TDA7407 STMicroelectronics, TDA7407 Datasheet
TDA7407
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TDA7407 Summary of contents
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... Softmute function ● Programmable roll-off compensation ● No external components 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 bus and overall cost optimisation for the system designer. ...
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... Input multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Volume control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Bass control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Mid control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Treble control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Speaker control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Mute functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Input multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Input stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 AutoZero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 AutoZero remain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Multiplexer output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Softmute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 BASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Attenuation (80Hz Center frequency (60, 70, 80, 100Hz Quality factors (1, 1.25, 1. mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 MID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Attenuation (1kHz TDA7407 ...
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... TDA7407 5.1.14 5.1.15 5.1.16 5.1.17 5.1.18 5.1.19 5.1.20 5.2 Functional description of the stereo decoder . . . . . . . . . . . . . . . . . . . . . . 26 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 5.2.8 5.2.9 5.2.10 5.2.11 5.2.12 5.3 Automatic threshold control mechanism . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.3.1 5.3.2 5.4 Functional description of the multipath detector . . . . . . . . . . . . . . . . . . . . 31 5.4.1 5.4.2 5 ...
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... Contents 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4/46 TDA7407 ...
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... TDA7407 List of tables Table 1. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 3. Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 4. Thermal data Table 5. Audio processor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 6. Stereo decoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 7. Noise blanker electrical characteristics Table 8. Multipath electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 9. Quality detector Table 10. Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Table 11. ...
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... Signals during stereo decoder's softmute 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 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 ...
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... Block diagram and pin connections Figure 1. Block diagram Figure 2. Pin connections (top view CDR 1 CDROUT 2 CDGND 3 CDLOUT 4 CDL 5 N.C. 6 PHONE- 7 PHONE+ 8 AFS N. Block diagram and pin connections N.C. 33 OUT LF 32 OUT RF 31 OUT LR 30 OUT GND 26 N.C. 25 SDA 24 SCL 23 PINCON-TDA7407 7/46 ...
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... Multiplexer output right channel Stereo decoder quality output Soft mute drive clock line data line Supply ground Supply voltage Right rear speaker output Left rear speaker output Right front spaeaker output Left front speaker output Pre-speaker AC output left channel TDA7407 Type ...
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... TDA7407 Table 1. Pin Description (continued) N. Name ACINLR 38 ACINRR 39 ACINRF 40 ACINLF 41 VREF 42 CREF 43 TAPEL 44 TAPER Pin type legend Input ; O = Output; I/O = Input/Output Supply not connected Table 2. Absolute maximum ratings Symbol V Operating supply voltage S T Operating ambient temperature range amb T Operating storage temperature range stg Table 3 ...
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... Center frequency programmable in 4 steps ● ±15 x 1dB steps 2.1.5 Treble control nd ● 2 order frequency response ● Center frequency programmable in 4 steps ● ±15 x 1dB steps 2.1.6 Speaker control ● 4 independent speaker controls in 1dB steps ● max gain 15dB ● max. attenuation 79dB 10/46 TDA7407 ...
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... TDA7407 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 ( specified) Symbol Input selector R Input resistance in V Clipping level CL S Input separation IN G Min. input gain IN MIN G Max ...
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... STEP f Center frequency C 12/46 = 25° 10KΩ; all gains = 0dB 1KHz; unless otherwise amb L Parameter Test condition Adjacent attenuation steps From 0dB to GMIN ( off TDA7407 Min. Typ. Max. Unit 0 0 100 dB 0.48 ms 0.96 ms 40.4 ms 324 2 KΩ ±13 ±15 ±17 dB 0 ...
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... TDA7407 Table 5. Audio processor electrical characteristics (continued 9V specified) Symbol Q Quality factor MID Treble control C Control range RANGE A Step resolution STEP f Center frequency C 1. The SM pin is active low (mute = 0) 2. See note in programming section = 25° 10KΩ; all gains = 0dB 1KHz; unless otherwise ...
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... Mono, PTH = 1 Bit 7, Subadr >> V LEVEL HCH Bit 7, Subadr >> V LEVEL HCH Bit 7, Subadr >> V LEVEL HCL Bit 7, Subadr >> V LEVEL HCL TDA7407 = 500mV (75KHz deviation), MPX Min. Typ. Max. Unit 0.5 1.25 V RMS 70 100 130 KΩ 1.5 3.5 4.5 dB 8 ...
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... TDA7407 Table 6. Stereo decoder electrical characteristics (continued 9V; de-emphasis time constant = 50μs,V S fm= 1KHz 6dB. T Symbol L LEVEL gain step resolution Gstep VSBL Min. voltage for mono min VSBL Min. voltage for mono max VSBL Step resolution step VHCH Min. voltage for NO highcut ...
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... O spurious signal α57 V.W > --------------------------------------------------------------------------- - spurious at1kHz ( ) O signal α67 = ------------------------------------------------------- - ; at9kHz ( ) O spurious at1kHz ( ) O signal α114 = ------------------------------------------------------- - ; at4kHz ( ) O spurious at1kHz ( ) O signal α114 = ------------------------------------------------------- - ; at4kHz ( ) O spurious = (2 x 10kHz) - 19kHz = (3 x 13kHz) - 38kHz ) at1kHz ( ) ) at1kHz 23kHz ( ± ) =(2 x 38kHz) - 67kHz s = 110kHz - (3 x 38kHz) = 186kHz - (5 x 38kHz) TDA7407 ...
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... TDA7407 4 Noise blanker part nd ● internal 2 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 ● ...
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... NRD = 10 1.3 (5) (10) (10) NRD = 11 2.0 (8) (10) (10) PCH = 0 10 (8) (10) (10) PCH = 1 20 (9) (10) (10) MPNB = 00 0.3 (9) (10) (10) MPNB = 01 0.5 (9) (10) (10) MPNB = 10 0.7 (9) (10) (10) MPNB = 11 0.9 Time T F TDA7407 Unit μs μs μs μs V/ms V/ms V/ms V/ms mV/μs mV/μs V/ms V/ms V/ms V/ms ...
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... TDA7407 Figure 4. Trigger threshold vs.V Figure 5. Deviation controlled trigger adjustment V PEAK ( 2.8 2.0 1.2 0.9 D97AU649 Figure 6. Fieldstrength controlled trigger adjustment V PEAK »3V PEAK VTH MIN. TRIG. THRESHOLD 65mV 8 STEPS 30mV 0.9V D97AU648 20 32.5 45 MONO STEREO NOISE ATC_SB OFF (11) noisy signal ...
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... configuration byte = bits configuration byte = bit D configuration byte = 0 5 bit D configuration byte = 1 5 Test Condition 00 01 Addr Bit 5 Addr Bit 1 TDA7407 Min. Typ. Max. Unit 19 KHz 7 off dB μA 0.5 μA 1.0 0.5 1 1.5 mA Min. Typ. Max. Unit ...
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... AutoZero action because no new source is selected and an undesired mute would appear at the outputs. For such applications the TDA7407 could be switched in the "Auto Zero Remain mode" (Bit 6 of the subaddress byte). If this bit is set to high, the DATABYTE 0 could be loaded without invoking the AutoZero and the old adjustment value remains ...
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... CD+ 1 100K + - 15K 15K CD- 1 100K 27K 28K + - 27K 28K 100K AM 100K STEREO DECODER MPX 100K 1 EXT. MUTE +SIGNAL REF -SIGNAL BUS OUT 2 C bus output register is set to 1 from the start of muting 2 CD OUT IN GAIN D98AU854A Time D97AU634 TDA7407 C bus ...
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... TDA7407 5.1.8 Attenuation (80Hz) Figure 9 shows the attenuation as a function of frequency at a center frequency of 80Hz. 5.1.9 Center frequency (60, 70, 80, 100Hz) Figure 10 shows the four possible center frequencies 60,70,80 and 100Hz. 5.1.10 Quality factors (1, 1.25, 1.5, 2) Figure 11 shows the four possible quality factors 1, 1.25, 1.5 and 2. ...
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... Note: In general the center frequency, Q and DC-mode can be set independently. The exception from this rule is the mode (5/xx1111xx) 10.0K where the center frequency is set to 150Hz instead of 100Hz. 100.0 1.0K = 14dB 80Hz 10.0 100.0 1.0K 10.0K TDA7407 10.0K ...
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... TDA7407 Figure 13. Mid control @ fc=1kHz, Q=1 15.0 10.0 5.0 0.0 -5.0 -10.0 -15.0 10.0 100.0 1.0K Figure 15. Mid Q factor @ fc=1kHz, Gain=14dB 15.0 12.5 10.0 7.5 5.0 2.5 0.0 10.0 100.0 1.0K Figure 17. Treble center frequencies@ Gain = 14dB Figure 14. Mid center frequency @ Gain=14dB ...
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... Stereo decoder Mute The TDA7407 has a fast and easy to control RDS mute function which is a combination of the audioprocessor's softmute and the high ohmic mute of the stereo decoder. If the stereo decoder is selected and a softmute command is sent (or activated through the SM pin), the stereo decoder will be set automatically to the high ohmic mute condition after the audio signal has been softmuted ...
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... TDA7407 offers an I compensate the lowpass behaviour of the tuner section. If the tuner attenuation at 38kHz range from 4.2% to 31.0% the TDA7407 needs no external network in front of the MPX pin. Within this range an adjustment to obtain at least 40dB channel separation is possible. The bits for this adjustment are located together with the fieldstrength adjustment in one byte ...
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... The included detector enables the demodulation if the pilot tone reaches the selected pilot tone threshold V detector output (signal STEREO, see block diagram) can be checked by reading the status byte of the TDA7407 via I 5.2.6 Field strength control The fieldstrength input is used to control the high cut and the stereoblend function. In addition the signal can be also used to control the noiseblanker thresholds and as input for the multipath detector ...
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... Therefore they have a temperature coefficient near zero. This is useful if the fieldstrength signal is also temperature compensated. But most IF devices apply a LEVEL voltage with 3300ppm. The TDA7407 offers this TC for the reference voltages, too. The TC is selectable with bit D7 of the "stereo decoder adjustment" ...
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... If the MPX signal is noisy the PEAK voltage increases due to the higher noise, which is also rectified. With increasing of the PEAK voltage the trigger threshold increases, too. This particular gain is programmable in 4 steps. 30/46 Figure RECTIFIER RECT + - VTH + PEAK LOWPASS + CONTROL D98AU856 23). TDA7407 23. MONOFLOP HOLDN THRESHOLD GENERATOR ADDITIONAL THRESHOLD CONTROL ...
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... TDA7407 5.3 Automatic threshold control mechanism 5.3.1 Automatic threshold control by the stereoblend voltage Besides the noise controlled threshold adjustment there is an additional possibility for influencing the trigger threshold depending on the stereoblend control. The point where the MPX signal starts to become noisy is fixed by the RF part. Therefore also the starting point of the normal noise-controlled trigger adjustment is fixed ...
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... Quality detector The TDA7407 offers a quality detector output which gives a voltage representing the FM reception conditions. To calculate this voltage the MPX noise and the multipath detector output are summed according to the following formula: The noise signal is the PEAK signal without additional influences. The factor " ...
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... TDA7407 Figure 25. Mute control logic Multipath detector 33/46 ...
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... Auto increment If bit I in the subaddress byte is set to "1", the autoincrement of the subaddress is enabled. Table 11. Transmitted data (send mode) MSB Soft mute activated ST = Stereo X = Not Used 34/46 Subaddress MSB LSB ACK TDA7407 Data 1 to data n MSB LSB DATA ACK P LSB ...
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... TDA7407 Table 12. Subaddress (receive mode) MSB LSB I2C Bus interface description Function AutoZero Remain off on Testmode off on Auto Increment Mode off on Input Multiplexer Volume Treble Bass Speaker attenuator LF Speaker attenuator RF Speaker attenuator LR Speaker attenuator RR Soft Mute / Bass Prog. Stereo Decoder Noiseblanker High Cut Control Fieldstrength & ...
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... Volume and speaker attenuation (subaddress 1H, 4H, 5H, 6H, 7H) MSB 36/46 LSB LSB TDA7407 Function Source selector CD Cassette Phone AM Stereo Decoder AC Inputs Front Mute AC inputs Rear In-Gain 15dB 14dB : Coupl. front speaker external internal Function not used configurations +15dB : +1dB 0dB 0dB -1dB : -15dB -16dB : -78dB -79dB Mute ...
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... TDA7407 Table 15. Treble filter (subaddress 2H) MSB Table 16. Bass filter (subaddress 3H) MSB LSB LSB Data byte specification Function Treble steps -15dB -14dB : -1dB 0dB 0dB +1dB : +14dB +15dB Treble center frequency 10.0KHz 12.5KHz 15.0KHz 17.5KHz Coupl. rear speaker external (AC) internal Function Bass Steps ...
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... TDA7407 Function Mute Enable Soft Mute Disable Soft Mute Mutetime = 0.48ms Mutetime = 0.96ms Mutetime = 40.4ms Mutetime = 324ms Stereo decoder Soft Mute Influence = on Stereo decoder Soft Mute Influence = off Bass center frequency Center Frequency = 60 Hz Center Frequency = 70 Hz Center Frequency = 80 Hz Center Frequency = 100Hz ...
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... TDA7407 Table 19. Noiseblanker (subaddress AH) MSB Table 20. High Cut (subaddress BH) MSB LSB LSB Data byte specification Function Low Threshold 65mV Low Threshold 60mV Low Threshold 55mV Low Threshold 50mV Low Threshold 45mV Low Threshold 40mV Low Threshold 35mV Low Threshold 30mV Noise Controlled Threshold 320mV ...
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... TDA7407 Function VSBL at 29% REF 5V VSBL at 33% REF 5V VSBL at 38% REF 5V VSBL at 42% REF 5V VSBL at 46% REF 5V VSBL at 50% REF 5V VSBL at 54% REF 5V VSBL at 58% REF 5V Noiseblanker Field strength Adj 2.3V Noiseblanker Field strength Adj 1.8V Noiseblanker Field strength Adj 1.3V Noiseblanker Field strength Adj OFF Quality Detector Coefficient ...
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... TDA7407 Table 23. Stereo decoder adjustment (subaddress EH) MSB Table 24. Testing (subaddress FH) MSB LSB LSB Data byte specification Function Roll Off Compensation not allowed 7.2% 9.4% : 13.7% : 20.2% not allowed 19.6% 21.5% : 25.3% : 31.0% Level Gain 0dB 0.66dB 1.33dB : 10dB Function Stereo decoder test signals ...
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... LSB TDA7407 Function Testsignals at CASS_R VHCCH Level intern Pilot magnitude VCOCON; VCO Control Voltage Pilot threshold HOLDN NB threshold F228 VHCCL VSBL not used not used PEAK not used REF5V not used VCO OFF ON Audioprocessor test mode enabled if bit D5 of the subaddress(test mode bit) is set to " ...
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... TDA7407 Table 25. New quality / control (subaddress 10H) (continued) MSB Table 26. Mid filter (subaddress 11H) MSB LSB 0 1 LSB Data byte specification Function Auto Zero Off On Smoothing Filter On Off Enable AF Pin Enable Pin Disable Pin AF Pin ST Decoder Mute Influence On Off Function Attenuation ...
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... TDA7407 OUTLINE AND MECHANICAL DATA LQFP44 ( 1.4mm) 0076922 E ...
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... TDA7407 9 Revision history Table 27. Document revision history Date 04-Oct-2004 01-Apr-2005 22-Jan-06 Revision 1 Initial release. 2 Style sheet changed to comply with corporate guidelines. 3 Package change, layout changes, text modifications. Revision history Changes 45/46 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 46/46 Please Read Carefully: © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TDA7407 ...