TDA7400DTR STMicroelectronics, TDA7400DTR Datasheet
TDA7400DTR
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TDA7400DTR Summary of contents
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FULLY INTEGRATED SIGNAL PROCESSOR OPTIMIZED FOR CAR RADIO APPLICA- TIONS FULLY PROGRAMMABLE BY I INCLUDES AUDIOPROCESSOR, STEREO - DECODER WITH NOISE BLANKER AND MULTIPATH DETECTOR PROGRAMMABLE ROLL-OFF COMPENSA- TION NO EXTERNAL COMPONENTS DESCRIPTION The TDA7400D is the newcomer of ...
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TDA7400D ABSOLUTE MAXIMUM RATINGS Symbol V Operating Supply Voltage S T Operating Ambient Temperature Range amb T Operating Storage Temperature Range stg SUPPLY Symbol Parameter V Supply Voltage S I Supply Current S SVRR Ripple Rejection @ 1KHz ESD All ...
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PIN DESCRIPTION N. Name 1 VREF Reference Voltage Output 2 CREF Reference Capacitor Pin 3 TAPEL Tape Input Left 4 TAPER Tape Input Right 5 CDR CD Right Channel Input 6 CDGND CD Input Common Ground 7 CDL CD Input ...
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TDA7400D AUDIO PROCESSOR PART Input Multiplexer Quasi-differential CD and cassette stereo input AM mono input Phone differential input Multiplexer signal after In-Gain available at separate pins Volume control 1dB attenuator Max. gain 15dB Max. attenuation 79dB Bass Control 2nd order ...
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ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter VOLUME CONTROL G Max Gain MAX 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 ...
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TDA7400D ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter SPEAKER ATTENUATORS R Input Impedance IN G Max Gain MAX A Max Attenuation MAX A Step Resolution STEP A Output Mute Attenuation MUTE E Attenuation Set Error Steps DC AUDIO OUTPUTS ...
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Stereodecoder Part ELECTRICAL CHARACTERISTICS ( 500mV(75KHz deviation), fm= 1KHz 6dB, T MPX Symbol Parameter V MPX Input Level in R Input Resistance in G Min. Input Gain MIN G Max. Input Gain MAX G Step Resolution ...
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TDA7400D ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Carrier and harmonic suppression at the output 19 Pilot Signal f = 19KHz 38 Subcarrier f = 38KHz 57 Subcarrier f = 57KHz Subcarrier f = 76KHz Intermodulation (Note 10KHz, ...
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NOISE BLANKER PART internal 2nd order 140kHz high pass filter programmable trigger threshold trigger threshold dependent on high frequency noise with programmable gain additional circuits for deviation and field- strength dependent trigger adjustment ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter 0) 1) ...
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TDA7400D ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter V Noise Rectifier adjustment ADJMP 8) through Multipath 0) All Thresholds are measured using a pulse with T 1) NBT represents the Noiseblanker Byte bits D 2) NAT represents the Noiseblanker Byte bit pair ...
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Figure 3. Fieldstrength Controlled Trigger Adjustment V PEAK »3V Multipath Detector Internal 19kHz band pass filter Programmable band pass and rectifier gain ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter f Center Frequency of Multipath- CMP Bandpass G Bandpass Gain BPMP G Rectifier ...
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TDA7400D DESCRIPTION OF THE AUDIOPROCESSOR PART Input Multiplexer CD quasi differential Cassette stereo Phone differential AM mono Stereodecoder input. Input stages Most of the input stages have remained the same as in preceeding ST audioprocessors with excep- tion of the ...
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Figure 5. Softmute Timing 1 EXT. MUTE +SIGNAL REF -SIGNAL BUS OUT D97AU634 Note: Please notice that a started Mute action is always terminated and could not be interrupted by a change of the mute signal. ...
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TDA7400D Figure 8. Bass Quality factors @ Gain = 14dB 80Hz 15.0 12.5 10.0 7.5 5.0 2.5 0.0 10.0 100.0 1.0K Figure 10. Treble Control @ fc = 17.5KHz 15.0 10.0 5.0 0.0 -5.0 -10.0 -15.0 10.0 100.0 ...
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FUNCTIONAL DESCRIPTION OF STEREODE- CODER The stereodecoder part of the TDA7400D (see Fig. 12) contains all functions necessary to de- modulate the MPX signal like pilot tone depend- ent MONO/STEREO switching as well as "stereoblend" and "highcut" functions. Stereodecoder Mute ...
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TDA7400D Figure 13. Signals During Stereodecoder’s Softmute SOFTMUTE COMMAND STD MUTE V O off adjustment which is able to compensate the lowpass behaviour of the tuner section. If the tuner attenuation at 38kHz range from 13.8% to ...
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Figure 15. Relation Between Internal and External LEVEL Voltage and Setup of Stereoblend INTERNAL SETUP OF VST VOLTAGES REF 5V VSBL VMO VST Figure 16. Highcut Characteristics LOWPASS TIME CONSTANT 3 Deemp Deemp VHCL D97AU640 nal LEVEL voltage (LEVEL INTERN) ...
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TDA7400D supplied by his own biasing circuit. Trigger Path The incoming MPX signal is highpass filtered, amplified and rectified. This second order high- pass-filter has a corner frequency of 140kHz. The rectified signal, RECT, is lowpass filtered to generate a ...
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Figure 18. Block Diagram of the Multipath Detector LEVEL BANDPASS MP_IN 19KHz GAIN 2 BITS By rectifying the MPX signal a further signal rep- resenting the actual deviation is obtained used to increase the PEAK voltage. Offset and ...
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TDA7400D BUS INTERFACE DESCRIPTION Interface Protocol The interface protocol comprises: -a start condition (S) -a chip address byte (the LSB bit determines read CHIP ADDRESS MSB LSB R/W ACK ...
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DATA BYTE SPECIFICATION Input Selector (subaddress 0H) MSB Volume and Speaker Attenuation (subaddress 1H, 4H, 5H, 6H, 7H) MSB D7 ...
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TDA7400D Treble Filter (subaddress 2H) MSB Bass Filter (subaddress 3H) MSB ...
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Soft Mute and Bass Programming (subaddress 8H) MSB Only for Bass Q- Factor = 2.0 Stereodecoder (subaddress ...
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TDA7400D Noiseblanker (subaddress AH) MSB High Cut (subaddress BH) MSB ...
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Fieldstrength Control (subaddress CH) MSB Configuration (subaddress DH) MSB ...
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TDA7400D Stereodecoder Adjustment (subaddress EH) MSB Testing (subaddress FH) MSB ...
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DIM. MIN. TYP. MAX. MIN. A 2.65 a1 0.1 0.3 0.004 b 0.35 0.49 0.014 b1 0.23 0.32 0.009 C 0 (typ.) D 17.7 18.1 0.697 E 10 10.65 0.394 e 1.27 e3 16.51 F 7.4 7.6 ...
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... STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. ...