TDA7718NTR STMicroelectronics, TDA7718NTR Datasheet

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... The device includes a high performance audioprocessor with fully integrated audio filters and new Soft Step architecture. The digital control allows programming in a wide range of filter characteristics. Table 1. Device summary Order code TDA7718N TDA7718NTR Doc ID 16502 Rev 1 TDA7718N TSSOP28 Package Packing TSSOP28 Tube TSSOP28 ...

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Contents Contents 1 Block circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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TDA7718N 4.7.1 4.7.2 4.8 Subwoofer filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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TDA7718N List of figures Figure 1. Block circuit diagram ...

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Block circuit diagram 1 Block circuit diagram Figure 1. Block circuit diagram 6/40 MULTIPLEXER INPUT MAIN Doc ID 16502 Rev 1 TDA7718N ...

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TDA7718N 2 Pin connection and pin description 2.1 Pin connection Figure 2. Pin connection (top view) FD1L+/QD2L/SE4L FD1L-/QD2G/SE4R FD1R-/QD2G/SE5L FD1R+/QD2R/SE5R 2.2 Pin description Table 2. Pin description No. Pin name 1 SE1L Single-end input left 2 SE1R Single-end input right ...

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Pin connection and pin description Table 2. Pin description (continued) No. Pin name 11 FD1L-/QD2G/SE4R Full differential - input left or quasi-differential ground or single-end input right 12 FD1R-/QD2G/SE5L Full differential - input right or quasi-differential ground or single-end input ...

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TDA7718N 3 Electrical specifications 3.1 Thermal data Table 3. Thermal data Symbol R th-j amb 3.2 Absolute maximum ratings Table 4. Absolute maximum ratings Symbol in_max T amb T stg 3.3 Electrical characteristics V = 8.5 V; ...

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Electrical specifications Table 5. Electrical characteristics (continued) Symbol Parameter Loudness control A Max attenuation MAX A Step resolution STEP f Peak frequency Peak Volume control G Max gain MAX A Max attenuation MAX A Step resolution STEP E Attenuation set ...

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TDA7718N Table 5. Electrical characteristics (continued) Symbol Parameter Middle control C Control range RANGE A Step resolution STEP f Center frequency c Q Quality factor MIDDLE Treble control C Clipping level RANGE A Step resolution STEP f Center frequency c ...

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Electrical specifications Table 5. Electrical characteristics (continued) Symbol Parameter DC offset detection circuit V Zero comp. window size th t Max rejected spike length sp I DCErr charge current CHDCErr I DCErr discharge current DISDCErr V DCErr high voltage OutH ...

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TDA7718N 4 Description of the audioprocessor 4.1 Input stages One quasi-differential stereo input, one full-differential stereo input and maximum five single-ended inputs are available. 4.1.1 Quasi-differential stereo input (QD1) The QD input is implemented as a buffered quasi-differential stereo stage ...

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Description of the audioprocessor Figure block diagram 14/40 Doc ID 16502 Rev 1 TDA7718N ...

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TDA7718N 4.2 Loudness There are four parameters programmable in the loudness stage. 4.2.1 Loudness attenuation Figure 4 shows the attenuation as a function of frequency at f Figure 4. Loudness attenuation @ f 4.2.2 Peak frequency Figure 5 shows the ...

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Description of the audioprocessor 4.2.3 High frequency boost Figure 6 shows the different Loudness shapes in low and high frequency boost. Figure 6. Loudness attenuation, f 4.2.4 Flat mode In flat mode the loudness stage works ...

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TDA7718N 4.3 SoftMute The digitally controlled SoftMute stage allows muting/demuting the signal with a I programmable slope. The mute process can either be activated by the SoftMute pin the I C bus. This slope is realized in ...

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Description of the audioprocessor 4.5 Bass There are four parameters programmable in the bass stage: 4.5.1 Bass attenuation Figure 8 shows the attenuation as a function of frequency at a center frequency of 80 Hz. Figure 8. Bass control @ ...

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TDA7718N 4.5.3 Quality factors Figure 10 shows the four possible quality factors 1, 1.25, 1.5 and 2. Figure 10. Bass quality factors @ gain = 14 dB, f 4.5.4 DC mode In this mode the DC-gain is increased by 4.4 ...

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Description of the audioprocessor 4.6 Middle There are three parameters programmable in the middle stage: 4.6.1 Middle attenuation Figure 12 shows the attenuation as a function of frequency at a center frequency of 1 kHz. Figure 12. Middle control @ ...

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TDA7718N 4.6.3 Quality factors Figure 14 shows the three possible quality factors 0.75, 1 and 1.25. Figure 14. Middle quality factors @ gain = 14 dB, f 4.7 Treble There are two parameters programmable in the treble stage: 4.7.1 Treble ...

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Description of the audioprocessor 4.7.2 Center frequency Figure 16 shows the four possible center frequencies and 17.5 kHz. Figure 16. Treble center frequencies @ gain = 14 dB 4.8 Subwoofer filter The subwoofer lowpass ...

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TDA7718N 4.9 Softstep control In this device, the softstep function is available for volume, speaker, loudness, treble, middle and bass block. With softstep function, the audible noise of DC offset or the sudden change of signal can be avoided when ...

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Description of the audioprocessor After power-on, the external attached capacitor is rapidly charged (fast-charge) to overcome a false indication. Figure 18. DC offset detection circuit (simplified) 24/40 Doc ID 16502 Rev 1 TDA7718N ...

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TDA7718N 4.11 Audioprocessor testing In the test mode, which can be activated by setting bit D7 of the the testing audioprocessor byte, several internal signals are available at the SE1L pin. In this mode, the input resistance ...

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I C bus specification bus specification 5.1 Interface protocol The interface protocol comprises: ● a start condition (S) ● a chip address byte (the LSB determines read/write transmission) ● a subaddress byte ● a sequence ...

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TDA7718N 2 Figure 21 bus data 5.2.1 Receive mode R Start R/W = "0" -> Receive Mode (Chip can be programmed by µP) "1" -> Transmission Mode (Data ...

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I C bus specification Table 7. Subaddress (receive mode) MSB ...

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TDA7718N 5.3 Data byte specification Table 8. Main selector (0) MSB Not used (1-3) ...

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I C bus specification Table 9. Soft mute / others (4) MSB ...

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TDA7718N Table 10. SoftStep I (5) MSB ...

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I C bus specification Table 11. SoftStep detector (6) MSB ...

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TDA7718N Table 12. Loudness (7) MSB Table 13. Volume / output gain ...

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I C bus specification Table 14. Treble filter (9) MSB ...

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TDA7718N Table 16. Bass filter (11) MSB Table ...

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I C bus specification Table 18. Speaker attenuation (FL/FR/RL/RR/SWL/SWR) (13-18) MSB ...

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TDA7718N Table 20. Testing audio processor 2 (20) MSB ...

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Package information 6 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...

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TDA7718N 7 Revision history Table 22. Document revision history Date 21-Oct-2009 Revision 1 Initial release. Doc ID 16502 Rev 1 Revision history Changes 39/40 ...

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... 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. ...