TDA7540B STMicroelectronics, TDA7540B Datasheet
TDA7540B
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TDA7540B Summary of contents
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CD00108485 Rev 1.0 AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS) Version Release Date Rev 1.0 Initial Edocs version ACTIVE Datasheet DOCUMENT HISTORY Change Qualifier PAGE A Initial Release ...
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CD00108485 Rev 1.0 ACTIVE DOCUMENT APPROVAL Name Brasca, Guido Bosisio, Savino Function Market Com Corporate Com PAGE B Date 11−May−2006 11−May−2006 ...
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CD00108485 Rev 1.0 Document Id Document Type ACTIVE REFERENCED DOCUMENTS Document Title No References PAGE C Relation Name ...
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... CD00108485 Rev 1.0 ACTIVE CUSTOM ATTRIBUTES Alternate Identifier(s) Alternate Name Confidentiality Level ECN Number Original ID Original Repository Revalidation Date Status Publishing scope Root Part Number(s) 12326 Public ACTIVE Public TDA7540B PAGE D ...
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... PLL synthesizer with IF counter on a single chip. Use of BICMOS technology allows the implementation of several tuning functions and a minimum of external components. Temp range, °C Package - TQFP80 Rev 1 COMPANY INTERNAL DATE 11-May-2006 TDA7540B TQFP80 2 C-Bus controlled Packing Tube 1/75 www.st.com Unauthorized reproduction and communication strictly prohibited page: 1/75 75 ...
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... Soft mute control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Functional description of the noise blanker . . . . . . . . . . . . . . . . . . . . . . 29 Functional description of the multipath-detector . . . . . . . . . . . . . . . . . . 30 Quality detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 AFS control and stereo decoder mute . . . . . . . . . . . . . . . . . . . . . . . . . . 31 PLL frequency synthesizer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 IF counter block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 COMPANY INTERNAL DATE 11-May-2006 page: 2/75 TDA7540B Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 4.5.8 5 Software specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.1 Address organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.2 Control register function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5.2.1 6 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 7 Part List (Application and measurment circuit Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 9 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 10 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 ...
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... DOCUMENT CD00108485 REVISION 1.0 Block diagram 1 Block diagram Figure 1. Block circuit diagram 4/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 4/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 2 Pins description and connection diagrams 2.1 TQFP80 pins connection diagram Figure 2. 2.2 Pin description Table 1. Pin No AMRFAGCOUT Copyright STMicroelectronics ACTIVE Pins description and connection diagrams TQFP80 pins connection (top view MIX1 OUT1 2 TEST1 3 DEVTC 4 AMMIX1IN 5 AMMIX1REF ...
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... Stereodecoder Output Left VCC1 Digital Supply FSWO Weighted Fieldstrength Output with programmable DC offset Qualyout Stereodecoder Quality Output Strereodecoder Ground MPTC Multipath Time Constant MUTETC Weak Signal Mute Time Constant COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Unauthorized reproduction and communication strictly prohibited page: 6/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 1. Pin No FMREFDEMC AMMIX2OUT2 63 AMMIX2OUT1 AMREFDEMC 2.3 Thermal data Table 2. Symbol R Thermal Resistance Junction to ambient th(j-amb) Copyright STMicroelectronics ACTIVE Pins description and connection diagrams Pin description (continued) Pin Name MPXIN Stereodecoder Input VCCSTEREO Stereodecoder Supply AFS ...
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... I Supply current CCMIX1 8/75 Copyright STMicroelectronics ACTIVE Parameter = CC1 CC2 CC3 CCST CCVCO Parameter Test conditions VCO COMPANY INTERNAL DATE 11-May-2006 TDA7540B Value Unit 9 °C -55 to 150 °C ±1500 V ±150 V ±750 =8.5V, CCMIX1 CCMIX2 CCIF1 Min. Typ. Max. Unit 7 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 4. Electrical characteristics (continued 25°C, V amb f = 10.25MHz, in application circuit, unless otherwise specified). Xtal Item Symbol 1.16 I Supply current CCMIX1 1.17 I Supply current CCMIX2 1.18 I Supply current CCIF1 1.19 I Supply current CCST 2 Reference Voltages 2.1 V Internal reference voltage REF1 2 ...
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... PH ratio wanted/image with phase adjust IFG1 IFG1 referred to 330Ω input ref. to 330Ω input, 9dB gain COMPANY INTERNAL DATE 11-May-2006 TDA7540B = CCMIX1 CCMIX2 CCIF1 Min. Typ. Max. 2.5 V REF1 + ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 5. Electrical characteristics (continued 25°C, V amb f = 98MHz, dev= 40kHz otherwise specified). Item Symbol 10.3 V Limiting sensitivity 65 10.4 G Mixer gain 11 Limiter 1 (450kHz) 11.1 G Gain Limiter 12 Demodulator, Audio Output 12.1 THD 12.2 V MPX output signal MPX 12.3 R Output impedance OUT 12 ...
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... Test Conditions MPG=0 MPG=1 MPF=0 MPF 450kHz REF_intern ISS80 = 1 ISS80 = 1 ISS80 = 0 ISS80 = 0 ISS30 = 1 ISS30 = 1 ACNTH ACNTH ACWTH ACWTH MPTH MPTH TISS, ISSCTL = 1 TISS, ISSCTL = 1 COMPANY INTERNAL DATE 11-May-2006 TDA7540B = 8.5V, CCMIX1 CCMIX2 CCIF1 Min. Typ. Max. Unit 4 kΩ kHz 31 kHz ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 5. Electrical characteristics (continued 25°C, V amb f = 98MHz, dev= 40kHz otherwise specified). Item Symbol Charge current high 14. narrow 14. Discharge current low 27 28 14. Discharge current high 27 28 14. Low voltage 27 28 14. High voltage 27 28 ISS Filter Switch Threshold 14.22 ...
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... INRF 120 dBµ 0.8 INRF 60dBµV INRF V = 60dBµ, m=off INRF WAGC WAGC DAGC seek seek/seek off differential differential differential COMPANY INTERNAL DATE 11-May-2006 TDA7540B = 8.5V, CCMIX1 CCMIX2 CCIF1 Min. Typ. Max. Unit 25 19 dBµ ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 6. Electrical Characteristics (T = 25°C, V amb f = 98MHz otherwise specified). Item Symbol 20.4 CP 1dB compression point 1dB 20.5 IIP3 3rd order intermodulation 20.6 F Noise figure 20.7 A Gain 20.8 C Min. capacitance step min 20.9 C Max. capacitance max 20 ...
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... Stereo->Mono, PTH = 0 Pilot magnitude rms Pilot frequency 19kHz DEEMP = 0, DESFT = 1 V >> V LEVEL HCH DEEMP = 1, DESFT = 1 V >> V LEVEL HCH COMPANY INTERNAL DATE 11-May-2006 TDA7540B = 8.5V, CCMIX1 CCMIX2 CCIF1 = 10.25MHz, in application Xtal Min. Typ. Max. Unit 0.5 0.93 V 100 kΩ ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 7. Electrical characteristics (continued 25°C, V amb V = 500mV MPX circuit, unless otherwise specified). Item Symbol 26.3 t Deemphasis time constant HC25 26.4 t Deemphasis time constant HC37 26.5 t Highcut time constant HC50 26.6 t Highcut time constant HC75 26.7 F Min. AM corner frequency AMCMin 26 ...
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... NBFS = 11 V =0mV, V MPX LEVEL (fully mono), NBFS = 00 Signal HOLDN in testmode, NBT Signal HOLDN in testmode, NBT Signal PEAK in testmode, NBPC=0 Signal PEAK in testmode, NBPC=1 COMPANY INTERNAL DATE 11-May-2006 TDA7540B = 8.5V, CCMIX1 CCMIX2 CCIF1 = 10.25MHz, in application Xtal Min. Typ. Max. Unit 70 75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 7. Electrical characteristics (continued 25°C, V amb V = 500mV MPX circuit, unless otherwise specified). Item Symbol Noise rectifier discharge 33.17 V RECTADJ adjustment Noise rectifier discharge 33.18 V RECTADJ adjustment Noise rectifier discharge 33.19 V RECTADJ adjustment Noise rectifier discharge 33.20 ...
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... Copyright STMicroelectronics ACTIVE (spurious, @1KHz (2x10KHz) - 19KHz O (spurious, @1KHz (3x13KHz) - 38KHz O (signal,@1KHz (spurious, @1KHz+/-23KHz (spurious, @9KHz (2x38KHz) - 67KHz O (spurious, @4KHz 110KHz - (3x38KHz) O (spurious, @4KHz 186KHz - (5x38KHz) O COMPANY INTERNAL DATE 11-May-2006 page: 20/75 TDA7540B = Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Figure 3. 8 STEPS Figure 4. Figure 5. Copyright STMicroelectronics ACTIVE Trigger threshold vs. V PEAK VTH Min. Trig. T hreshold 200 mV 147 mV 0.8 V Deviation controlled trigger adjustmen V PEAK [ 2.0 1.5 1.0 0.8 20 32.5 45 Field strength controlled trigger adjustment V PEAK MONO STEREO ≈ ...
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... OUT I = 0.2mA OUT OUT CC3 OUT CC3 = 200MHz, ∆f=1KHz, f VCO B=1Hz, closed loop µ -200 0.5V- -5mA COMPANY INTERNAL DATE 11-May-2006 TDA7540B = 8.5V, CCMIX1 CCMIX2 CCIF1 Min. Typ. Max. 0.5 V -0.5 CC3 40 20 10.25 0.75 23.25 1.5 0.2 = Tristate -0.1 0.1 -0 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 8. Electrical characteristics (continued 25°C, V amb f = 98MHz, dev. = 40kHz otherwise specified). Item Symbol 41.2 V Output voltage high 41.3 -I Output leakage current 41.4 I Output current, sink 42 Switching Outputs S1, S2 (Open Emitter SMODE=0) 42.1 V Output voltage low 42.2 ...
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... This voltage is compared with adjustable comparator1 thresholds (ACWTH, ACNTH). The output signal of this comparator generates a DC level at PIN27 by programmable time constant. Time control (TISS) for a present adjacent channel 24/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 24/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B is made by charge and discharge current after comparator1 in an external capacitance. The charge current is fixed and the discharge current is controlled by I produces digital signals (ac, ac additional comparator4. The adjacent channel information is available as analog output signal after rectifier and +8dB output buffer. ...
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... The 4.th order input filter has a corner frequency of 80kHz and is used to attenuate spikes and noise and acts as an anti-aliasing filter for the following switch capacitor filters. 26/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 26/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Demodulator In the demodulator block the left and the right channel are separated from the MPX-signal. In this stage also the 19-kHz pilot tone is canceled. For reaching a high channel separation the TDA7540 offers an I2C-bus programmable roll-off adjustment, which is able to compensate the low pass behavior of the tuner section ...
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... VSBL. To adjust the voltage where the full channel separation is reached L G has to be defined. The following equation can be used to estimate /FSU@full stereo REF1 COMPANY INTERNAL DATE 11-May-2006 TDA7540B whereas the range can be set VREF1 Unauthorized reproduction and communication strictly prohibited page: 28/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Figure 7. 4.3.2 Functional description of the noise blanker In the automotive environment spikes produced by the ignition or for example the wiper- motor disturb the MPX-signal. The aim of the noise blanker part is to cancel the audible influence of the spikes. Therefore the output of the stereo decoder is held at the actual voltage for a time between 22 blanker is given in fig ...
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... An external capacitor is used to define the attack- and decay-times (see a. The slew rate is measured with RDischarge=infinite and VMPout=2.5V 30/75 Copyright STMicroelectronics ACTIVE Figure 4) (a) . The second possibility is to COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 30/75 TDA7540B Figure 5) ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B block diagram, fig. 16). The MP_OUT-pin is used as detector-output connected to a capacitor of about 47nF. Using this configuration an external adaptation to the user's requirement is possible without affecting the "normal" fieldstrength input (LEVEL) for the stereo decoder. To keep the old value of the Multipath Detector during an AF-jump, the MP-Hold switch can disconnect the external capacitor ...
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... For auto search stop operation an IF counter system is 2 C-Bus interface.The reference frequency is generated by an REF REF ≤ ≥ 32 and f . This phase error signal drives the charge pump current generator. REF COMPANY INTERNAL DATE 11-May-2006 page: 32/75 TDA7540B 2 C Bus Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Inlock detector Switching the chargepump in low current mode can be done either via software or automatically by the inlock detector, by setting bit LDENA to "1". After reaching a phase difference about lower than 40nsec the chargepump is forced in low current mode. A new PLL divider alternation by I high current mode ...
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... START and will not response to any command if this condition has not been met. 34/75 Copyright STMicroelectronics ACTIVE FM mode conversion mode IF AM mode ERR + t ERR + t ERR - t ERR 2 C-Bus protocol. This protocol defines any device that sends COMPANY INTERNAL DATE 11-May-2006 page: 34/75 TDA7540B Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 4.5.3 Stop condition A STOP condition is defined by a LOW to HIGH transition of the SDA while the SCL line stable HIGH level. This condition terminates the communication between the devices and forces the bus-interface of the device into the initial condition. ...
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... Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 36/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 5 Software specification The interface protocol comprises: – start condition (S) – chip address byte – subaddress byte – sequence of data (N bytes + Acknowledge) – stop condition (P) The pagermode is only working up to byte 31. After byte need to send again the chip address followed by the subaddress 32 and the databytes starting from 39! 5 ...
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... OUT6 OUT5 OUT4 --- TINACM TINMP TINAC OUT18 OUT17 OUT16 TIN2 OUT27 OUT26 OUT25 --- --- MUXST3 MUXST2 MUXST1 MUXST0 PCM --- SBSH COMPANY INTERNAL DATE 11-May-2006 TDA7540B SMD0 SMTH2 SMTH1 SMTH0 ACM0 ACMD1 ACMD0 SMCTH RC0 VCOD2 VCOD1 VCOD0 IFAGC1 IFAGC0 RFAGC1 RFAGC0 WAGC3 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 5.2 Control register function Table 10. Register Name A ACF ACG ACM ACMD ACNTH ACWTH AFSM AFSON AINBD AINBT AINT AMAF AMD AMCF AMIN AMNBD AMNBFO AMNBHP AMON AMSEEK AMST APPM B BWCTL CASF CF CLKSEP CTLOFF CURRH DAGC DEEMP ...
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... Multipath detector bandpass filter gain Multipath filter frequency Multipath filter gain Multipath internal influence enable Multipath control “OFF” Multipath influence on peak discharge current Multipath detector rectifier gain COMPANY INTERNAL DATE 11-May-2006 page: 40/75 TDA7540B Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 10. Register Name MPTH MS MUXST NBCTH NBDTH NBFS NBFT NBLTH NBON NBPC NBRR NBSMP NBT ODCUR ODSW OUT PC PCM PDH PH PTH QDC QNG RC RFAGC RFKAGC ROC S SBA SBC SBSH SBT SBTO SBW SI Copyright STMicroelectronics ACTIVE Control register function (continued) ...
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... Tuning voltage offset for prestage (weather band mode) VCO divider Stereodecoder VCO mode Start level high cut Stop level high cut AM wide band AGC Xtal frequency adjust Xtal amplitude limitation COMPANY INTERNAL DATE 11-May-2006 page: 42/75 TDA7540B Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 11. Subaddress MSB 5.2.1 Data Byte Specification Table 12. Addr 0 Charge Pump Control MSB Table 13. Addr 1 PLL Counter 1 (LSB) MSB Copyright STMicroelectronics ACTIVE LSB Charge pump control - - - - - STD9 - - - - - FMDEMSB Page mode “OFF” Page mode enable LSB ...
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... MSB = 64768 MSB = 65024 MSB = 65280 MSB = 65536 /f = LSB + MSB + 32 VCO SYN LSB Tuning Voltage Offset = TVO = 25mV TVO = 50mV - - - - - TVO = 3175mV -TVO +TVO COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Function Unauthorized reproduction and communication strictly prohibited page: 44/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 16. Addr 5 IF Counter Control 1 MSB Table 17. Addr 6 IF Counter Control 2 MSB Copyright STMicroelectronics ACTIVE LSB 20.48ms (FM)128ms (AM ) Sample 10.24ms (FM)64ms (AM ) Sample 5.12ms (FM)32ms (AM ) Sample 2.56ms (FM)16ms (AM ) Sample 1.28ms (FM)8ms (AM ) Sample 640µs (FM)4ms (AM ) Sample 320µs (FM)2ms (AM) ...
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... Enable local mode (PIN diode current = 0.5mA) LSB ISS filter control “ON” 1 ISS filter control “OFF” 0 Switch ISS filter “OFF” 1 Switch ISS filter “ON” COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Function Unauthorized reproduction and communication strictly prohibited page: 46/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 19. Addr 8 Quality ISS Filter (continued) MSB Table 20. Addr 9 Quality Detection Adjacent Channel MSB Copyright STMicroelectronics ACTIVE LSB Switch “OFF” ISS filter 120kHz 1 Switch “ON” ISS filter 80kHz 0 Switch “OFF” ISS filter 30KHz for weatherband 1 Switch “ ...
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... DEV threshold for ISS filter “OFF” ratio 1.5 DEV threshold for ISS filter “OFF” ratio 1.4 DEV threshold for ISS filter “OFF” ratio 1.3 DEV threshold for ISS filter “OFF” ratio 1 COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function , discharge current 1µA , discharge current 3µ ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 22. Addr 11 Quality Deviation Detection (continued) MSB Table 23. Addr 12 Softmute Control 1 MSB Table 24. Addr 13 Softmute Control 2 MSB Copyright STMicroelectronics ACTIVE LSB Disable ISS filter to fixed bandwith (ISS80) in automatic control Enable ISS filter to fixed bandwith (ISS80) in automatic ...
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... RFAGC threshold IFAGC threshold IFAGC threshold IFAGC threshold IFAGC threshold V COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Function = 85(77 ANT)dBµV 9-11TH = 90(82 ANT)dBµV 9-11TH = 94(86 ANT)dBµV 9-11TH = 96(88 ANT)dBµV 9-11TH = 86(60 ANT)dBµV 77TH = 92(66 ANT)dBµV 77TH = 96(70 ANT)dBµ ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 26. Addr 15 FM AGC (continued) MSB Table 27. Addr 16 AM AGC MSB Copyright STMicroelectronics ACTIVE LSB KAGC threshold 80dB KAGC threshold 82dB KAGC threshold 84dB KAGC threshold 86dB KAGC threshold 88dB KAGC threshold 90dBµV KAGC threshold 92dBµV Keying AGC “ ...
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... Spike cancelation ”OFF” Threshold for spike cancelation 750mV Threshold for spike cancelation 270mV Threshold for spike cancelation 520mV COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Unauthorized reproduction and communication strictly prohibited page: 52/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 29. Addr 18 S-Meter Slider MSB Table 30. Addr 19 IF GAIN/XTAL Adjust MSB Copyright STMicroelectronics ACTIVE LSB meter slider offset SL=0dB meter offset SL=1dB meter offset SL=2dB - - - - - meter offset SL=15dB S meter offset -SL S meter offset +SL S Meter slope 1V/decade S meter slope 1.5V/decade Overdeviation correction current max=45µ ...
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... LSB degree degree degree - - - - - degree degree degree - - - - - +8degree Softmute reference offset OFF Softmute reference offset -50mV Softmute reference offset -100mV Softmute reference offset -150mV COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Unauthorized reproduction and communication strictly prohibited page: 54/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 33. Addr Noise Blanker MSB Table 34. Addr 23 Switch Control MSB Copyright STMicroelectronics ACTIVE LSB AINBT 0mV AINBT 12.5mV AINBT 25mV - - - - - AINBT 187.5mV AINBD “ON” AINBD 4.0V AINBD 3.2V AINBD “OFF” µ AINT 8 s µ ...
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... Noise blanker peak charge current low 1 Noise blanker peak charge current high Pilot threshold high Pilot threshold low Deemphasis 50 Deemphasis 75 Stereodecoder ingain = 3,75dB Stereodecoder ingain = 2,5dB COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function µ s µ s Unauthorized reproduction and communication strictly prohibited page: 56/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 36. Addr 25 Stereodecoder 2 (continued) MSB Table 37. Addr 26 Stereodecoder 3 MSB Table 38. Addr 27 Stereodecoder 4 MSB Copyright STMicroelectronics ACTIVE LSB Stereodecoder ingain = 1,25dB Stereodecoder ingain = 0dB LSB Audio noise blanker low threshold 280mV Audio noise blanker low threshold 261mV ...
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... Quality detector coefficient a=0,6 Quality detector coefficient a=0,75 Quality detector coefficient a=0,9 Quality detector coefficient a=1,05 Multipath influence on peak discharge OFF Multipath influence on peak discharge ON (-1V/ms) COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Unauthorized reproduction and communication strictly prohibited page: 58/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 40. Addr 29 Stereodecoder 6 MSB Table 41. Addr 30 Stereodecoder 7 MSB Copyright STMicroelectronics ACTIVE LSB Noise rectifier discharge resistor = infinite 0 1 Noise rectifier discharge resistor =56K 1 0 Noise rectifier discharge resistor =33K 1 1 Noise rectifier discharge resistor =18K 0 0 Multipath detector band pass gain =6dB ...
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... AM audio noise blanker high pass filter order 1st AM audio noise blanker high pass filter order 2nd AM audio delay for noise blanking “OFF” AM audio delay for noise blanking “ON” COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function th1 th2 Unauthorized reproduction and communication strictly prohibited ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Table 43. Addr 32 Stereodecoder 9 MSB Table 44. Addr 33 Test Tuner Control 1 MSB Table 45. Addr 34 Test Tuner Control 2 MSB Table 46. Addr 35 Test Tuner Control 3 MSB Table 47. Addr 36 Test TUNER Control 4 MSB Table 48. Addr 37 Test TUNER Control 5 MSB Copyright STMicroelectronics ...
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... Stereo decoder VCO ON (mandatory in FM mode) Stereo decoder VCO OFF Pilot cancellation mode: always Pilot cancellation mode: if pilot > threshold Stereo decoder VCO set456 Stereo decoder VCO free running COMPANY INTERNAL DATE 11-May-2006 TDA7540B Function Function Unauthorized reproduction and communication strictly prohibited page: 62/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 6 Appendix Figure 8. Block diagram I/Q mixer Figure 9. Block diagram VCO Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 63/75 Appendix 63/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 Appendix Figure 10. Block diagram keying AGC Figure 11. Block diagram ISS function 64/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 64/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Block Diagram Quality Detection Principle (without overdeviation correction) Table 51. Signal ac No adjacent channel ac+ No strong adjacent channel sm Fieldstrength higher as softmute threshold dev Deviation lower as threshold DWTH dev+ Deviation lower as threshold DTH*DWTH inton ISS filter off by logic (wide) ...
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... DOCUMENT CD00108485 REVISION 1.0 Appendix Figure 12. Block diagram AM part 66/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 66/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Figure 13. Blockdiagram AM IF Noise Blanker Figure 14. Block diagram Stereodecoder Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 67/75 Appendix 67/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 Appendix Figure 15. Block diagram Audio Noise Blanker Figure 16. Block diagram Multipath Detection 68/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 68/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Figure 17. Block diagram AFS function Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 69/75 Appendix 69/75 ...
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... TOKO LL 2012-22.0 muRata SFE10.7MS3A10-A 180KHz or (TOKO CFSK107M3-AE-20X) muRata SFE10.7MJA10-A 150KHz or (TOKO CFSK107M4-AE-20X) muRata SFPS 450H 6KHz or (TOKO ARLFC450T) TOSHIBA 1SV172 TOKO KP2311E TOKO KV1370NT PHILIPS BB156 TOSHIBA HN3G01J COMPANY INTERNAL DATE 11-May-2006 TDA7540B Description Unauthorized reproduction and communication strictly prohibited page: 70/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 8 Application circuit Figure 18. Application circuit Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 71/75 Application circuit 71/75 ...
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... To minimize “AM TWEET” the AM demodulator capacitor should be connected versus GNDVCC1 at PIN 41 and FSU output at PIN 22 should be filtered with capacitor of about 2,2nF versus GNDVCC2. 72/75 Copyright STMicroelectronics ACTIVE COMPANY INTERNAL Unauthorized reproduction and communication strictly prohibited DATE 11-May-2006 page: 72/75 TDA7540B ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B 10 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. ...
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... DOCUMENT CD00108485 REVISION 1.0 Revision history 11 Revision history Table 54. Date 10-May-2006 74/75 Copyright STMicroelectronics ACTIVE Document revision history Revision 1 Initial release. COMPANY INTERNAL DATE 11-May-2006 TDA7540B Changes Unauthorized reproduction and communication strictly prohibited page: 74/75 ...
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... DOCUMENT CD00108485 REVISION 1.0 TDA7540B Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...