NXP Semiconductors TFA9810 Скачать руководство пользователя страница 11 | Manualshive

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TFA9810_3

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 03 — 20 February 2008

11 of 29

NXP Semiconductors

TFA9810

Audio 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

hvp

130 k

Ω

130 k

Ω

V

SSA2

010aaa033

5.5 V

5.5 V

V

SSD

100 mA

18

V

DDA2

12 V

010aaa034

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Содержание TFA9810

Страница 1: ...range asymmetrical from 8 V to 20 V n Thermally protected n Zero dead time switching n Current limiting no audible interruptions 3 Applications n Self oscillating or open loop class D audio amplifier...

Страница 2: ...5 W THD 1 6 5 7 5 W VP 14 V RL 8 THD 10 thermally limited 15 W VP 16 V RL 8 THD 10 thermally limited 15 W VP 12 V RL 6 THD 10 thermally limited 12 W VP 12 V RL 4 THD 10 thermally limited 15 W Table 1...

Страница 3: ...STABI1 CONTROL LOGIC 23 24 19 DRIVER HIGH 20 21 VDDP2 VSSP2 VDDP2 OUT2P VSSP2 BOOT2N OUT2N STAB2 STABI2 VDDA1 IN1P IN1N VSSA1 VDDA2 IN2P IN2N VSSA2 REFERENCE PROTECTION OVP UVP OCP OTP ODP WP HEATSPR...

Страница 4: ...AG OUT2P TEST BOOT2P VSSA2 OUT2N VDDA2 BOOT2N IN2N VSSP2 IN2P STAB2 VSSD HW VSSD HW 010aaa017 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 17 20 19 22 21 24 23 26 25 32 31 30 29 28 27 Table 3 Pin descrip...

Страница 5: ...when the SO OL pin is floating the TFA9810 is in open loop mode The TEST pin needs to be connected to VDDA in both situations The device has two modes SLEEP and OPERATING IN2N 14 Negative input compa...

Страница 6: ...to VSSA level by internal resistors 8 4 Diagnostic The DIAG output is an open drain output The maximum current is 2 mA Whenever one of the protections is triggered the DIAG output is activated low Th...

Страница 7: ...during the pre warning the device will shut down When the ENABLE pin is high the TFA9810 will restart automatically The restart sequence switch off switch on will take 200 ms to 500 ms Window Protect...

Страница 8: ...0 Audio amplifier 2 x 12 W 8 6 Start up sequence 9 Internal circuitry Fig 3 Start up sequence SLEEP START UP OPERATING FAULT RESTART OPERATING SHUT DOWN SLEEP FLOATING AUDIO PWM 010aaa018 AUDIO PWM FL...

Страница 9: ...2008 9 of 29 NXP Semiconductors TFA9810 Audio amplifier 2 x 12 W Fig 5 Internal circuitry 0002 Fig 6 Internal circuitry 0003 Fig 7 Internal circuitry 0004 hvp VSSA 135 k 135 k 5 5 V 5 5 V VSSA1 VDDA1...

Страница 10: ...uary 2008 10 of 29 NXP Semiconductors TFA9810 Audio amplifier 2 x 12 W Fig 8 Internal circuitry 0005 Fig 9 Internal circuitry 0006 Fig 10 Internal circuitry 0007 3 k VSSA 250 nA 7 VDDA1 010aaa028 8 VD...

Страница 11: ...Semiconductors TFA9810 Audio 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 VDDA1 VSSA1 11 010aaa031 13...

Страница 12: ...08 12 of 29 NXP Semiconductors TFA9810 Audio 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...

Страница 13: ...February 2008 13 of 29 NXP Semiconductors TFA9810 Audio 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...

Страница 14: ...circuitry 0022 VDDP1 28 VSSP1 010aaa043 12 V OUT1N 29 010aaa044 VSSD 100 mA 31 VDDA1 12 V 010aaa045 Table 7 Limiting values In accordance with the Absolute Maximum Rating System IEC 60134 Symbol Para...

Страница 15: ...imum Rating System IEC 60134 Symbol Parameter Conditions Min Max Unit Table 8 Characteristics Symbol Parameter Conditions Min Typ Max Unit Rth j a thermal resistance from junction to ambient SO32 JEDE...

Страница 16: ...ode voltage VSSA 3 VDDA 1 V IIB input bias current 1 A OverTemperature Protection OTP Tprot protection temperature 150 C OverVoltage Protection OVP Vth ovp overvoltage protection threshold voltage lev...

Страница 17: ...ontinued Tamb 25 C VP 12 V RL 8 Figure 33 unless otherwise specified Symbol Parameter Conditions Min Typ Max Unit Table 11 AC characteristics measured in typical application Tamb 25 C VP 12 V RL 8 fos...

Страница 18: ...ing Equation 1 1 Where VP supply voltage VDDPx VSSPx V RL load resistance RDSon drain source on state resistance Rs series resistance Po0 5 output power at the THD level of 0 5 W The output power at 1...

Страница 19: ...ould not exceed this threshold level of 3 A otherwise the output signal will be distorted The peak output current in BTL can be estimated using Equation 3 3 Where VP supply voltage VDDPx VSSPx V 1 RL...

Страница 20: ...C according to the speaker configuration and impedance Table 12 shows the practical required values 14 4 Differential input For a high common mode rejection ratio and a maximum of flexibility in the a...

Страница 21: ...ctors TFA9810 Audio amplifier 2 x 12 W 14 6 Curves measured in a typical application Fig 29 Input configuration for single ended input IN1P IN1N AUDIO DSP OUT1P OUT1N 010aaa022 VP 12 V Vi 100 mV 1 OUT...

Страница 22: ...cation diagram with the TFA9810 supplied from an asymmetrical supply is shown in Figure 33 VP 12 V RL 8 Po 1 W 1 OUT1 2 OUT2 Fig 31 Total harmonic distortion noise as a function of frequency VP 12 V R...

Страница 23: ...SSP2 VDDA2 VDDP1 VDDP2 010aaa023 C12 680 nF C27 470 pF C13 680 nF C28 470 pF GND GND 2 1 J3 OUT1 C9 220 nF C14 220 nF R27 10 R28 10 C20 680 nF C29 470 pF C23 680 nF C30 470 pF GND GND 2 1 J6 OUT2 C19...

Страница 24: ...VSSDVSSDVSSP1VSSP2 VDDA2 VDDP1 VDDP2 010aaa431 C12 680 nF C27 470 pF C13 680 nF C28 470 pF GND GND 2 1 J3 OUT1 C9 220 nF C14 220 nF R27 10 R28 10 C20 680 nF C29 470 pF C23 680 nF C30 470 pF GND GND 2...

Страница 25: ...V SMD 0805 X7R 7 1 C11 47 pF 25 V SMD 0402 NP0 8 4 C12 C13 C20 C23 680 nF 25 V MKT 9 1 C15 330 nF 25 V SMD 0805 X7R 10 1 C22 68 pF 25 V SMD 0402 NP0 11 1 C32 1000 F 25 V CE12 02R 12 3 J1 J3 J6 Screw...

Страница 26: ...0 27 0 18 20 7 20 3 7 6 7 4 1 27 10 65 10 00 1 2 1 0 0 95 0 55 8 0 o o 0 25 0 1 0 004 0 25 DIMENSIONS inch dimensions are derived from the original mm dimensions Note 1 Plastic or metal protrusions of...

Страница 27: ...ier 2 x 12 W 17 Revision history Table 15 Revision history Document ID Release date Data sheet status Change notice Supersedes TFA9810_3 20080220 Product data sheet TFA9810_2 Modifications Figure 33 h...

Страница 28: ...result in personal injury death or severe property or environmental damage NXP Semiconductors accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or applica...

Страница 29: ...iguration 6 8 3 2 Operating in open loop configuration 6 8 4 Diagnostic 6 8 5 Protections 6 8 6 Start up sequence 8 9 Internal circuitry 8 10 Limiting values 14 11 Thermal characteristics 15 12 Charac...

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