TFA9815 NXP Semiconductors, TFA9815 Datasheet - Page 26

• Manufacturer Part Number: TFA9815
• Description: The TFA9815 is a 2-channel power comparator for high-efficiency class D audio amplifiersystems
• Manufacturer: NXP Semiconductors

NXP Semiconductors
18. Contents
1
2
3
4
5
6
7
7.1
7.2
8
8.1
8.2
8.3
8.4
8.5
8.6
9
10
11
12
12.1
12.2
12.3
13
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
14
15
16
16.1
16.2
16.3
16.4
17
18
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick reference data . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 5
Internal circuitry. . . . . . . . . . . . . . . . . . . . . . . . . 9
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 12
Thermal characteristics. . . . . . . . . . . . . . . . . . 12
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 13
Application information. . . . . . . . . . . . . . . . . . 15
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 23
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 24
Legal information. . . . . . . . . . . . . . . . . . . . . . . 25
Contact information. . . . . . . . . . . . . . . . . . . . . 25
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Interfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Input comparators. . . . . . . . . . . . . . . . . . . . . . . 6
Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . 8
Static characteristics. . . . . . . . . . . . . . . . . . . . 13
Dynamic characteristics . . . . . . . . . . . . . . . . . 14
AC characteristics measured in typical
application. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Output power estimation. . . . . . . . . . . . . . . . . 15
Output current limiting. . . . . . . . . . . . . . . . . . . 16
Speaker configuration and impedance . . . . . . 16
Differential input . . . . . . . . . . . . . . . . . . . . . . . 17
Single-ended input . . . . . . . . . . . . . . . . . . . . . 17
Curves measured in a typical application . . . . 18
Typical application diagram TFA9815 . . . . . . . 19
Typical application: bill of materials. . . . . . . . . 21
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 25
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2008.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Audio amplifier 2 x 17 W
Date of release: 16 December 2008
Document identifier: TFA9815_1
TFA9815
All rights reserved.