TDA7407TR

TDA7407 Advanced car signal processor Features ● Fully integrated signal processor optimized for car radio applications ● Fully programmable by i2c bus ● Includes audioprocessor, stereo decoder with noise blanker and multipath detector ● Softmute function ● Programmable roll-off compensation ● No external components 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 I2C bus and overall cost optimisation for the system designer. Order codes (s) Part number ct TDA7407 TDA7407TR o r P e du c u d ) s t( 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. e t le o s b O - o r P Package Packing LQFP44 Tray LQFP44 Tape and reel t e l o s b O January 2007 Rev 3 1/46 www.st.com 1 Contents TDA7407 Contents 1 Block diagram and pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1 2 ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Audio processor part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 2.2 List of features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3 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 c u d ) s t( Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 o r P Stereo decoder part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 e t le 3.1 Notes to the characteristics: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 o s b O - 4 Noise blanker part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5 Multipath detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.1 5.1.1 r P e 5.1.3 5.1.4 t e l o O 2/46 Input multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 u d o 5.1.2 bs ) s ( ct Description of the audioprocessor part . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 AutoZero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 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 TDA7407 Contents 5.2 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 5.3 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 c u d o s b O - 5.3.1 Automatic threshold control by the stereoblend voltage . . . . . . . . . . . . 31 5.3.2 Over deviation detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ) s ( ct Functional description of the multipath detector . . . . . . . . . . . . . . . . . . . . 31 u d o 5.4.1 5.4.2 r P e 5.4.3 6 o r P Automatic threshold control mechanism . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.4 5.5 e t le ) s t( Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Quality detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 AF Search Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 6.2 Auto increment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 s b O t e l o Test mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 I2C Bus interface description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 8 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 3/46 Contents 9 TDA7407 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 c u d e t le ) s ( ct u d o r P e t e l o s b O 4/46 o s b O - o r P ) s t( TDA7407 List of tables 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. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Audio processor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Stereo decoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Noise blanker electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Multipath electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Quality detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Transmitted data (send mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Subaddress (receive mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Input selector (subaddress 0H). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Volume and speaker attenuation (subaddress 1H, 4H, 5H, 6H, 7H) . . . . . . . . . . . . . . . . . 36 Treble filter (subaddress 2H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Bass filter (subaddress 3H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Soft mute and bass programming (subaddress 8H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Stereo decoder (subaddress 9H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Noiseblanker (subaddress AH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 High Cut (subaddress BH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Field strength Control (subaddress CH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Configuration (subaddress DH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Stereo decoder adjustment (subaddress EH). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Testing (subaddress FH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 New quality / control (subaddress 10H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Mid filter (subaddress 11H). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 5/46 List of figures TDA7407 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. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Vn timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Trigger threshold vs.VPEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Deviation controlled trigger adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Fieldstrength controlled trigger adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Softmute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Bass control @ fc = 80Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bass center @ Gain = 14dB, Q =1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bass quality factors @ Gain =14dB, fc = 80Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bass normal and DC mode @ Gain = 14dB, fc = 80Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Mid control @ fc=1kHz, Q=1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Mid center frequency @ Gain=14dB, Q1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Mid Q factor @ fc=1kHz, Gain=14dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Treble control @ fc = 17.5KHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Treble center frequencies @ Gain = 14dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Block diagram of the stereo decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Signals during stereo decoder's softmute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Internal Stereoblend characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Relation between internal and external LEVEL voltage and setup of stereoblend . . . . . . . 28 High cut characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Block Diagram of the Noiseblanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Block diagram of the multipath detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Mute control logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 c u d e t le ) s ( ct u d o r P e t e l o s b O 6/46 o s b O - o r P ) s t( TDA7407 1 Block diagram and pin connections Block diagram and pin connections Figure 1. Block diagram c u d ACINLR N.C. ACOUTL ACOUTR VREF ACINRR CREF ACINLF TAPE L 41 ACINRF TAPE R 42 40 39 38 37 36 35 34 o r P 4 30 OUT LR CDL 5 29 OUT RR N.C. 6 28 N.C. PHONE- 7 27 VS PHONE+ 8 26 GND AFS 9 25 N.C. AM 10 24 SDA N.C. 11 23 SCL 12 13 14 15 16 17 18 19 20 21 22 SMUTE OUT RF CDLOUT du QUAL 31 N.C. 3 MUXL OUT LF CDGND MUXR N.C. 32 N.C. 33 2 MPOUT 1 MPIN CDR CDROUT LEVEL s b O 43 N.C. o r P e o s b O - 44 (s) ct t e l o e t le Pin connections (top view) MPX Figure 2. ) s t( PINCON-TDA7407 7/46 Block diagram and pin connections Table 1. Pin Description N. Name 1 CDR Type CD right channel input I 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 6 nc 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 13 nc 14 LEVEL 15 MPIN 16 MPOUT 17 nc 18 MUXL Multiplexer output left channel 19 MUXR Multiplexer output right channel 20 nc 21 QUAL 22 SMUTE - ) s t( - FM stereo decoder input Level input stereo decoder Multipath input Multipath output e t le so (s) b O - Stereo decoder quality output ct Soft mute drive 2C u d o clock line Pr od uc I I I O O O O I I 23 SCL I 24 SDA I2C data line 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 t e l o 8/46 Function 2 r P e s b O TDA7407 I/O - - - 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 VS Operating ambient temperature range Tstg Operating storage temperature range Supply Parameter VS Supply voltage IS Supply current SVRR t e l o Symbol 10.5 V -40 to 85 °C -55 to 150 °C Min. Typ. Max. Unit 7.5 9 10 V VS = 9V 30 35 40 mA Audioprocessor (all filters flat) 50 60 dB Stereo decoder + audioprocessor 45 55 dB Ripple rejection @ 1KHz r P e Table 4. Test Condition ) s ( ct u d o P e let o s b O - Unit ro Operating supply voltage Symbol s b O1.1 Value Tamb Table 3. c u d Parameter ) s t( Thermal data Parameter Rth-j pins Thermal resistance junction to pins (max) Value Unit 85 °C/W ESD All pins are protected against ESD according to the MIL883 standard. 9/46 Audio processor part TDA7407 2 Audio processor part 2.1 List of features 2.1.1 Input multiplexer 2.1.2 ● Quasi differential CD and cassette stereo input ● AM mono input ● Phone differential input ● Multiplexer signal after In-Gain available at separate pins 2.1.3 Volume control ● 1dB attenuator ● Max. gain 15dB ● Max. attenuation 79dB 2.1.4 ● 2nd order frequency response ● Q-factor programmable in 4 steps ● Center frequency programmable in 4(5) steps ● DC gain programmable ● ±15 x 1dB steps Mid control 2.1.5 2nd order frequency response ● Q-factor programmable in 2 steps ● Center frequency programmable in 4 steps ● ±15 x 1dB steps u d o r P e Treble control t e l o ● ● s b O 10/46 ) s ( ct e t le o s b O - ● ● 2.1.6 c u d Bass control 2nd order frequency response Center frequency programmable in 4 steps ±15 x 1dB steps Speaker control ● 4 independent speaker controls in 1dB steps ● max gain 15dB ● max. attenuation 79dB o r P ) s t( TDA7407 2.1.7 Audio processor part 2.2 Mute functions ● Direct mute ● Digitally controlled softmute with 4 programmable mute time. Electrical characteristics . Table 5. Audio processor electrical characteristics (VS = 9V; Tamb = 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise specified) Symbol Parameter Test condition Min. Typ. Max. Unit 70 100 130 KΩ Input selector Rin Input resistance VCL Clipping level 2.2 2.6 SIN Input separation 80 100 GIN MIN Min. input gain -1 0 GIN MAX Max. input gain 13 GSTEP all inputs except phone CMRR eN ) s ( ct Common mode rejection ratio Output noise @ speaker outputs u d o 17 dB dB -5 0.5 5 mV -10 5 10 mV 70 100 130 KΩ Common mode 70 100 130 KΩ VCM = 1VRMS @ 1KHz 45 70 dB VCM = 1VRMS @ 10KHz 45 60 dB P e let GMIN to GMAX Input resistance dB 1.5 o s b O Differential Rin 1 1 0.5 DC steps Differential CD stereo input dB c u d 15 ) s t( ro Step resolution Adjacent gain step VDC VRMS 20Hz to 20KHz flat; all stages 0dB 6 15 mV Differential phone input r P e Rin t e l o CMRR O bs Input resistance Differential 40 56 KΩ Common mode rejection ratio VCM = 1VRMS @ 1KHz 40 70 dB VCM = 1VRMS @ 10KHz 40 60 dB Volume control GMAX Max gain 13 15 AMAX Max attenuation 70 79 ASTEP Step resolution 0.5 1 1.5 dB G = -20 to 20dB -1.25 0 1.25 dB G = -60 to 20dB -4 0 3 dB 2 dB EA Attenuation set error ET Tracking error 17 dB dB 11/46 Audio processor part Table 5. TDA7407 Audio processor electrical characteristics (continued) (VS = 9V; Tamb = 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise specified) Symbol VDC Parameter Test condition Min. Typ. Max. Unit Adjacent attenuation steps 0.1 3 mV From 0dB to GMIN 0.5 5 mV DC steps Soft mute/AFS AMUTE TD Mute attenuation 80 100 dB T1 0.48 ms T2 0.96 ms T3 40.4 ms T4 324 ms Delay time VTH low Low threshold for SM-/AFS- Pin(1) 1 VTH high High threshold for SM-/AFS-Pin RPD 2.5 45 d o r Bass control CRANGE Control range ASTEP ±15 ±17 dB 0.5 1 1.5 dB 54 60 66 Hz 63 70 77 Hz 72 80 88 Hz fC4 90 100 (150) 110 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 DC = off -1 0 1 dB DC = on 3.5 4.4 5.5 dB ±13 ±15 ±17 dB 0.5 1 1.5 dB fC1 450 500 550 Hz fC2 0.9 1 1.1 kHz fC3 1.35 1.5 1.65 kHz fC4 1.8 2 2.2 kHz P e let Step resolution so fC2 QBASS Center frequency du Quality factor o r P e ) s ( ct t e l o DCGAIN Bass-DC-gain s b O b O fC3 (2) MID control CRANGE Control range ASTEP fC 12/46 KΩ ±13 fC1 fC ) s t( V uc Internal pull-up resistor V Step resolution Center frequency TDA7407 Audio processor part Table 5. Audio processor electrical characteristics (continued) (VS = 9V; Tamb = 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise specified) Symbol QMID Parameter Quality factor Test condition Min. Typ. Max. Unit Q1 0.9 1 1.1 Q2 1.8 2 2.2 ±13 ±15 ±17 dB 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 Treble control CRANGE Control range ASTEP fC Step resolution Center frequency 1. The SM pin is active low (mute = 0) 2. See note in programming section c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 13/46 Stereo decoder part 3 TDA7407 Stereo decoder part Table 6. Stereo decoder electrical characteristics (VS = 9V; de-emphasis time constant = 50μs,VMPX = 500mV (75KHz deviation), fm= 1KHz, Gv = 6dB. Tamb = 25°C; unless otherwise specified) Symbol Parameter Vin MPX input level Rin Input resistance GMIN Test condition Gv = 3.5dB Unit 1.25 VRMS 70 100 130 KΩ Min. input gain 1.5 3.5 4.5 dB GMAX Max. input gain 8.5 11 12.5 dB GSTEP Step resolution 1.75 2.5 3.25 dB 35 60 30 50 Supply voltage ripple rejection α Max. channel separation THD Total harmonic distortion S+N -------------N Signal plus noise to noise ratio Vripple = 100mV; f = 1KHz 0.02 A-weighted, S = 2VRMS Mono / stereo switch e t le dB ) s t( dB 0.3 c u d % 80 91 10 15 25 mV o r P dB VPTHST1 Pilot threshold voltage for Stereo, PTH = 1 VPTHST0 Pilot threshold voltage for Stereo, PTH = 0 15 25 35 mV for Mono, PTH = 1 7 12 17 mV for Mono, PTH = 1 10 19 25 mV VPTHMO1 Pilot threshold voltage VPTHMO0 Pilot threshold voltage PLL Δf/f Capture range c u d De-emphasis and highcut (t s) so b O - 0.5 % tHC50 De-emphasis time constant Bit 7, Subadr, 10 = 0, VLEVEL >> VHCH 25 50 75 μs tHC75 De-emphasis time constant Bit 7, Subadr, 10 = 1, VLEVEL >> VHCH 50 75 100 μs tHC50 Highcut time constant Bit 7, Subadr, 10 = 0, VLEVEL >> VHCL 100 150 200 μs tHC75 Highcut time constant Bit 7, Subadr, 10 = 1, VLEVEL >> VHCL 150 225 300 μs 4.7 5 5.3 V o r P e t e l o 14/46 Typ. Max. 0.5 SVRR s b O Min. Stereo blend and highcut control REF5V Internal reference voltage TCREF5V Temperature coefficient 3300 ppm LGmin Min. LEVEL gain -1 0 1 dB LGmax Max. LEVEL gain 8 10 12 dB TDA7407 Stereo decoder part Table 6. Stereo decoder electrical characteristics (continued) (VS = 9V; de-emphasis time constant = 50μs,VMPX = 500mV (75KHz deviation), fm= 1KHz, Gv = 6dB. Tamb = 25°C; unless otherwise specified) Symbol Parameter Test condition Typ. Max. Unit 0.3 0.67 1 dB VSBLmin Min. voltage for mono 25 29 33 %REF5V VSBLmax Min. voltage for mono 54 58 62 %REF5V VSBLstep Step resolution 2.2 4.2 6.2 %REF5V VHCHmin Min. voltage for NO highcut 38 42 46 %REF5V VHCHmax Min. voltage for NO highcut 62 66 70 %REF5V VHCHstep Step resolution 5 8.4 12 %REF5V VHCLmin Min. voltage for full highcut 12 17 22 %VHCH VHCLmax Max. voltage for full highcut 28 33 38 %VHCH VHCLstep Step resolution 2.2 4.2 6.2 40 50 LGstep LEVEL gain step resolution Min. Carrier and harmonic suppression at the output α19 Pilot signal f = 19KHz α38 Subcarrier f = 38KHz α57 Subcarrier f = 57KHz α76 Subcarrier f = 76KHz ro c u d ) s t( %VHCH dB 75 dB 62 dB 90 dB 65 dB 75 dB Signal f = 57KHz 70 dB u d o 75 dB α114 Signal f = 114KHz 95 dB α190 Signal f = 190KHz 84 dB Intermodulation (Note 1) α2 fmod = 10KHz, fspur = 1KHz α3 fmod = 13KHz, fspur = 1KHz ) s ( ct Traffic Ratio (Note 2) α57 P e let o s b O - SCA - Subsidiary communications authorization (note 3) α67 Signal f = 67KHz r P e ACI - Adjacent channel interference (note 4) t e l o s b O 15/46 Stereo decoder part 3.1 TDA7407 Notes to the characteristics: 1. Intermodulation suppression: V O ( signal ) ( at1kHz ) α2 = ------------------------------------------------------- ; f = (2 x 10kHz) - 19kHz V O ( spurious ) ( at1kHz ) s V O ( signal ) ( at1kHz ) α3 = ------------------------------------------------------- ; f = (3 x 13kHz) - 38kHz V O ( spurious ) ( at1kHz ) s measured with: 91% pilot signal; fm = 10kHz or 13kHz. 2. Traffic radio (V.F.) suppression: measured with: 91% stereo signal; 9% pilot signal; fm = 1kHz; 5% subcarrier (f = 57kHz, fm = 23Hz AM, m = 60%) V O ( signal ) ( at1kHz ) α57 ( V.W > F. ) = --------------------------------------------------------------------------V O ( spurious ) ( at1kHz ± 23kHz ) 3. SCA (Subsidiary Communications Authorization) measured with: 81% mono signal; 9% pilot signal; fm = 1kHz; 10% SCA - subcarrier (fs = 67kHz, unmodulated). c u d V O ( signal ) ( at1kHz ) α67 = ------------------------------------------------------- ; Fs =(2 x 38kHz) - 67kHz V O ( spurious ) ( at9kHz ) 4. ACI (Adjacent Channel Interference): ) s t( o r P V O ( signal ) ( at1kHz ) α114 = ------------------------------------------------------- ; Fs = 110kHz - (3 x 38kHz) V O ( spurious ) ( at4kHz ) e t le o s b O - V O ( signal ) ( at1kHz ) α114 = ------------------------------------------------------- ; Fs = 186kHz - (5 x 38kHz) V O ( spurious ) ( at4kHz ) measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal (fs = 110kHz or 186kHz, unmodulated). ) s ( ct u d o r P e t e l o s b O 16/46 TDA7407 4 Noise blanker part Noise blanker part ● internal 2nd order 140kHz high pass filter ● programmable trigger threshold ● trigger threshold dependent on high frequency noise with programmable gain ● additional circuits for deviation and fieldstrength dependent trigger adjustment ● very low offset current during hold time due to opamps wMOS inputs ● four selectable pulse suppression times ● programmable noise rectifier charge/discharge current Table 7. Noise blanker electrical characteristics Symbol VTR Parameter Test condition Trigger threshold (1) (2) meas. with VPEAK = 0.9V Min. Typ. Max. Unit NBT = 111 (10) 30 (10) mVOP NBT = 110 (10) 35 (10) mVOP NBT = 101 (10) 40 (10) mVOP NBT = 100 (10) 45 (10) mVOP NBT = 011 (10) od 50 (10) mVOP 55 (10) mVOP (10) 60 (10) mVOP (10) 65 (10) mVOP 260 (10) mVOP mVOP NBT = 010 NBT = 001 e t le NBT = 000 VTRNOISE VRECT Noise controlled trigger threshold (3) u d o r P e t e l o VRECT DEV s b O Deviation dependent rectifier voltage (4) Fieldstrength VRECT FS controlled rectifier voltage (5) NCT = 00 (10) NCT = 01 (10) 220 (10) NCT = 10 (10) 180 (10) mVOP NCT = 11 (10) 140 (10) mVOP (7) 0.5 0.9 1.3 V VMPX = 50mV; f = 150KHz 1.5 1.7 2.1 V VMPX = 200mV; f = 150KHz 2.2 2.5 2.9 V OVD = 11 0.5 0.9(off) 1.3 VOP OVD = 10 0.9 1.2 1.5 VOP OVD = 01 1.7 2.0 2.3 VOP OVD = 00 2.5 2.8 3.1 VOP FSC = 11 0.5 0.9(off) 1.3 V FSC = 10 0.9 1.4 1.5 V FSC = 01 1.7 1.9 2.3 V FSC = 00 2.1 2.4 3.1 V b O - meas. with VPEAK = 1.5V (s) ct Rectifier voltage so Pr (10) uc ) s t( VMPX = 0mV means. with VMPX = 800mV (75KHz dev.) means. with VMPX = 0mV VLEVEL