TDA7406T STMicroelectronics, TDA7406T Datasheet
TDA7406T
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TDA7406T Summary of contents
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... NO EXTERNAL ADJUSTMENTS AM/FM NOISEBLANKER WITH SEVERAL TRIGGER CONTROLS PROGRAMMABLE MULTIPATH DETECTOR PIN CONNECTION (Top view) April 2001 CAR RADIO SIGNAL PROCESSOR TQFP44 ORDERING NUMBER: TDA7406T QUALITY DETECTOR OUTPUT Digital control C-BUS INTERFACE DESCRIPTION The device includes a high performance audio pro- cessor with 7 bands equalizer and spectrum analyzer plus a stereo decoder-noiseblanker ...
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... TDA7406T SUPPLY Symbol Parameter V Supply Voltage S I Supply Current S SVRR Ripple Rejection @ 1kHz THERMAL DATA Symbol R Thermal Resistance Junction-pins max th j-pins ABSOLUTE MAXIMUM RATINGS Symbol V Operating Supply Voltage S T Operating Temperature Range amb T Storage Temperature Range stg ESD: All pins are protected against ESD according to the MIL883 standard. ...
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... BLOCK DIAGRAM MIXINLF MIXINLR MIXINRF MIXINRR ACINR ACINL SWIN ACOUTR ACOUTL SWACOUT TDA7406T 3/49 ...
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... TDA7406T 1 AUDIOPROCESSOR PART Features: Input multiplexer – Pseudo differential CDC stereo input, programmable as single-ended input. – 3 single-ended stereo inputs. – 4single-ended mono inputs. – Input gain adjust 0...15dB in 1dB steps. – Internal offset-cancellation (autozero). Beep – Internal beep generator with 4 different frequencies. ...
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... Max. Gain MAX Test Condition all single ended Inputs Adjacent Gain Steps MIN MAX Differential 1kHz CM RMS 10kHz CM RMS Mix-Gain = 6dB f Beep1 f Beep2 f Beep3 f Beep4 Main / Mix-Source TDA7406T Min. Typ. Max. Unit 70 100 130 k 2.2 2.6 V RMS 80 100 0 0.5 mV ...
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... TDA7406T Table 1. ELECTRICAL CHARACTERISTICS (continued) (V =9V; T =25°C; R =10k ; all gains=0dB; f=1kHz; unless otherwise specified) S amb L Symbol Parameter A Max. Attenuation MAX A Step Resolution STEP E Attenuation Set Error A E Tracking Error Steps DC SOFT MUTE A Mute Attenuation MUTE T Delay Time D V Low Threshold for SM-Pin ...
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... AUDIO OUTPUTS V Clipping Level CLIP R Output Load Resistance L Test Condition DC = off DC = on, 15dB boost Window 1 Window 2 Window 3 Adjacent Attenuation Steps Signal/Mix In Thd=0.3% TDA7406T Min. Typ. Max. Unit - 3 141 157 173 Hz 356 396 436 Hz 0.9 1 1.1 kHz 2.26 2.51 2.76 kHz 5.70 6 ...
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... TDA7406T Table 1. ELECTRICAL CHARACTERISTICS (continued) (V =9V; T =25°C; R =10k ; all gains=0dB; f=1kHz; unless otherwise specified) S amb L Symbol Parameter C Output Load Capacitance L R Output Impedance OUT V DC Voltage Level DC HIGH PASS f Highpass corner frequency HP SUBWOOFER ATTENUATOR R Input Impedance in G Max. Gain MAX A Max ...
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... It is possible to enable/disable the mixing feature (ratio 50%) at the outputs stages between whichever input source and one of the following signals: Beep, Phone, Navigator and Tuner/TIM. 2.1.4 Beep Generator There are four possible selectable beeping frequencies: 600Hz, 780Hz, 1.56KHz and 2.4KHz. Figure 1. Input-stages TDA7406T input-impedance at 9/49 ...
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... In some cases, for example if the µP is executing a refresh cycle of the IIC-Bus-programming not useful to start a new AutoZero-action because no new source is selected and an undesired mute would appear at the outputs. For such applications the TDA7406T could be switched in the AutoZero-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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... Flat mode: Selectable flat-mode. In flat mode the loudness stage works as a 0dB to -19dB attenuator. Figure 2. Loudness Attenuation @ f 0.0 -5.0 -10.0 dB -15.0 -20.0 -25.0 10.0 Figure 3. Loudness Center frequencies @ Attn. = 15dB 0.0 -5.0 dB -10.0 -15.0 -20.0 10.0 = 400Hz. P 100.0 1.0K Hz 100.0 1.0K Hz TDA7406T = 400Hz in Figure 2). P 10.0K 10.0K 11/49 ...
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... TDA7406T Figure 4. 1st and 2nd Order Loudness @ Attn. = 15dB, fP=400Hz 0.0 -5.0 dB -10.0 -15.0 -20.0 10.0 2.4 Soft Mute The digitally controlled Soft Mute stage allows signal muting/demutingwith a programmable slope. The Mute time is selectable among 4 values: 0.48, 0.96, 123 and 324ms. The mute process can either be activated by the ...
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... Quality Factors: The four possible quality factors are 1, 1.4, 1.8 and 2.2 (see Figure 9). The center frequency, Q, DC-mode and boost/cut can be set fully independently for each filter. Figure 10 shows the superposition of all equalizer filter curves for different quality factors. SS Time TDA7406T 13/49 ...
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... TDA7406T Figure 7. Equalizer filter control @ -10 -15 20 Figure 8. Center frequencies @ Gain = 15dB 1 14/49 = 1kHz 1.0 Center 100 1k 100 1k 10k 20k Hz Hz 20k ...
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... Figure 9. Quality factors @ boost = 15dB Figure 10. Superposition of all EQ bands @ boost = 15dB 2.6.2 DC-Mode The filter stage 1 (62/100Hz) has a programmable +4dB DC-gain when the boost is set at +15dB (See Figure 11). = 1kHz Center 100 1k 100 1k TDA7406T Hz 20k 20k Hz 15/49 ...
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... TDA7406T Figure 11. EQ band1, normal- and DC-mode @ boost = 15 dB Note: The center frequency, Q, DC-mode and boost/cut can be set fully independently for each filter. 2.7 Subwoofer Application There is one separate subwoofer output. A low-pass filter stage at this output allows the selection of three dif- ferent frequencies: 80/120/160Hz ...
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... Figure 13. Spectrum analyzer block diagram Figure 14. Timing spectrum analyzer . SAdel remains high for the time t clk to be held at high potential. Figure 13 shows the block diagram and Figure clk TDA7406T input. On the clk . out . Note that a proper intres 17/49 ...
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... TDA7406T 2.9 AC-coupling In some applications additional signal manipulations are desired. For this purpose an AC-coupling is placed be- fore the speaker-attenuators, which can be activated or internally shorted by I²C-Bus. In short condition the in- put-signal of the speaker-attenuator is available at the AC-outputs. The input-impedance of this AC-inputs is 50k . In addition there are Mix In speaker with a mixing ratio of 50% (see Figure 15) ...
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... During the Test Mode, which can be activated by setting bit I cessor testing byte, several internal signals are available at the Navi pin. During this mode the input resistance of 100k is disconnected from the pin. The internal signals available are shown in the Data-byte specification. of the subaddress byte and D 2 TDA7406T of the audiopro- 0 19/49 ...
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... TDA7406T 3 STEREODECODER PART 3.1 Features: No external components necessary PLL with adjustment free, fully integrated VCO Automatic pilot dependent MONO/STEREO switching Very high suppression of intermodulation and interference Programmable Roll-Off compensation Dedicated RDS-Softmute Highcut and Stereoblend-characteristics programmable in a wide range FM/AM noiseblanker with several threshold controls ...
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... V LEVEL HCL see section 2.7 see section 2.8 see section 2.8 see section 2.8 see section 2.9 see section 2.9 see section 2.9 see section 2.9 see section 2.9 see section 2.9 TDA7406T Typ. Max. Unit µs 44 62.5 80 µs 50 ...
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... TDA7406T Table 2. ELECTRICAL CHARACTERISTICS (continued 9V, de-emphasis time constant = 50µs, MPX input voltage V S modulation frequency = 1kHz, input gain = 6dB, T Symbol Parameter Intermodulation (Note =10kHz, f =1kHz mod spur 3 f =13kHz, f =1kHz mod spur Traffic Radio (Note 2) 57 Signal f=57kHz SCA - Subsidiary Communications Authorization (Note 3) ...
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... Dual MPX Usage 3.2.1 Feature Description The TDA7406T is able to support a twin tuner concept via the Dual-MPX-Mode. The DC-Voltage at the CMPX- pin controls whether one or both MPX-signals are used to decode the stereo FM-signal. Therefor two window- comparators with a characteristic as shown in Figure 17 are implemented (Please note that the thresholds have a hysteresis of 500mV) ...
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... TDA7406T NOISE BLANKER PART Features: AM and FM mode internal 2nd order 140kHz high-pass filter for MPX path internal rectifier and filters for AM-IF path programmable trigger thresholds trigger threshold dependent on high frequency noise with programmable gain additional circuits for deviation- and fieldstrength-dependent trigger adjustment ...
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... D C Test conditions Signal HOLDN in Testmode Signal HOLDN in Testmode Signal PEAK in Testmode Signal PEAK in Testmode Signal PEAK in Testmode Signal AM-RECTIFIER in Test- mode Signal AM-RECTIFIER in Test- mode = 2 µs, THIGH= 2 µs and HIGH F TDA7406T Min. Typ. Max 25 1.2 01 800 10 1.0 11 640 00 0 ...
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... TDA7406T Figure 18. Trigger Threshold vs MIN . 65m 30m V Figure 19. Deviation Controlled Trigger Adjustment Figure 20. Fieldstrength Controlled Trigger Adjustment 26/49 PEAK 0 . ois sig 260 mV (00 ) 220 mV (01 ) 180 140 ISE 1 ete c tor ...
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... Rectifier Gain RECTMP I Rectifier Charge Current CHMP I Rectifier Discharge Current DISMP Quality Detector A Multipath Influence Factor 4 FUNCTIONAL DESCRIPTION OF STEREODECODER Figure 21. Block diagram of the stereodecoder Test Conditions stereodecoder locked on Pilot tone TDA7406T Min. Typ. Max. Unit 19 kHz 7 0.25 µA 0 0.70 ...
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... IF-devices. 4.1 Stereodecoder-Mute The TDA7406T has a fast and easy to control RDS-Mute function which is a combination of the audioproces- sor's SoftMute and the high-ohmic mute of the stereodecoder. If the stereodecoder is selected and a SoftMute command is sent (or activated through the SM-pin) the stereodecoder will be set automatically to the high-ohmic mute condition after the audio-signal has been soft muted. Hence a checking of alternate frequencies could be performed. Additionally the PLL can be set to “ ...
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... If the tun- er's attenuation at 38kHz range from 7.2% to 31.0% the TDA7406T 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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... TDA7406T 4.8 Stereoblend Control The stereoblend control block converts the internal LEVEL-voltage (LEVELSB) into an demodulator compatible analog signal which is used to control the channel separation between 0dB and the maximum separation. Inter- nally this control range has a fixed upper limit which is the internal reference voltage REF5V. The lower limit can be programmed between 20 and 70% of REF5V in 3 ...
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... Also noise with a frequency 140kHz increases the PEAK voltage. The PEAK voltage is fed to a threshold generator, which adds to the PEAK-voltage a DC-dependent threshold VTH. Both signals, RECT and PEAK+VTH are fed to a comparator which triggers a re-triggerable flip-flop. The flip-flop's output activates the sample-and-hold circuits in the signal path for the selected duration. TDA7406T 31/49 ...
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... The slewrate is measured with R 5.3.4 AM mode of the Noiseblanker The TDA7406T noiseblanker is also suitable for AM noise cancelling. The detector uses in AM mode the 450kHz unfiltered IF-output of the tuner for spike detection. A combination of programmable gain-stage and lowpass- filter forms an envelope detector which drives the noiseblanker's input via a 120kHz 1.st order highpass. In order to blank the whole spike in AM mode the hold-times of the sample and hold circuit are much longer then in FM (640µ ...
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... Figure 28. Block diagram of the Multipath-Detector 7 QUALITY DETECTOR The TDA7406T 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 follow- ing formula: The noise-signal is the PEAK-signal without additional influences (see noiseblanker description). The factor 'a' can by programmed from 0 ...
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... TDA7406T 9 I²C BUS INTERFACE 9.1 Interface Protocol The interface protocol comprises: -a start condition (S) -a chip address byte (the LSB bit determines read / write transmission) -a subaddress byte -a sequence of data (N-bytes + acknowledge) -a stop condition (P) CHIP ADDRESS MSB LSB R/W ACK S = Start R/W = “0” -> Receive-Mode (Chip could be programmed by µP) “ ...
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... Subwoofer / Spectrum analyzer / HighPass Configuration Audioprocessor Configuration Audioprocessor Speaker attenuator Speaker attenuator Speaker attenuator Speaker attenuator Subwoofer attenuator Mixing Level Control Testing Audioprocessor Stereodecoder Noise-Blanker Noise-Blanker AM-Noiseblanker High-Cut Control Fieldstrength & Quality Multipath-Detector Stereodecoder Adjustment Configuration Stereodecoder Testing Sterodecoder TDA7406T FUNCTION 35/49 ...
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... TDA7406T 9.3 DATA BYTE SPECIFICATION The status after Power-On-Reset is marked bold-face / underlined in the programming tables. Table 5. Input Selector (0) MSB Table 6. Loudness (1) MSB 36/49 LSB Source Selector CDC/ Tape Phone Navi Tuner TIM Input Gain 0 0dB 1 1dB : : 0 14dB 1 15dB Mute off on LSB ...
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... Equalizer cut/boost level -15dB -14dB : : : : -1dB 0dB 0dB +1dB : : : : +14dB +15dB Equalizer Q-Factor 2.2 1.8 1.4 1.0 Equalizer Center Frequency (only Subaddresses 3,8,9) 62Hz(addr 3)/4kHz(addr 8)/15kHz(addr 9) 100Hz(addr 3)/6.24kHz(addr 8)/16kHz(addr 9) DC mode EQ Band 1 (62/100 Hz, Subaddress. 4!) on off TDA7406T ATTENUATION FUNCTION 37/49 ...
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... TDA7406T Table 9. Mixing Programming (10) MSB Table 10. SoftMute (11) MSB 38/49 LSB Mixing 0 Mute 1 enable Mixing Source 0 0 Beep 0 1 Phone 1 0 Navi 1 1 Tuner / TIM Mixing Target Speaker LF off Speaker LF on Speaker RF off Speaker RF on Speaker LR off Speaker LR on Speaker RR off Speaker RR on must be “ ...
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... CDC Input Mode 0 single ended 1 pseudo differential CDC Input Gain SoftStep Volume 0 off 1 on SoftStep Time 320µs 1.28ms 5.12ms 20.4ms Loudness flat filter ON Mixing Selector Tuner/TIM Switch TIM Tuner Tuner Selection AM Stereodecoder TDA7406T FUNCTION pin In pins InR pin In FUNCTION 39/49 ...
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... TDA7406T Table 13. Configuration Audioprocessor II (14) MSB Table 14. Speaker and Subwoofer Level Control (15,16,17,18,19) MSB 40/49 LSB Pause Detector 0 off 1 on Pause ZC Window 0 0 160mV 0 1 80mV 1 0 40mV 1 1 not allowed Front Speaker Mixing AC AC coupling (Mix AC coupling (AC DC coupling Rear Speaker ...
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... Spectrum Analyzer Filter 6.34kHz 1 1 Spectrum Analyzer Filter 0 0 Not Allowed 0 0 not used 0 1 200kHz Oscillator 1 0 NB-Hold 1 1 internal Reference Clock external internal AZ Function off on SC-Clock Fast Mode Normal Mode TDA7406T ATTENUATION FUNCTION 62Hz 157Hz 400Hz 1kHz 16kHz 41/49 ...
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... TDA7406T Table 17. Stereodecoder (22) MSB De-emphasis-Shift enabled (Subaddr.26/Bit7 = 0) Table 18. Noiseblanker I (23) MSB 42/49 LSB STD Unmuted 1 STD Muted 0 0 IN-Gain 11dB 0 1 IN-Gain 8.5dB 1 0 IN-Gain 6dB 1 1 IN-Gain 3.5dB Stereodecoder Input MPX Forced MONO MONO/STEREO switch automatically Pilot Threshold HIGH Pilot Threshold LOW De-emphasis 50µ ...
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... 33k 18k DC Strong Multipath influence on PEAK 18k off on (18k discharge if V LSB Stereodecoder Mode Rectifier Gain 6dB 8dB 10dB 12dB 14dB 16dB 18dB 20dB Rectifier Cut-Off Frequency 14.0kHz 18.5kHz 28.0kHz 56.0kHz must be “1” TDA7406T FUNCTION < 2.5V) MPout FUNCTION 43/49 ...
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... TDA7406T Table 21. High-Cut (26) MSB Table 22. Fieldstrength Control (27) MSB 44/49 LSB High-Cut 0 off 1 on max. High-Cut 0 0 2dB 0 1 5dB 1 0 7dB 1 1 10dB VHCH 42% REF5V 1 50% REF5V 0 58% REF5V 1 66% REF5V VHCL 16.7% VHCH 22.2% VHCH 27.8% VHCH 33.3% VHCH De-emphasis Shift ...
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... Gain = 0dB 1 disabled Charge Current at MP-Out 0.25µA 0.50µA Multipath on High-Cut Decay-Time 2ms 10ms Multipath influence on PEAK Discharge off -1V/ms LSB Roll-Off Compensation not allowed 7. 9. 13. 20. not allowed 19. 21. 25. 31.0% LEVEL Gain 0 0dB 1 0.4dB 0 0.8dB : : 1 6dB TDA7406T FUNCTION FUNCTION 45/49 ...
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... TDA7406T Table 25. Stereodecoder Configuration (30) MSB Using the Multipath Time-Constants for Stereo-Bland and High-Cut Table 26. Testing Stereodecoder(31) MSB Note: This byte is used for testing or evaluation purposes only and must not be set to other values than “11111100” in the application! 46/49 LSB Multipath Influence on High-Cut ...
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... Figure 29. Application Diagram TDA7406T 47/49 ...
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... TDA7406T mm DIM. MIN. TYP. MAX. A 1.60 A1 0.05 0.15 A2 1.35 1.40 1.45 B 0.30 0.37 0.45 C 0.09 0.20 D 12.00 D1 10.00 D3 8.00 e 0.80 E 12.00 E1 10.00 E3 8.00 L 0.45 0.60 0.75 L1 1.00 K (min.), 3.5˚(typ.), 7 (max 48/49 inch MIN. TYP. MAX. 0.063 0.002 0.006 0.053 ...
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... TDA7406T 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 ...