1 1.5 dB
STEP
Center frequency
f
C
Q
1
Q
2
f
C1
f
C2
f
C3
f
C4
0.911.1
1.822.2
81012KHz
10 12.5 15 KHz
12 15 18 KHz
14 17.5 21 KHz
13/46
Stereo decoder part TDA7407
SN
3 Stereo decoder part
Table 6. Stereo decoder electrical characteristics
(V
= 9V; de-emphasis time constant = 50μs,V
S
fm= 1KHz, Gv = 6dB. T
= 25°C; unless otherwise specified)
amb
Symbol Parameter Test condition Min. Typ. Max. Unit
= 500mV (75KHz deviation),
MPX
V
R
G
MPX input level Gv = 3.5dB 0.5 1.25 V
in
Input resistance 70 100 130 KΩ
in
Min. input gain 1.5 3.5 4.5 dB
MIN
GMAX Max. input gain 8.5 11 12.5 dB
GSTEP Step resolution 1.75 2.5 3.25 dB
SVRR
Supply voltage ripple
rejection
Vripple = 100mV; f = 1KHz 35 60 dB
α Max. channel separation 30 50 dB
THD Total harmonic distortion 0.02 0.3 %
--------------
N
ratio
A-weighted, S = 2V
RMS
80 91 dB
Signal plus noise to noise
+
Mono / stereo switch
V
PTHST1
V
PTHST0
V
PTHMO1
V
PTHMO0
Pilot threshold voltage for Stereo, PTH = 1 10 15 25 mV
Pilot threshold voltage for Stereo, PTH = 0 15 25 35 mV
Pilot threshold voltage for Mono, PTH = 1 7 12 17 mV
Pilot threshold voltage for Mono, PTH = 1 10 19 25 mV
PLL
Δf/f Capture range 0.5 %
RMS
De-emphasis and highcut
t
HC50
t
HC75
t
HC50
t
HC75
De-emphasis time constant
De-emphasis time constant
Highcut time constant
Highcut time constant
Bit 7, Subadr, 10 = 0,
V
Bit 7, Subadr, 10 = 1,
V
Bit 7, Subadr, 10 = 0,
V
Bit 7, Subadr, 10 = 1,
V
Stereo blend and highcut control
REF5V Internal reference voltage 4.7 5 5.3 V
T
CREF5V
L
Gmin
L
Gmax
Temperature coefficient 3300 ppm
Min. LEVEL gain -1 0 1 dB
Max. LEVEL gain 8 10 12 dB
14/46
LEVEL
LEVEL
LEVEL
LEVEL
>> V
>> V
>> V
>> V
HCH
HCH
HCL
HCL
25 50 75 μs
50 75 100 μs
100 150 200 μs
150 225 300 μs
TDA7407 Stereo decoder part
Table 6. Stereo decoder electrical characteristics (continued)
(V
= 9V; de-emphasis time constant = 50μs,V
S
fm= 1KHz, Gv = 6dB. T
= 25°C; unless otherwise specified)
amb
Symbol Parameter Test condition Min. Typ. Max. Unit
= 500mV (75KHz deviation),
MPX
L
Gstep
VSBL
VSBL
VSBL
VHCH
VHCH
VHCH
VHCL
VHCL
VHCL
LEVEL gain step resolution 0.3 0.67 1 dB
Min. voltage for mono 25 29 33 %REF5V
min
Min. voltage for mono 54 58 62 %REF5V
max
Step resolution 2.2 4.2 6.2 %REF5V
step
Min. voltage for NO highcut 38 42 46 %REF5V
min
Min. voltage for NO highcut 62 66 70 %REF5V
max
Step resolution 5 8.4 12 %REF5V
step
Min. voltage for full highcut 12 17 22 %VHCH
min
Max. voltage for full highcut 28 33 38 %VHCH
max
Step resolution 2.2 4.2 6.2 %VHCH
step
Carrier and harmonic suppression at the output
α19 Pilot signal f = 19KHz 40 50 dB
α38 Subcarrier f = 38KHz 75 dB
α57 Subcarrier f = 57KHz 62 dB
α76 Subcarrier f = 76KHz 90 dB
Intermodulation (Note 1)
α2f
α3f
mod
mod
= 10KHz, f
= 13KHz, f
= 1KHz 65 dB
spur
= 1KHz 75 dB
spur
Traffic Ratio (Note 2)
α57 Signal f = 57KHz 70 dB
SCA - Subsidiary communications authorization (note 3)
α67 Signal f = 67KHz 75 dB
ACI - Adjacent channel interference (note 4)
α114 Signal f = 114KHz 95 dB
α190 Signal f = 190KHz 84 dB
15/46
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