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NXP Semiconductors TFA9810 manual

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Table of contents for the manual

  • Page 1

    1. General description The TF A9810 is a two-channel po wer comparator f or high-efficiency class D audio amplifier systems. It contains tw o full-bridge Br idge-Tied Load (BTL) power stages , drive logic, protection control logic and full diff erential input compar ators. By using this po wer comparator a compact closed-loop self-oscillating dig[...]

  • Page 2

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 2 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 5. Or dering inf ormation P o(RMS) RMS output power R L = 8 Ω ; V P = 12 V ; THD = 10 %; T wo channel driven; no heat sink required. - 9.5 - W P o output power V P = 12 V ; R L = 8 Ω[...]

  • Page 3

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 3 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 6. Bloc k diagram Fig 1. Block dia gram 27 26 25 30 29 28 V DDP1 V SSP1 22 BOOT1P V DDP1 OUT1P V SSP1 BOOT1N OUT1N STAB1 BOOT2P STABI1 CONTROL LOGIC 23 24 19 DRIVER HIGH 20 21 V DDP2 V S[...]

  • Page 4

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 4 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 7. Pinning inf ormation 7.1 Pinning The SO32 package has f our cor ner leads. These leads (1, 16, 17, and 32) are internally connected to the die pad and must be connected to V SSA in th[...]

  • Page 5

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 5 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 8. Functional description 8.1 General The TF A9810 is a dual-s witching power comparator . It is the main building bloc k for a stereo high-efficiency Class D audio power amplifier sys[...]

  • Page 6

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 6 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W In SLEEP mode the TF A9810 is not biased and has a very low supply current. When the TF A9810 is set to OPERA TING mode the device is started via the star t-up sequence, which pro vides [...]

  • Page 7

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 7 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W • OverV oltage Protection (O VP) When the supply voltage applied to the TF A9810 e xceeds the maximum supply voltage threshold le v el the de vice will shut down. The device will resta[...]

  • Page 8

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 8 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 8.6 Start-up sequence 9. Internal cir cuitry Fig 3. Start-up sequence SLEEP START-UP OPERATING FAULT RESTART OPERATING SHUT-DOWN SLEEP FLOATING AUDIO PWM 010aaa018 AUDIO PWM FLOATING V P[...]

  • Page 9

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 9 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W Fig 5. Internal circuitry 0002 Fig 6. Internal circuitry 0003 Fig 7. Internal circuitry 0004 hvp V SSA 135 k Ω 135 k Ω 5.5 V 5.5 V V SSA1 V DDA1 2 3 010aaa025 22 V 4 5 010aaa026 110 [...]

  • Page 10

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 10 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W Fig 8. Internal circuitry 0005 Fig 9. Internal circuitry 0006 Fig 10. Internal circuitry 0007 3 k Ω V SSA 250 nA 7 V DDA1 010aaa028 8 V DDA1 DISCHARGE V SSA1 010aaa029 2 nA 200 nA 5 k[...]

  • Page 11

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 11 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W Fig 11. Internal circuitry 0008 Fig 12. Internal circuitry 0009 Fig 13. Internal circuitry 0010 Fig 14. Internal circuitry 0011 V DDA1 V SSA1 11 010aaa031 13 k Ω V SSA2 V DDA2 14 15 h[...]

  • Page 12

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 12 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W Fig 15. Internal circuitry 0012 Fig 16. Internal circuitry 0013 Fig 17. Internal circuitry 0014 Fig 18. Internal circuitry 0015 19 24 23.5 V 010aaa035 12 V OUT2N 20 010aaa036 V DDP2 21 [...]

  • Page 13

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 13 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W Fig 19. Internal circuitry 0016 Fig 20. Internal circuitry 0017 Fig 21. Internal circuitry 0018 Fig 22. Internal circuitry 0019 V DDP2 23 V SSP2 010aaa039 23.5 V 25 30 010aaa040 V DDP1 [...]

  • Page 14

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 14 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 10. Limiting v alues Fig 23. Internal circuitry 0020 Fig 24. Internal circuitry 0021 Fig 25. Internal circuitry 0022 V DDP1 28 V SSP1 010aaa043 12 V OUT1N 29 010aaa044 V SSD 100 mA 31 V[...]

  • Page 15

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 15 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 11. Thermal characteristics [1] Measured in a JEDEC high K-factor test board (standard EIA/JESD 51-7) in free air with natur al convection. [2] Strongly depends on where the measurement[...]

  • Page 16

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 16 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W [1] Current limiting concept: in ov ercurrent condition no interr uption of the audio signal in case of impedance drop. 12.2 Dynamic characteristics I I input current V I = 5 V - 1 20 ?[...]

  • Page 17

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 17 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W [1] High-side and low-side pow er switch hav e the same ser ies resistance. [2] Output power measured across the loudspeak er load. Output power is measured indirectly via R DSon . 12.3[...]

  • Page 18

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 18 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W [1] Minimum v alue determined by R5, R10, R17, R22 equalling +1 % and R7, R14, R18, R20 equalling − 1 %. 13. Quality specification In accordance with SNW -FQ-611-E, ‘if this type i[...]

  • Page 19

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 19 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 14.2 Output current limiting The peak output current is internally limited abov e a lev el of 3 A minimum. Dur ing normal operation the output current should not e xceed this threshold [...]

  • Page 20

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 20 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W • R L = load resistance [ Ω ]. • R DSon = drain-source on-state resistance [ Ω ]. • R s = series resistance [ Ω ]. Example: A 4 Ω speaker in BTL configuration can be used[...]

  • Page 21

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 21 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 14.6 Curves measured in a typical application Fig 29. Input configuration for single-ended input IN1P IN1N A UDIO DSP OUT1P OUT1N 010aaa022 + − V P = 12 V , V i = 100 mV (1) OUT1 (2)[...]

  • Page 22

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 22 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 14.7 T ypical application diagram TF A9810 The typical application diagram with the TF A9810 supplied from an asymmetrical supply is shown in Figure 33 . V P =1 2V ,R L =8 Ω ,P o =1W [...]

  • Page 23

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  • Page 24

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

  • Page 25

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 25 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 14.8 T ypical application: bill of materials 14.9 Snubber netw ork 15. T est information General Quality Specification f or General Applications, P ower management and RF P ow er . Doc[...]

  • Page 26

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 26 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 16. P acka g e outline Fig 35. P acka ge outline SO T287-1 (SO23) UNIT A max. A 1 A 2 A 3 b p cD (1) E (1) eH E LL p QZ y w v θ REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DAT[...]

  • Page 27

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 27 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 17. Revision history T able 15. Revision history Document ID Release date Data sheet status Change notice Supersedes TF A9810_3 20080220 Product data sheet - TF A9810_2 Modifications: [...]

  • Page 28

    TF A9810_3 © NXP B.V . 2008. All rights reser ved. Product data sheet Rev . 03 — 20 February 2008 28 of 29 NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W 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 ter m ‘shor t data sheet’ is exp[...]

  • Page 29

    NXP Semiconductors TF A9810 A udio amplifier 2 x 12 W © NXP B.V . 2008. 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: 20 February 2008 Document identifier: TFA9810_3 Please be aware that important notices concerning this docu[...]