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Philips TDA8950 manual

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Buen manual de instrucciones

Las leyes obligan al vendedor a entregarle al comprador, junto con el producto, el manual de instrucciones Philips TDA8950. La falta del manual o facilitar información incorrecta al consumidor constituyen una base de reclamación por no estar de acuerdo el producto con el contrato. Según la ley, está permitido adjuntar un manual de otra forma que no sea en papel, lo cual últimamente es bastante común y los fabricantes nos facilitan un manual gráfico, su versión electrónica Philips TDA8950 o vídeos de instrucciones para usuarios. La condición es que tenga una forma legible y entendible.

¿Qué es un manual de instrucciones?

El nombre proviene de la palabra latina “instructio”, es decir, ordenar. Por lo tanto, en un manual Philips TDA8950 se puede encontrar la descripción de las etapas de actuación. El propósito de un manual es enseñar, facilitar el encendido o el uso de un dispositivo o la realización de acciones concretas. Un manual de instrucciones también es una fuente de información acerca de un objeto o un servicio, es una pista.

Desafortunadamente pocos usuarios destinan su tiempo a leer manuales Philips TDA8950, sin embargo, un buen manual nos permite, no solo conocer una cantidad de funcionalidades adicionales del dispositivo comprado, sino también evitar la mayoría de fallos.

Entonces, ¿qué debe contener el manual de instrucciones perfecto?

Sobre todo, un manual de instrucciones Philips TDA8950 debe contener:
- información acerca de las especificaciones técnicas del dispositivo Philips TDA8950
- nombre de fabricante y año de fabricación del dispositivo Philips TDA8950
- condiciones de uso, configuración y mantenimiento del dispositivo Philips TDA8950
- marcas de seguridad y certificados que confirmen su concordancia con determinadas normativas

¿Por qué no leemos los manuales de instrucciones?

Normalmente es por la falta de tiempo y seguridad acerca de las funcionalidades determinadas de los dispositivos comprados. Desafortunadamente la conexión y el encendido de Philips TDA8950 no es suficiente. El manual de instrucciones siempre contiene una serie de indicaciones acerca de determinadas funcionalidades, normas de seguridad, consejos de mantenimiento (incluso qué productos usar), fallos eventuales de Philips TDA8950 y maneras de solucionar los problemas que puedan ocurrir durante su uso. Al final, en un manual se pueden encontrar los detalles de servicio técnico Philips en caso de que las soluciones propuestas no hayan funcionado. Actualmente gozan de éxito manuales de instrucciones en forma de animaciones interesantes o vídeo manuales que llegan al usuario mucho mejor que en forma de un folleto. Este tipo de manual ayuda a que el usuario vea el vídeo entero sin saltarse las especificaciones y las descripciones técnicas complicadas de Philips TDA8950, como se suele hacer teniendo una versión en papel.

¿Por qué vale la pena leer los manuales de instrucciones?

Sobre todo es en ellos donde encontraremos las respuestas acerca de la construcción, las posibilidades del dispositivo Philips TDA8950, el uso de determinados accesorios y una serie de informaciones que permiten aprovechar completamente sus funciones y comodidades.

Tras una compra exitosa de un equipo o un dispositivo, vale la pena dedicar un momento para familiarizarse con cada parte del manual Philips TDA8950. Actualmente se preparan y traducen con dedicación, para que no solo sean comprensibles para los usuarios, sino que también cumplan su función básica de información y ayuda.

Índice de manuales de instrucciones

  • Página 1

    1. General description The TD A8950 is a high efficiency class-D audio power amplifier . The typical output power is 2 × 150 W with a speaker load impedance of 4 Ω . The TD A8950 is av ailable in the HSOP24 po wer pac kage and DBS23P power pac kage. The amplifier operates ov er a wide supply v oltage range from ± 12.5 V to ± 40 V and consum[...]

  • Página 2

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 2 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 4. Quic k reference data 5. Or dering information T able 1. Quick ref erence data Symbol P arameter Conditions Min Ty p Max Unit General, V P = ± 35 V V P supply voltage ± [...]

  • Página 3

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 3 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 6. Bloc k diagram The pin numbers in parenthesis ref er to type number TD A8950J. Fig 1. Block dia gram 001aah653 OUT1 V SSP1 V DDP2 DRIVER HIGH OUT2 BOOT2 TDA8950TH (TDA8950[...]

  • Página 4

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 4 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 7. Pinning inf ormation 7.1 Pinning Fig 2. Pin configuration TD A8950TH Fig 3. Pin configuration TD A8950J TD A8950TH VSSD VSSA VDDP2 SGND BOOT2 VDDA OUT2 IN2M VSSP2 IN2P n[...]

  • Página 5

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 5 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 7.2 Pin description 8. Functional description 8.1 General The TD A8950 is a two-channel audio po wer amplifier using class-D technology . The audio input signal is conv er t[...]

  • Página 6

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 6 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier The TD A8950 one-chip class-D amplifier contains high power s witches, drivers, timing and handshaking between the pow er switches and some control logic. Also an adv anced [...]

  • Página 7

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 7 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier In order to fully charge the coupling capacitors at the inputs, the amplifier will remain automatically in the Mute mode bef ore switching to the Oper ating mode. A complete[...]

  • Página 8

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 8 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 8.2 Pulse width modulation frequency The output signal of the amplifier is a PWM signal with a carrier frequency that typically lies between 300 kHz and 400 kHz. Using a 2nd[...]

  • Página 9

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 9 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier TFB is specified at the temperature v alue T act(th_fold) where the closed loop v oltage gain is reduced with 6 dB. The r ange of the TFB is: T act(th_fold) − 5 ° C < [...]

  • Página 10

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 10 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier Should there be an impedance drop (e.g. due to dynamic beha vior of the loudspeaker) the same protection will be activated. The maxim um output current will again be limited[...]

  • Página 11

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 11 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier [1] Amplifier gain will depend on junction temper ature and heatsink size. [2] Only complete shutdo wn of amplifier if shor t-circuit impedance is below threshold of 1 Ω[...]

  • Página 12

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 12 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 9. Limiting v alues 10. Thermal characteristics T able 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol P arameter Conditions Min[...]

  • Página 13

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 13 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 11. Static characteristics [1] The circuit is DC adjusted at V P = ± 12.5 V to ± 42.5 V . [2] With respect to SGND (0 V). [3] The tr ansition between Standby and Mute mode[...]

  • Página 14

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 14 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 12. Dynamic characteristics 12.1 Switching characteristics [1] When using an e xternal oscillator , the f osc(ext) frequency (500 kHz minimum, 900 kHz maximum) will result i[...]

  • Página 15

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 15 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 12.2 Stereo and dual SE application characteristics [1] R sL is the series resistance of inductor of low-pass LC filter in the application. [2] Output po wer is measured in[...]

  • Página 16

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 16 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 12.3 Mono BTL application characteristics [1] R sL is the series resistance of inductor of low-pass LC filter in the application. [2] Output po wer is measured indirectly; [...]

  • Página 17

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 17 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 13. Application inf ormation 13.1 Mono BTL application When using the power amplifier in a mono BTL application the inputs of both channels must be connected in parallel an[...]

  • Página 18

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 18 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 13.3.2 Bridge-Tied Load (BTL) Maximum output po wer : (3) Maximum current internally limited to 9.2 A: (4) V ariables: • R L : load impedance • R sL : series impedance o[...]

  • Página 19

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 19 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 13.5 Noise Noise should be measured using a high order low-pass filter with a cut-off frequency of 20 kHz. The standard audio band pass filters, used in audio analyz ers, [...]

  • Página 20

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 20 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier The audio signal has a crest f actor of 10 (the ratio between peak pow er and av erage pow er (20 dB)), this means that the av erage output power is 1 ⁄ 10 of the peak pow[...]

  • Página 21

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 21 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 100 ms. The a ver age dissipation will be low in this situation because of this low duty cycle . If the ov er current condition is remov ed the amplifier will remain in Ope[...]

  • Página 22

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  • Página 23

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 23 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 13.10 Lay out and grounding T o obtain a high-lev el system perf or mance, cer tain grounding techniques are essential. The input ref erence grounds hav e to be tied with th[...]

  • Página 24

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 24 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 13.11 Curves measured in reference design V P = ± 35 V , 2 × 4 Ω SE configuration. (1) OUT2, f i = 6 kHz (2) OUT2, f i = 1 kHz (3) OUT2, f i = 100 Hz Fig 12. THD as a f[...]

  • Página 25

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 25 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier V P = ± 35 V , f osc = 350 kHz, 1 × 8 Ω BTL configuration. (1) f i = 6 kHz (2) f i = 1 kHz (3) f i = 100 Hz Fig 14. THD as a function of output power , BTL configurati[...]

  • Página 26

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 26 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier V P = ± 35 V , 2 × 6 Ω SE configuration. (1) OUT2, P o = 1 W (2) OUT2, P o = 10 W Fig 16. THD as a function of frequency , SE configuration with 2 × 6 Ω load V P = [...]

  • Página 27

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 27 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier V P = ± 35 V , 2 × 4 Ω SE configuration For OUT1 and OUT2 f or both 1 W and 10 W . Fig 18. Channel separation as a function of frequency , SE configuration with 2 × 4[...]

  • Página 28

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 28 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier V P = ± 35 V , f i = 1 kHz, f osc = 325 kHz (1) 2 × 4 Ω SE configuration (2) 2 × 6 Ω SE configuration (3) 2 × 8 Ω SE configuration Fig 20. Po wer dissipation as[...]

  • Página 29

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 29 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier f i = 1 kHz, f osc = 325 kHz Note: infinite heat sink used. (1) THD = 10 %, 4 Ω (2) THD = 0.5 %, 4 Ω ; THD = 10 %, 6 Ω (3) THD = 0.5 %, 6 Ω ; THD = 10 %, 8 Ω (4) [...]

  • Página 30

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 30 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier V P = ± 35 V , V i = 100 mV , R s = 0 Ω , C i = 330 pF . (1) 1 × 8 Ω BTL configuration (2) 2 × 4 Ω SE configuration (3) 2 × 6 Ω SE configuration (4) 2 × 8 ?[...]

  • Página 31

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 31 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier Ripple on V SS , shor t on input pins. V P = ± 35 V , R L = 4 Ω, V ripple = 2 V (p-p). (1) OUT2, mute (2) OUT2, on (3) OUT2, standby Fig 26. SVRR as function of ripple fr[...]

  • Página 32

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 32 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier V P = ± 35 V , V i = 2 V (rms), f osc = 325 kHz (1) OUT2, 8 Ω (2) OUT2, 6 Ω (3) OUT2, 4 Ω Fig 28. Mute attenuation as function of frequency 001aai713 f (Hz) 10 10 5 1[...]

  • Página 33

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 33 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 14. P ac kage outline Fig 29. Packa ge outline SOT411-1 (DBS23P) UNIT A 2 REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE IEC JEDEC JEITA mm 4.6 4.3 A 4 1.15 0.85 [...]

  • Página 34

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 34 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier Fig 30. Packa ge outline SOT566-3 (HSOP24) UNIT A 4 (1) REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE 03-02-18 03-07-23 IEC JEDEC JEITA mm + 0.08 − 0.04 3.5 0.[...]

  • Página 35

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 35 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 15. Soldering of SMD pac kages This te xt provides a v er y br ief insight into a comple x technology . A more in-depth account of soldering ICs can be found in Application [...]

  • Página 36

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 36 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 15.4 Reflow soldering K ey char acteristics in reflow soldering are: • Lead-free v ersus SnPb solder ing; note that a lead-free reflow process usually leads to higher m[...]

  • Página 37

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 37 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier F or fur ther information on temperature profiles, ref er to Application Note AN10365 “Surf ace mount reflow soldering description” . 16. Revision history MSL: Moistur[...]

  • Página 38

    TDA8950_1 © NXP B.V . 2008. All rights reserved. Preliminary data sheet Rev . 01 — 9 September 2008 38 of 39 NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier 17. Legal inf ormation 17.1 Data sheet status [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘shor t data shee[...]

  • Página 39

    NXP Semiconductors TD A8950 2 × 150 W class-D po wer amplifier © 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: 9 September 2008 Document identifier: TDA8950_1 Please be aware that important notices concerning[...]