TDA7406 STMicroelectronics, TDA7406 Datasheet
TDA7406
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... Quality detector output Digital control 2 ■ I C-bus interface Description The TDA7406 udes a high performance audio incl processor with 7 bands equalizer and spectrum analyzer plus a stereo decoder-noiseblanker. The whole low frequency signal processing necessary for state-of-the-art as well as future car radios is therefore provided. ...
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... The Seven Band Equalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.6.1 4.6.2 4.7 Subwoofer Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.8 Spectrum analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2/64 Pseudo-differential stereo Input (PD Single-ended stereo Inputs, single-ended mono inputs and FM-MPX input 16 Mixing Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Beep Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 AutoZero for Stereodecoder-Selection . . . . . . . . . . . . . . . . . . . . . . . . . 17 AutoZero-Remain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 PAUSE Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Gain/Attenuation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Soft Step Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Equalizer Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 DC-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 TDA7406 ...
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... TDA7406 4.8.1 4.9 AC-coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.10 Speaker-Attenuator stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.11 Output Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.12 Audioprocessor Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5 Stereodecoder part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.1 Features 5.2 Stereodecoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3 Dual MPX Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6 Noise blanker part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.1 Features 6.2 Noise blanker electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7 Multipath detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7.1 Features: ...
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... Interface Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 13.1.1 13.1.2 13.1.3 13.2 Subaddress (receive mode 13.3 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 14 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 15 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 4/64 Over Deviation Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Multipath-Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 AM mode of the Noiseblanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Auto increment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 TRANSMITTED DATA (send mode Reset Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 TDA7406 ...
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... TDA7406 List of tables Table 1. Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 2. Thermal data Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 4. Audioprocessor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 5. Stereodecoder electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Table 6. Noise blanker electrical characteristics Table 7. Multipath detector electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Table 8. Subaddress (receive mode Table 9. Input Selector ( Table 10. Loudness ( Table 11. ...
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... Signal-Control via SoftMute-Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 26. Internal stereoblend characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 27. Relation between internal and external LEVEL-voltages for setup of Stereoblend . . . . . . 38 Figure 28. Highcut characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Figure 29. Block diagram of the noiseblanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Figure 30. Block diagram of the Multipath-Detector Figure 31. Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Figure 32. TQFP44 Mechanical Data & Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 6/64 TDA7406 ...
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... TDA7406 1 Block and pin connection diagram Figure 1. Block diagram MIXINLF MIXINLR MIXINRF MIXINRR ACINR ACINL SWIN ACOUTR ACOUTL SWACOUT Block and pin connection diagram 7/64 ...
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... Block and pin connection diagram Figure 2. Pin connection (Top view) 8/64 TDA7406 ...
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... TDA7406 2 Electrical specifications 2.1 Supply Table 1. Supply Symbol Parameter V Supply Voltage S I Supply Current S SVRR Ripple Rejection @ 1kHz 2.2 Thermal data Table 2. Thermal data Symbol R Thermal Resistance Junction-pins th j-pins 2.3 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V Operating Supply Voltage ...
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... Speakers – 4 independent speaker controls with separate mute. – Control range 95dB (+15...-79dB) in 1dB steps with soft step. – 4 independent programmable mix inputs with 50% mixing ratio ● Subwoofer 10/64 nd order frequency response switch-capacitors filters. nd order frequency response switch-capacitors filters TDA7406 ...
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... TDA7406 – Single-ended monaural output – control range 95dB (+15...-79dB) in 1dB steps with soft step. – separate mute ● Mute functions – direct mute – digitally controlled Soft mute with 4 programmable mute-time 3.2 Audioprocessor electrical characteristics Table 4. Audioprocessor electrical characteristics (V =9V; T =25° ...
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... A E Tracking Error Steps DC 12/64 =10kΩ; all gains=0dB; f=1kHz; unless otherwise specified) L Test Condition Main / Mix-Source -20 to +20dB G = -80 to -20dB Adjacent Attenuation Steps From 0dB to G MIN TDA7406 Min. Typ. Max. Unit -6/- -83 -79 -75 dB 0.5 1 1.5 dB 0.5 1 1.5 dB -21 -19 -17 ...
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... TDA7406 Table 4. Audioprocessor electrical characteristics (continued) (V =9V; T =25° amb Symbol Parameter SOFT MUTE A Mute Attenuation MUTE T Delay Time D V Low Threshold for SM-Pin TH low V High Threshold for SM - Pin TH high R Internal pull-up resistor PU V Internal pull-up Voltage PU EQUALIZER CONTROL C Control Range ...
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... L Test Condition Window 1 Window 2 Window 3 Adjacent Attenuation Steps Signal/Mix In Thd=0.3% TDA7406 Min. Typ. Max. Unit 356 396 436 Hz 0.9 1 1.1 kHz 2.26 2.51 2.76 kHz 5.70 6.34 6.98 kHz 14.4 16 17.6 kHz 1 ...
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... TDA7406 Table 4. Audioprocessor electrical characteristics (continued) (V =9V; T =25° amb Symbol Parameter HIGH PASS f Highpass corner frequency HP SUBWOOFER ATTENUATOR R Input Impedance in G Max. Gain MAX A Max. Attenuation ATTN A Step Resolution STEP A Output Mute Attenuation MUTE E Attenuation Set Error Steps DC SUBWOOFER Lowpass ...
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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. 4.1.4 Beep Generator There are four possible selectable beeping frequencies: 600Hz, 780Hz, 1.56KHz and 2.4KHz. 16/64 Figure 3. TDA7406 ...
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... TDA7406 Figure 3. Input-stages 4.2 AutoZero The AutoZero allows a reduction of the number of pins as well as external components by canceling any offset generated by or before the In-Gain-stage (Please notice that externally generated offsets, e.g. generated through the leakage current of the coupling capacitors, are not canceled). ...
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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 TDA7406 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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... TDA7406 Figure 4. Loudness Attenuation @ f 0.0 -5.0 -10.0 dB -15.0 -20.0 -25.0 10.0 Figure 5. Loudness Center frequencies @ Attn. = 15dB 0.0 -5.0 dB -10.0 -15.0 -20.0 10.0 Figure 6. 1st and 2nd Order Loudness @ Attn. = 15dB, fP=400Hz 0.0 -5.0 dB -10.0 -15.0 -20.0 10.0 Description of the audioprocessor part = 400Hz ...
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... The blend-time from one step to the next is programmable with four different values: 320μs, 1.28ms, 5.12ms and 20.4ms. 20/64 2 C-bus output register (Bit0 = SM read bit) is set to 1 from the start TDA7406 2 C-bus. This slope is realized Figure 7). ...
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... TDA7406 Figure 8. SoftStep-Timing for Volume 1dB 0.5dB -0.5dB -1dB Note: For steps more than 0.5dB (Volume) or 1dB (Speaker) the SoftStep mode should be deactivated because it could generate a hard 1dB step during blending. 4.6 The Seven Band Equalizer 4.6.1 Equalizer Filter Each filter is realized as a switched capacitor with a 2nd order frequency response. ...
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... Description of the audioprocessor part Figure 9. Equalizer filter control @ -10 -15 Figure 10. Center frequencies @ Gain = 15dB 1 Figure 11. Quality factors @ boost = 15dB 22/64 Center 100 20 100 100 = 1kHz 1.0 10k 20k 20k = 1kHz Center Hz 1k TDA7406 20k ...
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... TDA7406 Figure 12. Superposition of all EQ bands @ boost = 15dB 4.6.2 DC-Mode The filter stage 1 (62/100Hz) has a programmable +4dB DC-gain when the boost is set at +15dB (See Figure Figure 13. 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 ...
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... Hz 15). . Each analog output data is valid after the time out Figure 16 illustrates the read cycle timing of the spectrum 1.0K 10.0K pin. To allow easy interfacing to a out remains high for the time t clk to be held at high potential. Figure 15 clk TDA7406 . intres ...
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... TDA7406 Figure 15. Spectrum analyzer block diagram Figure 16. Timing spectrum analyzer 4.9 AC-coupling In some applications additional signal manipulations are desired. For this purpose an AC- coupling is placed before the speaker-attenuators, which can be activated or internally shorted by I²C-Bus. In short condition the input-signal of the speaker-attenuator is available at the AC-outputs. The input-impedance of this AC-inputs is 50kΩ ...
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... Navi pin. 0 During this mode the input resistance of 100kΩ is disconnected from the pin. The internal signals available are shown in the Data-byte specification. 26/64 Inputs In of the subaddress byte and 2 TDA7406 ...
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... TDA7406 5 Stereodecoder part 5.1 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 ● ...
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... V LEVEL HCH V >> V LEVEL HCH V >> V LEVEL HCH V << V LEVEL HCL 4 2.1 40 TDA7406 = 27°C, unless amb Typ. Max. Unit % 50 75 µs 62.5 80 µs 75 100 µs 100 130 µs 3 37.5 µs 47 µs 56 µs 75 µs 3 ...
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... TDA7406 Table 5. Stereodecoder electrical characteristics (continued 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz S deviation), modulation frequency = 1kHz, input gain = 6dB, T otherwise specified. Symbol Parameter Intermodulation (Note 1) α2 f =10kHz, f =1kHz mod spur α3 f =13kHz, f =1kHz mod spur Traffic Radio (Note 2) α ...
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... Stereodecoder part 5.3 Dual MPX Usage 0.0.1 Feature Description The TDA7406 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 19 are implemented (Please note that the thresholds have a hysteresis of 500mV) ...
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... TDA7406 6 Noise blanker part 6.1 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 ● ...
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... The repetition rate must not TDA7406 Unit µs µs µs µs ms µs ms µs V/ms mV/µs V/ms kΩ kHz kHz ...
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... TDA7406 Figure 20. Trigger Threshold vs. V 65m 30m V Figure 21. Deviation Controlled Trigger Adjustment Figure 22. Fieldstrength Controlled Trigger Adjustment ≈ PEAK IN 0. 2.8 2.0 1 (11) n oisy Noise blanker part 260m V (00) 220m V (01) 180m 140m ISE LLE D T RIG . 1. etector off (11) ...
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... Bandpass Gain BPMP G RECTM Rectifier Gain P I Rectifier Charge Current CHMP I Rectifier Discharge Current DISMP Quality Detector A Multipath Influence Factor 34/64 Test Conditions stereodecoder locked on Pilot tone TDA7406 Min. Typ. Max. Unit 19 kHz 7 0.25 µA 0 0.70 0.85 1.00 1.15 ...
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... IF-devices. 8.1 Stereodecoder-Mute The TDA7406 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 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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... TDA7406 offers an I compensate the lowpass behavior of the tuner section. If the tuner's attenuation at 38kHz range from 7.2% to 31.0% the TDA7406 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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... V available. The detector output (signal STEREO, see Block diagram) can be checked by reading the status byte of the TDA7406 via I into “Hold”-mode which freezes the PLL's state (bit D Softmute the PLL will again follow the input signal only by correcting the phase error. ...
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... The highcut control set-up is similar to the stereoblend control set-up: the starting point VHCH can be set with 2 bits to be 42, 50 66% of REF5V whereas the range can be set to be 17, 22 33% of VHCH (see 38/64 Figure 27). At the point of full channel separation the 70 20 Figure 28). TDA7406 ...
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... TDA7406 Figure 28. Highcut characteristics Functional Description of Stereodecoder 39/64 ...
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... The sensitivity in this operation is high. If the MPX signal is noisy (low fieldstrength) 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 gain is programmable in 4 steps (see 40/64 TDA7406 Figure 29. Figure 22). ...
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... The slewrate is measured with R 9.3.4 AM mode of the Noiseblanker The TDA7406 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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... Highcut through the multipath detector Selecting the “internal influence” in the configuration byte the Stereo-Blend and/or the Highcut is automatically invoked during a multipath condition according to the voltage appearing at the MP_OUT-pin. Figure 30. Block diagram of the Multipath-Detector 42/64 TDA7406 ...
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... TDA7406 11 Quality detector The TDA7406 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 (see noiseblanker description). The factor 'a' can by programmed from 0.7 to 1.15. The output is a low impedance output able to drive external circuitry as well as simply fed to an AD-converter for RDS applications ...
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... During the Testmode, which can be activated by setting bit I2 of the subaddress byte and bit D1 of the stereodecoder testing-byte, several internal signals are available at the FD2R+ pin. During this mode the input resistance of 100kOhm is disconnected from the pin. The internal signals available are shown in the Data-byte specification 44/64 TDA7406 ...
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... TDA7406 bus interface 13.1 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 Start R/W = “ ...
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... TDA7406 FUNCTION Audioprocessor Testmode off on AutoZero Remain off on Auto-Increment Mode off on Subaddress Source Selector Loudness Volume EQ Filter 1 (62/100Hz) EQ Filter 2 (157Hz) EQ Filter 3 (396Hz) EQ Filter 4 (1kHz) EQ Filter 5 (2.51kHz) EQ Filter 6 (4/6.34kHz) EQ Filter 7 (15/16kHz) Mixing Programming SoftMute Subwoofer / Spectrum analyzer / HighPass Configuration Audioprocessor I Configuration Audioprocessor II ...
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... TDA7406 13.3 Data byte specification The status after Power-On-Reset is marked bold-face / underlined in the programming tables. Table 9. Input Selector (0) MSB Table 10. Loudness (1) MSB LSB Source Selector CDC/ Tape Phone Navi Tuner TIM Input Gain 0 0 0dB 0 1 1dB : : : 1 0 14dB 1 1 15dB ...
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... LSB 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 TDA7406 ATTENUATION FUNCTION ...
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... TDA7406 Table 13. Mixing Programming (10) MSB Table 14. SoftMute (11) MSB LSB Mixing 0 Mute 1 enable Mixing Source 0 0 Beep 0 1 Phone 1 0 Navi 1 1 Tuner / TIM Mixing Target 0 Speaker LF off 1 Speaker Speaker RF off 1 Speaker RF on Speaker LR off Speaker LR on Speaker RR off Speaker RR on must be “1” ...
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... Filter off Filter on High Pass Cut-Off-Frequency 90Hz 135Hz 180Hz 215Hz LSB CDC Input Mode 0 single ended 1 pseudo differential CDC Input Gain SoftStep Volume 0 off 1 on SoftStep Time 0 0 320µ 1.28ms 1 0 5.12ms 1 1 20.4ms TDA7406 FUNCTION pin In pins InR pin In FUNCTION ...
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... TDA7406 Table 16. Configuration Audioprocessor I (13) (continued) MSB Table 17. Configuration Audioprocessor II (14) MSB LSB Loudness flat filter ON Mixing Selector Tuner/TIM Switch TIM Tuner Tuner Selection AM Stereodecoder LSB Pause Detector 0 off 1 on Pause ZC Window 0 0 160mV 0 1 80mV 1 0 40mV 1 1 not allowed ...
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... Speaker and Subwoofer Level Control (15,16,17,18,19) MSB Table 19. Mixer Level Control (20) MSB 52/64 LSB Gain/Attenuation +15dB : : : : : : 1dB 1dB : : : : : : -16dB : : : : : : -32dB : : : : : : -48dB : : : : : : -64dB : : : : : -79dB Mute SoftStep On/Off On Off LSB Gain/Attenuation +15dB : : : : : : 1dB 1dB : : : : : : -15dB -16dB : : : : : : -78dB -79dB Mute ATTENUATION 0dB 0dB ATTENUATION 0dB 0dB TDA7406 ...
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... TDA7406 Table 20. Testing Audioprocessor (21) MSB Note: This byte is used for testing or evaluation purposes only and must not set to other values than “11111110” in the application! Table 21. Stereodecoder (22) MSB LSB Audioprocessor Testmode 0 off 1 on Test-Multiplexer Spectrum Analyzer Filter Spectrum Analyzer Filter Spectrum Analyzer Filter ...
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... Low Threshold 30mV 0 Noise Controlled Threshold 320mV 1 Noise Controlled Threshold 260mV 0 Noise Controlled Threshold 200mV 1 Noise Controlled Threshold 140mV Over deviation Adjust 2.8V Over deviation Adjust 2.0V Over deviation Adjust 1.2V Over deviation Detector OFF TDA7406 FUNCTION (1) (37.5µs ) (1) ) (1) (56.3µs ) (1) ) FUNCTION ...
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... TDA7406 Table 23. Noiseblanker II (24) MSB Table 24 FM-Noiseblanker (25) MSB LSB PEAK charge current 0 low 1 high Fieldstrength adjust OFF Blank Time 38µs / 1.2ms 0 1 25.5µs / 800µ 32µ 22µs / 640µs Noise Rectifier Discharge Resistor R = infinite Strong Multipath influence on PEAK 18k ...
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... I2C bus interface Table 25. High-Cut (26) MSB 56/64 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 0 1 50% REF5V 1 0 58% REF5V 1 1 66% REF5V VHCL 16.7% VHCH 22.2% VHCH 27.8% VHCH 33.3% VHCH De-emphasis Shift On Off TDA7406 FUNCTION ...
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... TDA7406 Table 26. Fieldstrength Control (27) MSB Table 27. Multipath Detector (28) MSB LSB VSBL 20.0% REF5V 23.3% REF5V 26.6% REF5V 30.0% REF5V 33.3% REF5V 36.6% REF5V 40.0% REF5V 43.3% REF5V 46.6% REF5V 50.0% REF5V 53.3% REF5V 56.6% REF5V 60.0% REF5V 63.3% REF5V 66.6% REF5V ...
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... 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 0 0dB 0 1 0.4dB 1 0 0.8dB : : : 1 1 6dB TDA7406 FUNCTION FUNCTION ...
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... TDA7406 Table 29. Stereodecoder Configuration (30) MSB Using the Multipath Time-Constants for Stereo-Bland and High-Cut Table 30. Testing Stereodecoder(31) MSB LSB Multipath Influence on High-Cut Off Multipath Influence on Stereo-Blend Off Level-Input over Multipath-Detector Off Dual MPX Mode Off 1 must be “1” LSB I2C bus interface ...
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... I2C bus interface Table 30. Testing Stereodecoder(31) (continued) 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! 60/64 LSB TDA7406 FUNCTION Audioprocessor Oscillator Off On must be “1” ...
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... TDA7406 14 Application diagram Figure 31. Application Diagram Application diagram 61/64 ...
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... TQFP4410 TDA7406 OUTLINE AND MECHANICAL DATA TQFP44 ( 1.4mm 0.10mm .004 Seating Plane C K 0076922 D ® ...
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... TDA7406 16 Revision history Table 31. Document revision history Date 04-Sep-2006 Revision 1 Initial release. Revision history Changes 63/64 ...
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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 64/64 Please Read Carefully: © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TDA7406 ...