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NXP Semiconductors TFA9812 manuel d'utilisation

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Tout d'abord, le manuel d’utilisation NXP Semiconductors TFA9812 devrait contenir:
- informations sur les caractéristiques techniques du dispositif NXP Semiconductors TFA9812
- nom du fabricant et année de fabrication NXP Semiconductors TFA9812
- instructions d'utilisation, de réglage et d’entretien de l'équipement NXP Semiconductors TFA9812
- signes de sécurité et attestations confirmant la conformité avec les normes pertinentes

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Habituellement, cela est dû au manque de temps et de certitude quant à la fonctionnalité spécifique de l'équipement acheté. Malheureusement, la connexion et le démarrage NXP Semiconductors TFA9812 ne suffisent pas. Le manuel d’utilisation contient un certain nombre de lignes directrices concernant les fonctionnalités spécifiques, la sécurité, les méthodes d'entretien (même les moyens qui doivent être utilisés), les défauts possibles NXP Semiconductors TFA9812 et les moyens de résoudre des problèmes communs lors de l'utilisation. Enfin, le manuel contient les coordonnées du service NXP Semiconductors en l'absence de l'efficacité des solutions proposées. Actuellement, les manuels d’utilisation sous la forme d'animations intéressantes et de vidéos pédagogiques qui sont meilleurs que la brochure, sont très populaires. Ce type de manuel permet à l'utilisateur de voir toute la vidéo d'instruction sans sauter les spécifications et les descriptions techniques compliquées NXP Semiconductors TFA9812, comme c’est le cas pour la version papier.

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Tout d'abord, il contient la réponse sur la structure, les possibilités du dispositif NXP Semiconductors TFA9812, l'utilisation de divers accessoires et une gamme d'informations pour profiter pleinement de toutes les fonctionnalités et commodités.

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Table des matières du manuel d’utilisation

  • Page 1

    1. General description The TF A9812 is a high-efficiency Bridge Tied Load (BTL) stereo Class-D audio amplifier with a digital I 2 S audio input. It is av ailable in a HVQFN48 pac kage with e xposed die paddle. The e xposed die paddle technology enhances the thermal and electr ical perf or mances of the de vice. The TF A9812 f eatures digital soun[...]

  • Page 2

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 2 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input n No high system clock required (PLL is ab le to lock on BCK) n No e xter nal heat sink required n 5 V tolerant digital inputs n Suppor ts dual coil inductor[...]

  • Page 3

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 3 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 4. Quic k reference data [1] I P is the current through the analog supply voltage (V DD A ) pin added to the current through the power supply voltage (V DDP [...]

  • Page 4

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 4 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 5. Or dering information T able 2. Ordering inf ormation T ype number Pa cka g e Name Description V ersion TF A9812HN HVQFN48 plastic ther mal enhanced very [...]

  • Page 5

    xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxx[...]

  • Page 6

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 6 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input Figure 1 shows the b lock diagr am of the TF A9812. For a detailed description of the audio signal path see Section 8.1 . 7. Pinning inf ormation 7.1 Pinning[...]

  • Page 7

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 7 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 14 OUT2N O Negative PWM output channel 2 15 BOOT1P O Bootstrap high-side driver positiv e PWM output channel 1 16 OUT1P O P ositive PWM output channel 1 17 O[...]

  • Page 8

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 8 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 8. Functional description 8.1 General The TF A9812 is a high-efficiency stereo BTL Class-D amplifier with a digital I 2 S audio input. It suppor ts all com[...]

  • Page 9

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 9 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input The bloc k control defines the operational control settings of the TF A9812 in line with the actual I 2 C settings and the pin-controlled settings. The PLL [...]

  • Page 10

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 10 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input • In Soft mute mode the I 2 S input signal is o verruled with a soft mute . – In Legacy control mode the analog input pin A V OL controls Soft mute mode[...]

  • Page 11

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 11 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] Under these conditions the mode is enabled by the appropriate I 2 C setting. In I 2 S slav e mode selection between BCK and MCLK cloc k modes is automat[...]

  • Page 12

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 12 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] The valid sample frequencies are shown in Section 9.5.7 . Legacy 32 8.192 12.288 18.432 (576 f s ) 44.1 11.2896 16.9344 25.4016 (576 f s ) 48 12.288 18.[...]

  • Page 13

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 13 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 8.3 P ower -up/power -down 8.3.1 P ower -up Figure 3 and T able 10 describe the power-up timing while T able 11 sho ws the pin control f or initiating a pow[...]

  • Page 14

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 14 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input In I 2 C control mode communication is enab led after 4 ms. The pref erred I 2 C settings can be made within 66 ms bef ore the PLL star ts r unning. Finally[...]

  • Page 15

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 15 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input Remark: Only MSB-first f or mats are suppor ted. 48 f s LSB-justified 16-bit data yes no 48 f s LSB-justified 18-bit data yes no 48 f s LSB-justified 20[...]

  • Page 16

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 16 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input In I 2 C control mode the f ollowing sample frequency f s can be used: 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kH[...]

  • Page 17

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 17 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input In the abov e equation f c is the center frequency and f s is the sample frequency . The definition of the quality f actor is the center frequency divided [...]

  • Page 18

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 18 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input (5) The ranges of the TF A9812 parametric equalizer settings f or each band are: • The Gain, G is from − 30 dB to +12 dB. • The center frequency , f c[...]

  • Page 19

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 19 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input (7) (8) In Equation 8 , M is the unsigned mantissa and E the negative signed e xponent. F or e xample, in word2 bits [14:8] = [0111 010] represent k 2 &apos[...]

  • Page 20

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 20 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 8.5.2 Digital v olume control In I 2 C control mode both audio channels hav e separate digital v olume control. In Legacy control mode the v olume control o[...]

  • Page 21

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 21 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input Section 9 shows the I 2 C address locations f or the digital gain control f or both channels. In Legacy mode the pin A V OL (32) can be used to control the [...]

  • Page 22

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 22 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input The I 2 C controls f or selecting the +24 dB gain can be found in Section 9.5.6 . The GAIN pin has no function In I 2 C mode. The TF A9812 f eatures also sp[...]

  • Page 23

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 23 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input The selected PWM s witching frequency is 400 kHz by def ault and can be set to 350 kHz, 700 kHz and 750 kHz in I 2 C control mode. In Legacy mode 400 kHz is[...]

  • Page 24

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 24 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 8.7.1 Thermal foldbac k If the junction temperature of the TF A9812 e xceeds the programmab le Ther mal f oldback threshold temperature the gain of the ampl[...]

  • Page 25

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 25 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 8.7.6 Overdissipation pr otection When the output current of the power amplifiers e xceeds a current v alue of 3 A and the temperature is abov e 140 ° C ,[...]

  • Page 26

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 26 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 8.7.11 In valid BCK pr otection The BCK clock signal is v erified as being at one of the allowed relativ e frequencies: 32 f s , 48 f s or 64 f s . If it i[...]

  • Page 27

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 27 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] See, Section 9.5.10 . [2] Window Protection is only check ed at power-up . 9. I 2 C b us interface and register settings 9.1 I 2 C bus interface The TF [...]

  • Page 28

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 28 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.3 I 2 C write cyc le description T able 25 shows the cycle required f or wr iting data to the I 2 C registers of the TF A9812. The byte siz e is 8 bits. T[...]

  • Page 29

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 29 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9. The TF A9812 sends the first byte . This is the most significant byte of the register . 10. The microcontroller asser ts an ackno wledge. 11. The TF A9[...]

  • Page 30

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 30 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input Reser v ed registers or bits will be indicated by RSD . 0x11 0x7A40 R/W Section 9.5.5 Equalizer_C2 word_2 0x12 0x14A2 R/W Section 9.5.5 Equalizer_D2 word_1 [...]

  • Page 31

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 31 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.5.1 Interpolator settings and soft mute 9.5.2 V olume control T able 28. Register address 00h: miscellaneous I 2 C interpolator settings Bit 15 14 13 12 1[...]

  • Page 32

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 32 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.5.3 Digital input format 9.5.4 Equalizer configuration T able 31. Bit description of register 00h: miscellaneous I 2 C interpolator settings Bit Symbol D[...]

  • Page 33

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 33 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.5.5 Equalizer settings [1] Default settings are shown in T able 27 . The corresponding equalizer configuration is shown in T able 40 . [1] Default settin[...]

  • Page 34

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 34 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input Fig 9. Equalizer configuration and register location mapping Left in Left out 2 × 5 or 2 × 10 Right in Right out 2 × 5 or 2 × 10 A1 C1 B1 D1 D2 D3 D4 D[...]

  • Page 35

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 35 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.5.6 PWM signal control T able 40. Default configuration equalizer for f s = 44.1 kHz Band A1/B1 A2/B2 A3/B3 A4/B4 A5/B5 C1/D1 C2/D2 C3/D3 C4/D4 C5/D5 F r[...]

  • Page 36

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 36 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.5.7 Digital-in cloc k configuration 9.5.8 Thermal foldbac k control T able 43. Register 2Dh: digital-in cloc k configuration Bit 15 14 13 12 11 10 9 8 S[...]

  • Page 37

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 37 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 9.5.9 TF A9812 temperature 9.5.10 Miscellaneous status T able 46. Bit description of register 2Dh: digital-in cloc k configuration Bit Symbol Description 9[...]

  • Page 38

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 38 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] The diagnostic pin 30 DIAG is flagged when se veral protection mechanisms ha ve been activ e, see Section 8.7 . 9.6 Overview of functional contr ol in [...]

  • Page 39

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 39 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] 32 kHz, 44.1 kHz and 48 kHz suppor ted [2] Bypass. [3] Special Legacy mode implementation. [4] 10 % clip lev el. [5] 400 kHz. 10. Internal cir cuitr y C[...]

  • Page 40

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 40 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 4 ST ABA 41 ST ABD 5 REF A 6V DD A 7 TEST1 9 ST AB2 28 ST AB1 10/11 V SSP2 18/19 V DDP 26/27 V SSP1 12 BOO T2N 15 BOO T1P 22 BOO T2P 25 BOO T1N T able 52. I[...]

  • Page 41

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 41 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 13/14 OUT2N 16/17 OUT1P 20/21 OUT2P 23/24 OUT1N 29 DIA G 30 CDELA Y 31 PO WERUP 33 ENABLE 34 GAIN 35 CSEL 36 ADSEL2/PLIM2 37 ADSEL1/PLIM1 43 TEST2 T able 52[...]

  • Page 42

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 42 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 11. Limiting v alues 38 SCL/SFOR 39 SD A/MS 45 WS 46 BCK 47 MCLK T able 52. Internal circuitry …continued Pin Symbol Equivalent cir cuitry 010aaa473 V SS1[...]

  • Page 43

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 43 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] V ss = V SS1 = V SS2 = REF A = REFD 12. Thermal characteristics [1] Measured in a JEDEC high K-factor test board (standard EIA/JESD 51-7). [2] Measured [...]

  • Page 44

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 44 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 13. Characteristics 13.1 DC Characteristics T able 55. DC characteristics Unless specified otherwise, V DD A =V DDP = 12 V , V SSP1 = V SSP2 = 0 V , V DD A[...]

  • Page 45

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 45 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input V OH HIGH-le vel output voltage At I OH = − 0.4 mA V DDD(3V3) − 0.4 V - - V V OL LO W-le v el output voltage At I OL = 4 mA - - 400 mV C L load capacita[...]

  • Page 46

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 46 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] I P is the current through the analog supply voltage (V DD A ) pin added to the current through the power supply v oltage (V DDP ) pin. [2] Ther mal f o[...]

  • Page 47

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 47 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 13.2 A C characteristics T able 56. A C characteristics Unless specified otherwise, V DD A =V DDP = 12 V , V DD A(3V3) =V DDD(3V3) = 3.3 V , T amb =2 5 ° [...]

  • Page 48

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 48 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] R s is the series resistance of inductor of low-pass LC filter in the application. [2] Output power measured across the loudspeaker load. This is based[...]

  • Page 49

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 49 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input [1] C b is the total capacitance of one bus line in pF . The maximum capacitive load f or each bus line is 400 pF . [2] After this period, the first clock [...]

  • Page 50

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 50 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input δ max = Maximum duty f actor (0.96). The output power at 10 % THD can be estimated using Equation 11 : (11) Figure 11 and Figure 12 show the estimated outp[...]

  • Page 51

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 51 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input Remark: A 4.8 Ω speaker (6 Ω speaker with 20 % spread) in BTL configuration can be used up to a supply voltage of 17 V without running into current lim[...]

  • Page 52

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  • Page 53

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  • Page 54

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  • Page 55

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  • Page 56

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 56 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 14.5 Curves measured in typical application (1) f i = 6 kHz (2) f i = 1 kHz (3) f i = 100 Hz (1) f i = 6 kHz (2) f i = 1 kHz (3) f i = 100 Hz a. V P = 12 V [...]

  • Page 57

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 57 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input a. V P = 12 V ; R L = 2 × 6 Ω ; P o = 1 W b . V P = 12 V ; R L = 2 × 8 Ω ; P o = 1 W Fig 18. T otal harmonic distor tion-plus-noise as a function of f[...]

  • Page 58

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 58 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input V P = 12 V ; V ripple = 500 mV (RMS) reference to ground; No input signal (1) R L = 8 Ω (2) R L = 6 Ω V P = 15 V ; 20 kHz AES17 filter (1) R L = 2 × 8[...]

  • Page 59

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 59 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input (1) P ower limiter = 0 dB (2) P ower limiter = − 1.5 dB (3) P ower limiter = − 3 dB (4) P ower limiter = − 4.5 dB (1) P ower limiter = 0 dB (2) P ower[...]

  • Page 60

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 60 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input V P = 12 V ; f i = 1 kHz; P ower dissipation in junction only (1) R L = 2 × 6 Ω (2) R L = 2 × 8 Ω V P = 12 V ; f i = 1 kHz; η po = (2 × P o ) / (2 ?[...]

  • Page 61

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 61 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 15. P ac kage outline Fig 28. Pac kage outline SOT619-8 (HVQFN48) REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE IEC JEDEC JEITA SOT619-8 - - - M[...]

  • Page 62

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 62 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 16. Handling inf ormation It is advisable to abide b y the nor mal precautions appropriate to handling MOS devices .[...]

  • Page 63

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 63 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 17. Revision history T able 59. Revision history Document ID Release date Data sheet status Change notice Supersedes TF A9812_2 20090122 Preliminar y data s[...]

  • Page 64

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 64 of 66 NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 18. Legal inf ormation 18.1 Data sheet status [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ?[...]

  • Page 65

    TF A9812_2 © NXP B.V . 2009. All rights reser ved. Preliminary data sheet Rev . 02 — 22 January 2009 65 of 66 continued >> NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input 20. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 66

    NXP Semiconductors TF A9812 BTL stereo Class-D audio amplifier with I 2 S input © NXP B.V . 2009. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 22 January 2009 Document identifier: TFA9812_2 Please be aware that important not[...]