TDA7514 STMicroelectronics, TDA7514 Datasheet
TDA7514
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TDA7514 Summary of contents
Page 1
... BLANKER HIGHLY INTEGRATED AUDIO PROCESSOR ■ 2 DESCRIPTION The TDA7514 is a device for car-radio applications that combines full RF front-end functions with ad- vanced audio-processing capabilities. As far as FM and AM functions are concerned, the TDA7514 features front-end processing, including the digital tuning PLL. IF processing with demodu- ...
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... TDA7514 Figure 2. Block Diagram www.DataSheet4U.com 2/74 ...
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... ISS BW indicator multipath det / adjacent channel det output ISS time constant deviation detector time constant 3V reference audio processor/stereo decoderground audio processor/stereo decoder supply (8V) audio out audio out audio out audio out TDA7514 3/74 ...
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... TDA7514 Table 2. Pin Description N° Pin 41 CHIMEIN 42 ACRIN 43 ACROUT 44 ACLIN 45 ACLOUT 46 PH+ 47 PH- 48 PB_L 49 PB_R 50 AUXR www.DataSheet4U.com 51 AUXCOM 52 AUXL 53 TUNERIN 54 TUNEROUT 55 AUDIOMUTE IFCOUT / ARSOUT 57 SDA 58 SCL 59 SMETEROUT 60 DEMGND 61 AMIF2AMPIN 62 SMETERTC 63 FMDEMREF 64 AMIF2AMPREF 65 SNCTC 66 AMAGC2TC 67 AMMIX2OUT- 68 AMMIX2OUT+ 69 FMMIX2IN- 70 FMMIX2IN+ 71 FMIFAMP2OUT 72 FMIFAMP2IN ...
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... SoftMute Off fdev = 40kHz fdev = 75kHz @TUNEROUT Delta Vout@RF OFF, Soft Mute OFF Differential @pin 8, pin 10 without adjustment adjusted from input (single-ended) to IFT1 out differential Between MIX1OUT+ and MIX1OUT- TDA7514 Min Typ Max Unit 0 dBµV load 65 dB -2.5 dBµV load 0. ...
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... TDA7514 Table 3. (continued) Symbol Cift1max IFT1 Adjustment Capacitor Maximum Cift1step IFT1 Adjustment Capacitor Step RFT Adjustment Vrftadjmin RFT Adjustment Minimum Vrftadjmax RFT Adjustment Maximum Vrftadjstep RFT Adjustment Step www.DataSheet4U.com VRFT0 Voutmax Output voltage maximum Voutmin Output voltage minimum Wide Band RF AGC (input: FMMIXER1in+ and FMMIXER1IN-) ...
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... Source and load impedance: 330ohm. Source and load impedance: 330ohm. Source and load impedance: 330ohm. Source impedance: 330ohm. @FMMIX2IN=50dBµV @FMMIX2IN=70dBµV @FMMIX2IN=90dBµV T16<5>= 0 T16<5>= 1 T16<5>= 0 T16<5>= 1 @VFSM=2.6V @VFSM=2.6V TDA7514 Min Typ Max Unit TBD dBµV Ω 330 Ω 330 7 ...
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... TDA7514 Table 3. (continued) Symbol Fc120BW3 Fcenter=120KHz, @-3dB,BW Fc120BW20 Fcenter=120KHz, @-20dB,BW @ISS 120KHz Fc80BW3 Fcenter=80KHz, @-3dB,BW Fc80BW20 Fcenter=80KHz, @-20dB,BW Fc20BW3 Fcenter=20KHz, @-3dB,BW Fc20BW20 Fcenter=20KHz, @-20dB,BW ∆Fmin Fcenter Fine adjust minimum ISS Filter Time Constant www.DataSheet4U.com Ichal1 Charge current low Ichah1 Charge current high ...
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... Cutoff Frequency of MPX LPF nd (2 order) Parameter Test Condition Vsmeter at starting desens Vsmeter at starting desens Vsmeter at starting desens Vsmeter at starting desens T22<6:5>=00 T22<6:5>=01 T22<6:5>=10 T22<6:5>=11 T25<1:0>=00 T25<1:0>=01 T25<1:0>=10 T25<1:0>=11 T25<3:2>=00 T25<3:2>=01 T25<3:2>=10 T25<3:2>=11 TDA7514 Min Typ Max Unit 100 300 mV 100 mV 0.25 V 0.83 V 1.42 V 2.0 V -2.7 -3 ...
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... TDA7514 Table 3. (continued) Symbol Gvlpf Gain of LPF Idischarl discharge current low at DEVTC Idischarh discharge current high at DEVTC Idischarstep discharge current step at DEVTC Vth1 Low threshold1 Vth2 Low threshold2 Vth3 Low threshold3 www.DataSheet4U.com Vth4 Low threshold4 Rdev1 Ratio of Vthreshold between strong and high deviation ...
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... Gvrectstep Rectifier Gain step Parameter Test Condition T14<2>=0 T14<2>=1 T14<7:6>=00 T14<7:6>=01 T14<7:6>=10 T14<7:6>=11 @SDpin @SDpin T20<3:0>=0000 T20<3:0>=1111 T8<4>=0 T8<4>=1 T8<5>=0 T8<5>=1 T18<7>=0 T18<7>=1 T18<5:4>=00 T18<5:4>=01 T18<5:4>=10 T18<5:4>=11 T15<7:5>=000 T15<7:5>=111 TDA7514 Min Typ Max Unit 2. 0.4 V 3.4 V 0.2 ...
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... TDA7514 Table 3. (continued) Symbol Smeter Control for SNC and HCC Gvsml Gain minimum Gvsmh Gain maximum Gvsmstep Gain step Quality_ACMPout (High output corresponds to good quality) Gqacmp1mp Gain output level1 for multipath T25<5:4>=01 Gqacmp2mp Gain output level2 for multipath T25<5:4>=10 Gqacmp3mp Gain output level3 for multipath T25<5:4>=11 www ...
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... Level at AMMIX1IN+ @IAGCOUT = 1µA, RF=999KHz, Set=31 Min Typ Max 0.1 emf 0.2 emf 0.2 emf 0.5 emf 0.2 370 - 3.5 1 130 94.4 115.5 TDA7514 Unit dBµV emf dB dBµV emf % % % % % mV rms dB dBµV emf KΩ dBµV dBµV dBµV 13/74 ...
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... TDA7514 Table 4. (continued) Symbol AGC1 Narrow Band AGC (input: AMMIXER2in; FEAGC in open-loop configuration) NAGCspl Starting point minimum NAGCsph Starting point maximum AGC1 Ultra Narrow Band AGC (input: AMIF2IN+; FEAGC in open-loop configuration) UNAGCspl Starting point minimum www.DataSheet4U.com UNAGCsph Starting point maximum AGC1 Output ...
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... T14<1:0>=11 @AMIF2AMPIN=50dBµV @AMIF2AMPIN=70dBµV @AMIF2AMPIN=90dBµV T16<5>=0 T16<5>=1 T16<5>=0 T16<5>=1 @VFSM=2.6V @VFSM=2.6V @SD pin @SD pin T29<3:0>=0000 T29<3:0>=1111 Output resistance AMAGC1TCpin Output resistance AMAGC1TCpin T31<3:0>=0000 T31<3:0>=0001 T31<3:0>=0010 T31<3:0>=0011 TDA7514 Min Typ Max Unit 0.4 V 1.6 V 1.8 V 21.5 dB 4.5 dB 2.5 dB 0.8 V 2.2 V 4.4 ...
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... TDA7514 Table 4. (continued) Symbol Voffset4 Rectifier offset4 Voffset5 Rectifier offset5 Voffset6 Rectifier offset6 Voffset7 Rectifier offset7 Voffset8 Rectifier offset8 Voffset9 Rectifier offset9 Voffset10 Rectifier offset10 Voffset11 Rectifier offset11 Voffset12 Rectifier offset8 www.DataSheet4U.com Voffset13 Rectifier offset9 Voffset14 Rectifier offset10 Voffset15 Rectifier offset11 ...
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... Mono, PTH=0 10 0.5 Deemphasis=50µ Deemphasis=75µ Deemphasis=50µs, AM Deemphasis=75µs, AM 4.7 f=19kHz, Deemphasis=75µs 40 f=38kHz, Deemphasis=75µs f=57kHz, Deemphasis=75µs f=76kHz, Deemphasis=75µs Traffic Radio f = 57kHz f = 67kHz f = 114kHz f = 190kHz TDA7514 Typ. Max. Unit 0.5 1.25 V RMS 100 130 kΩ 30 kΩ 0.5 dB 5. ...
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... TDA7514 3.4.1 NOTES TO THE CHARACTERISTICS 3.4.1.1 Intermodulation Suppression measured with: 91% pilot signal 10kHz or 13kHz. 3.4.1.2 Traffic Radio (V.F.) Suppression www.DataSheet4U.com measured with: 91% stereo signal; 9% pilot signal; fm=1kHz; 5% subcarrier (f=57kHz, fm=23Hz AM, m=60%) 3.4.1.3 SCA ( Subsidiary Communications Authorization ) measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA - subcarrier ( f lated ). 3.4.1.4 ACI ( Adjacent Channel Interference ) measured with: 90% mono signal ...
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... VMPX=0mV VMPX=50mV, f=150kHz VMPX=200mV, f=150kHz TDA7514 Min. Typ. Max. Unit 260 mV OP ...
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... TDA7514 Table 7. (continued) Symbol Parameter Noise rectifier adjustment through Multipath (2) Signal PEAK in Testmode V ADJMP AM Noise Blanker T AM delay time D Corner frequency delay filter AM configuration www.DataSheet4U.com AM config AM Noise Detector High Pass Frequency fc AM Noise Detector High HP Pass Filter Order Suppression Pulse ...
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... HCC control from level (where level = Smeter * 1.0): VHCL = (or VHCL = c * VHCH) for HCC control from SNC: VHCL = TDA7514 Typ. Max. Unit 16. ...
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... TDA7514 Table 8. Quality Actuators (continued) Symbol Parameter ATT MAX/MIN The maximum high cut attenuation can be selected via I NOTES: - The maximum high cut frequency setting can make the maximum attenuation lower than this. But then you effectively have a fixed rolloff filter, because the max high cut frequency will keep the hcc filter frequency from moving any higher, and the max high cut attenuation will keep the hcc filter frequency from moving any lower ...
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... RMS 20Hz-20kHz,flat; all stages 0dB 20Hz-20kHz,flat; all stages 0dB Differential = 1kHz CM RMS 10kHz CM RMS 20Hz-20kHz,flat; all stages 0dB all flat f Beep1 f Beep2 f Beep1 f Beep2 TDA7514 Min. Typ. Max. Unit 70 100 130 kΩ RMS 80 100 0.5 1 1.5 ...
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... TDA7514 Table 9. (continued) LOUDNESS CONTROL Symbol Parameter A Max Attenuation MAX A Step Resolution STEP f LPF Peak Frequency PeakLPF f HPF Peak Frequency PeakLPF www.DataSheet4U.com VOLUME CONTROL G Max Gain MAX A Max Attenuation MAX A Step Resolution STEP E Attenuation Set Error A E Tracking Error Steps ...
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... -83 0.5 80 Adjacent Attenuation Steps d = 0.3% 1.8 3.8 BW=20Hz to 20 kHz all gain = 0dB all gain = 0dB flat; Vo=2V RMS V =1V all stages 0dB IN RMS; 80 TDA7514 Typ. Max. Unit 2 2 ±10 dB ±15 ± 1 kHz 12.5 15 kHz 15 18 kHz 17 ...
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... The TDA7514 connected to the bus will compare its own hardwired addresses with the slave address be- ing transmitted, after detecting a START condition. After this comparison, the TDA7514 will generate an "acknowledge" on the SDA line and will do either a read or a write operation according to the state of R/W bit. ...
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... Read Operation If the master sends a slave address word with the R/W bit set to 1, the TDA7514 will transmit one 8-bit data word (see the relevant tables in "Register Organization" section). Figure 3. Frame example Section 1 CHIP ADDRESS MSB Section2 CHIP ADDRESS MSB ...
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... TDA7514 Table 10. Symbol Parameter f SCL Clock Frequncy SCL t SCL Low to SDA Data Valid AA t Time the Bus must be free for the out New Transmission t Start Condition Host Time HD-STA t Clock Low Period LOW t Clock High period HIGH t Start Conditions Setup Time SU-SDA www ...
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... Qual AdjCh Rectifier PLL test MUXer offset, PLL test MUXer, 456KHz VCO adjustment start 456KHz VCO adjustment manual/ auto (manual mode) FM Smeter stop threshold, ISS Smeter Threshold Smeter test MUXer, SD pin Sd pin configuration configuration Seek, ISS adjacent channel detector Fm mixer1 adjust, FM AGC TDA7514 29/74 ...
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... TDA7514 Table 14. Address Organization (Tuner Section) (continued) MSB Subaddr not used 25 QualityOut AC gain FMNAGC threshold 26 LSD 27 not used FM demod NB Test disable EXT WB 28 connect enable AMIF 2AMP gain 29 www.DataSheet4U.com AM FAST 30 not used AGC2 31 not used Table 15. SUBADDRESS 0: Change Pump Control ...
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... Lock detector doesn’t control charge pump Lock detector controls charge pump FUNCTION 0 LSB = 0 1 LSB = 1 0 LSB = LSB = 252 1 LSB = 253 0 LSB = 254 1 LSB = 255 FUNCTION 0 MSB = 0 1 MSB = 256 0 MSB = 512 - - 0 MSB = 64768 1 MSB = 65024 0 MSB = 65280 1 MSB = 65536 TDA7514 31/74 ...
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... TDA7514 Table 19. SUBADDRESS 4: PLL Reference Counter 1 (LSB) MSB www.DataSheet4U.com Table 20. SUBADDRESS 5: PLL Reference Counter 2 (MSB) MSB Note ...
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... FM VCO divider control all off divide by 2 divide by 3 divide by 3 phase (I) = -90° ≥ high side conversion phase (I) = +90° ≥ low side conversion TDA7514 @SG 88.0 90.7 92.7 94.4 95.5 96.6 97.6 98.4 99.2 99.9 100.6 101.2 101.7 102.2 102.7 103.1 103.6 104.0 104 ...
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... TDA7514 Table 23. SUBADDRESS Counter Control 1 and AM S.S. Threshold MSB www.DataSheet4U.com Table 24. SUBADDRESS 9: If Counter Control 2 MSB 34/74 LSB ...
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... FUNCTION 0 LSB = 0 1 LSB = 1 0 LSB = LSB = 252 1 LSB = 253 0 LSB = 254 1 LSB = 255 FUNCTION 0 MSB = 0 1 MSB = 256 0 MSB = 512 - - 1 MSB = 15616 0 MSB = 15872 1 MSB = 16128 IF Counter Mode not valid IF counter FM mode (10.7KHz) IF counter AM mode (450KHz) not valid TDA7514 35/74 ...
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... TDA7514 Table 27. SUBADDRESS 12: AM NAGC , AM VCO Divider MSB www.DataSheet4U.com 36/74 LSB ...
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... V =1.4 SmeterL SmeterH Adjacent channel mute start/stop point (FM) V =1, V =4.5 AdjChL AdjChH =4.5 AdjChL AdjChH Full soft mute level -4dB (step = -2.5dB) -21.5dB Full adjacent channel mute level 0dB -6dB -9dB -12dB TDA7514 @ 37/74 ...
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... TDA7514 Table 30. SUBADDRESS 15: Quality detection: gain and offset on FSmeter (SNC), multipath detector rectifier gain MSB www.DataSheet4U.com Table 31. SUBADDRESS 16: Quality Detection: Adjacent channel detector, HCC source, Quality fast test, Quality AF check, ISS filter test MSB ...
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... Smeter users connected to #ACinL unfilt Smeter source disconnected form users std ISS test MUXer (TMODE1) connected to #SMETERTC Smeter filt (60ms/1s) R disconnected from #SMETERTC TDA7514 FUNCTION FM IF Amp1 gain ISS filter center frequency Unfiltered Smeter test connection ISS test MUXer connection ...
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... TDA7514 Table 33. SUBADDRESS 18: PLL Test, 456KHz VCO Adjust Start, ISS MP Gain and SD OUT MODE MSB www.DataSheet4U.com 40/74 LSB ...
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... FM ISS Smeter threshold (∆ from Softmute thresh. (*)). 0 mV step 67 mV 467 -467 mV LSB FUNCTION 2 CBUS) 2 CBUS) 2 CBUS) 2 CBUS) FUNCTION FUNCTION D0 Soft mute threshold 0 0.3V 1 0.4V 0 1.6V 1 1.8V TDA7514 OFF ON OFF ON minfreq maxfreq 41/74 ...
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... TDA7514 Table 37. SUBADDRESS pin configuration, Smeter test MUXer MSB ...
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... ISS disable short FUNCTION D0 FM mixer1 phase adjust. 0 -7° 1 -6° 0 -5° 0° 0 +1° 1 +2° +8° FM mixer1 gain adjust NAGC threshold MSB (LSB in byte 26) FM AGC topology NAGC on, KAGC off NAGC off, KAGC on TDA7514 Q 2.3 7.7 2.0 8.4 43/74 ...
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... TDA7514 Table 40. SUBADDRESS 24: XTAL adjustment, clock sep MSB Table 41. SUBADDRESS 25 : Multipath DETECTOR, QUALITY OUT MSB 44/74 LSB XTAL ajustment ...
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... MSB = FUNCTION LSB FUNCTION D0 FM audio demodulator current adjust +0.167 µ +2.51 µ µA 0 -0.167 µ -2.51 µ Demodulator Noise Blanker NB off setting 1 setting 2 setting 3 TDA7514 45/74 ...
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... TDA7514 Table 44. SUBADDRESS 28 : Smeter slider, External WB, testing MSB Table 45. SUBADDRESS 29: AM stop station Amplifier Gain MSB ...
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... Vaudio-Vref > 1.5 V then fast on) FUNCTION threshold 100 mV 1 146 mV 0 212 mV 1 257 mV 0 312 mV 1 362 mV 0 439 mV 1 485 mV 0 541 mV 1 587 mV 0 653 mV 1 700 mV 0 755 mV 1 800 disable threshold 4.4 V 2.2 V 0.5 V OFF TDA7514 47/74 ...
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... TDA7514 4.10 Section 2 (Stereodecoder, Audioprocessor + Tuner)Section 1 (Turner) Table 48. ADDRESS MSB Table 49. SUBADDRESS MSB S7 S6 testcon azhold www.DataSheet4U.com 4.11 READ MODE: ISS OUTPUT MSB S7 S6 Table 50. AUDIO PROCESSOR / STEREO DECODER - RELATED BYTES MSB Subaddr loudness 0 gain correctionl 1 soft step loudness gain pass ...
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... ISS filter control matrix VSBL VSBL generation, HC range FUNCTION D0 Source Selector 0 Quasi differential input 1 Mono differential input 0 Single ended input 1 Turner 0 Turner 1 internal beep 0 mute 1 not allowed Input Gain 0dB 1dB - 14dB 15dB Loudness filter gain correction higher gain lower gain TDA7514 49/74 ...
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... TDA7514 Table 52. Subaddress 1,4,5,6,7: Volume Spkr atten. LF, RF, LR, RR MSB www.DataSheet4U.com Table 53. SUBADDRESS 2: Loudness MSB 50/74 LSB ...
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... FUNCTION D0 Gain/Attenuation 0 -15dB 1 -14dB - - 0 -1dB 1 0dB 1 0dB 0 1dB - - -14dB 0 -15dB Center Frequency 10.0kHz 12.5kHz 15kHz 17.5kHz Speaker Coupling External (AC) Internal (DC) LSB FUNCTION D0 Gain/Attenuation 1 -15dB 0 -14dB - - 1 -1dB 0 0dB 0 0dB 1 1dB - - 0 -14dB 1 -15dB Quality Factor 1.00 1.25 1.50 2 Bass Soft Step off on TDA7514 51/74 ...
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... TDA7514 Table 56. SUBADDRESS 9: Configuration Audio Processor I MSB (*) cfr. APSD MUTE table Table 57. SUBADDRESS 10: Configuration Audio Processor II MSB 52/ ...
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... STD mute ctrl. from pin STD In Gain +5.75 dB +4.00 dB +2.25 dB +0. old mode (if AM= new mode (if AM=1) Force Mono Mono/Stereo switch automatically Noise Blanker PEAK charge current low high Pilot detector threshold high low Deemphasis time constant FM AM (dep. on source selector 14.9 kHz 75 us 22.3 kHz TDA7514 53/74 ...
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... TDA7514 Subaddress 13: Stereodecoder Noise Blanker MSB www.DataSheet4U.com 54/74 LSB FUNCTION Roll Off Compensation 0 Not allowed 1 7. 13. 20.2% 0 Not allowed 1 19.6% 0 21.5% ...
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... VHCH Shift ("a" factor) (**) 1 97% 0 73% 0 50% 0 32% Strong multipath-controlled Noise Rectifier Discharge Resistor (if bit7 byte infinity R = 56Mohm R = 33Mohm R = 18Mohm Noise Blanker Time 1130 755 950 651 us TDA7514 (AM) 166% 156% 147% 137% 128% 118% 109% 99% 55/74 ...
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... TDA7514 Table 62. SUBADDRESS 16: Noiseblanke MSB www.DataSheet4U.com (**) cfr. HCC/SB threshold table (***) lower limit for possible automatic HC filter position; frequency is given by the following formula: with N given by the software table abovef the minimum HC filter pole frequency depends on the HC range selected (see byte 28 bits <4:3>) ...
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... FUNCTION FUNCTION Max/Min High Cut Frequency (***) 0 20 kHz/ 10 kHz kHz/ 2 kHz AM 7.2kHz LPF OFF AM 7.2kHz LPF ON High Cut Filter limiting (AM) Fix Maximum High Cut Frequency Fix Minimum High Cut Frequency Fixed High Cut OFF Fixed High Cut ON TDA7514 57/74 ...
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... TDA7514 Table 65. SUBADDRESS 19: Stereo Decoder Test Multiplexer MSB www.DataSheet4U.com Table 66. SUBADDRESS 20: ISS Weather Band Controls and Adjacent Channel thresholds MSB 58/74 LSB ...
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... MP=1 disables "ac+" detection MP=1 disables "ac" and "ac+" detection LSB FUNCTION D0 peak detector discharge current 0 6uA 1 8uA 0 10uA 1 12uA 0 14uA 1 16uA 0 18uA 1 20uA "dev" threshold 30 kHz 45 kHz 60 kHz 75 kHz dev+ / dev thresholds ratio 1.5 1.4 1.3 1.0 not used TDA7514 59/74 ...
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... TDA7514 Table 69. SUBADDRESS 23: ISS Detector MSB www.DataSheet4U.com Table 70. SUBADDRESS 24: ISS Test MSB 60/74 LSB LSB ...
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... LSB FUNCTION D1 D0 VSBL ("d" factor) (**) 58% High Cut filter range 20 kHz - 4 kHz 10 kHz - 2 kHz 4 kHz - 800 Hz 4 kHz - 800 Hz TDA7514 61/74 ...
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... TDA7514 Table 74. Audio Processor / Stereo Decoder Mute BYTE 9 BYTE 9 BIT 0 BIT ...
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... LIMITING AND DEMODULATION The TDA7514 features a fully integrated FM demodulator which requires a lower IF than 10.7 MHz. There- fore a 2nd mixer is provided to down-convert IF1 down to 450 kHz. The 10.25 MHz frequency needed to drive the 2nd mixer is provided by the XTAL oscillator. Limiting is performed at IF2 through a 5 stage lim- iter ...
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... TDA7514 VARIABLE-BANDWIDTH SELECTIVITY SYSTEM (ISS) The TDA7514 is equipped with the Intelligent Selectivity System that automatically performs IF bandwidth reduction in presence of strong adjacent channels or weak desired signal. A three position filter is available at IF2; its bandwidth settings are: 120 kHz, 80 kHz and 22 kHz (the latter only for additional on-board WB filtering) ...
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... QUALITY The FM quality section of the TDA7514 generates the control signals for all the quality-related functions. These quality signals are: filtered Smeter, adjacent channel content, multipath content. The controlled functions are: AGC keying, soft mute, adjacent channel mute, stereo blend, high cut, audio noise blanker. ...
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... I and Q portions of the LO for the FM image rejection mixer. 5.3.2 XTAL OSCILLATOR A 10.25 MHz crystal oscillator is used to generate the reference frequency of the tuning PLL and of the switched capacitor circuits of the TDA7514. The oscillation frequency can be finely adjusted by program- ming internal capacitors (5 bit). 66/74 ...
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... Since the VCO tuning range is small, the VCO needs being adjusted to a setting that ensures lock is achieved when a pilot tone is present. On the current TDA7514 version it is necessary to perform this alignment during the car-radio test phase, by injecting a 19 kHz tone into the stereo decoder and changing the VCO programming until a lock condition is reached ...
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... In case the transmission is stereo possible if so desired to set it to forced mono to improve the re- ceived SNR. The TDA7514 stereo demodulator additionally performs the functions of roll-off compensation and pilot cancelling. The amount of the former is programmable. The latter function is activated when an FM MPX signal with pilot tone is detected ...
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... The signal is then applied to the same peak-to-average detector that is used for FM; the difference is that the deviation detector is not influencing the threshold generation in this case. The noise blanking time, pro- grammable also for AM, is about 30 times longer than for FM. TDA7514 69/74 ...
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... PLL hold) from the audio processor soft mute. 5.5.3 LOUDNESS FILTER The TDA7514 features a loudness function made attenuator steps, a second order LP filter with programmable corner frequency and a defeatable high pass filter with programmable corner frequency. ...
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... It is furthermore possible to mix an external source (typically the chime source) on all the four outputs, selecting on which outputs the mixing must take place (any combination is allowed). The volume of the mixing source cannot be changed internally. TDA7514 71/74 ...
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... TDA7514 Table 75. TQFP80 Mechanical Data & Package Dimensions mm DIM. MIN. TYP 0.05 A2 1.35 1.40 B 0.22 0.32 C 0.09 D 16.00 D1 14.00 www.DataSheet4U.com D3 12.35 e 0.65 E 16.00 E1 14.00 E3 12.35 L 0.45 0. PIN 1 IDENTIFICATION 80 1 72/74 inch MAX. MIN. TYP. MAX. 1.60 0.063 0.15 0.002 0.006 1.45 0.053 0.055 0.057 0.38 0.009 0.013 0.015 0.20 0.003 0.008 0.630 ...
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... Table 76. Revision History Date June 2005 www.DataSheet4U.com Revision 1 First Issue Description of Changes TDA7514 73/74 ...
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... TDA7514 www.DataSheet4U.com Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...