NXP Semiconductors TFA9810 - Manual (Page 29)

NXP Semiconductors
TFA9810
Audio 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: [email protected]
Date of release: 20 February 2008
Document identifier: TFA9810_3
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
20. Contents
1 General description . . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Quick reference data . . . . . . . . . . . . . . . . . . . . . 1
5 Ordering information . . . . . . . . . . . . . . . . . . . . . 2
6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Functional description . . . . . . . . . . . . . . . . . . . 5
8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8.2 Interfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8.3 Input comparators. . . . . . . . . . . . . . . . . . . . . . . 6
8.3.1 Operating in self-oscillating configuration . . . . . 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 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 15
12.1 Static characteristics. . . . . . . . . . . . . . . . . . . . 15
12.2 Dynamic characteristics . . . . . . . . . . . . . . . . . 16
12.3 AC characteristics measured in a typical
application. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13 Quality specification . . . . . . . . . . . . . . . . . . . . 18
14 Application information. . . . . . . . . . . . . . . . . . 18
14.1 Output power estimation . . . . . . . . . . . . . . . . . 18
14.2 Output current limiting. . . . . . . . . . . . . . . . . . . 19
14.3 Speaker configuration and impedance . . . . . . 20
14.4 Differential input . . . . . . . . . . . . . . . . . . . . . . . 20
14.5 Single-ended input . . . . . . . . . . . . . . . . . . . . . 20
14.6 Curves measured in a typical application . . . . 21
14.7 Typical application diagram TFA9810 . . . . . . . 22
14.8 Typical application: bill of materials. . . . . . . . . 25
14.9 Snubber network. . . . . . . . . . . . . . . . . . . . . . . 25
15 Test information . . . . . . . . . . . . . . . . . . . . . . . . 25
16 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 26
17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 27
18 Legal information. . . . . . . . . . . . . . . . . . . . . . . 28
18.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 28
18.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
18.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
18.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 28
19 Contact information . . . . . . . . . . . . . . . . . . . . 28
20 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29