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TFA9810_3

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 03 — 20 February 2008

28 of 29

NXP Semiconductors

TFA9810

Audio amplifier 2 x 12 W

18. Legal information

18.1

Data sheet status

[1]

Please consult the most recently issued document before initiating or completing a design.

[2]

The term ‘short data sheet’ is explained in section “Definitions”.

[3]

The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL

http://www.nxp.com

.

18.2

Definitions

Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.

Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.

18.3

Disclaimers

General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.

Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.

Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to 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 applications and
therefore such inclusion and/or use is at the customer’s own risk.

Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.

Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.

Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.

Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at

http://www.nxp.com/profile/terms

, including those pertaining to warranty,

intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.

No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.

18.4

Trademarks

Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.

19. Contact information

For more information, please visit:

http://www.nxp.com

For sales office addresses, please send an email to:

[email protected]

Document status

[1][2]

Product status

[3]

Definition

Objective [short] data sheet

Development

This document contains data from the objective specification for product development.

Preliminary [short] data sheet

Qualification

This document contains data from the preliminary specification.

Product [short] data sheet

Production

This document contains the product specification.

Summary of Contents for TFA9810

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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