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TDA8950 Datasheet(PDF) 39 Page - NXP Semiconductors

Part # TDA8950
Description  2 X 150 W class-D power amplifier
PDF  39 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

TDA8950 Datasheet(HTML) 39 Page - NXP Semiconductors

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NXP Semiconductors
TDA8950
2
× 150 W class-D power 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 this document and the product(s)
described herein, have been included in section ‘Legal information’.
19. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
5
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
6
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
7.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
8
Functional description . . . . . . . . . . . . . . . . . . . 5
8.1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8.2
Pulse width modulation frequency . . . . . . . . . . 8
8.3
Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8.3.1
Thermal protection . . . . . . . . . . . . . . . . . . . . . . 8
8.3.1.1
Thermal FoldBack (TFB) . . . . . . . . . . . . . . . . . 8
8.3.1.2
OverTemperature Protection (OTP) . . . . . . . . . 9
8.3.2
OverCurrent Protection (OCP) . . . . . . . . . . . . . 9
8.3.3
Window Protection (WP). . . . . . . . . . . . . . . . . 10
8.3.4
Supply voltage protections . . . . . . . . . . . . . . . 10
8.4
Differential audio inputs . . . . . . . . . . . . . . . . . 11
9
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 12
10
Thermal characteristics. . . . . . . . . . . . . . . . . . 12
11
Static characteristics. . . . . . . . . . . . . . . . . . . . 13
12
Dynamic characteristics . . . . . . . . . . . . . . . . . 14
12.1
Switching characteristics . . . . . . . . . . . . . . . . 14
12.2
Stereo and dual SE application
characteristics. . . . . . . . . . . . . . . . . . . . . . . . . 15
12.3
Mono BTL application characteristics . . . . . . . 16
13
Application information. . . . . . . . . . . . . . . . . . 17
13.1
Mono BTL application . . . . . . . . . . . . . . . . . . . 17
13.2
Pin MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13.3
Output power estimation . . . . . . . . . . . . . . . . . 17
13.3.1
SE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13.3.2
Bridge-Tied Load (BTL) . . . . . . . . . . . . . . . . . 18
13.4
External clock . . . . . . . . . . . . . . . . . . . . . . . . . 18
13.5
Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
13.6
Heatsink requirements . . . . . . . . . . . . . . . . . . 19
13.7
Output current limiting. . . . . . . . . . . . . . . . . . . 20
13.8
Pumping effects . . . . . . . . . . . . . . . . . . . . . . . 21
13.9
Application schematics . . . . . . . . . . . . . . . . . . 21
13.10
Layout and grounding . . . . . . . . . . . . . . . . . . . 23
13.11
Curves measured in reference design . . . . . . 24
14
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 33
15
Soldering of SMD packages . . . . . . . . . . . . . . 35
15.1
Introduction to soldering . . . . . . . . . . . . . . . . . 35
15.2
Wave and reflow soldering . . . . . . . . . . . . . . . 35
15.3
Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 35
15.4
Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . 36
16
Revision history . . . . . . . . . . . . . . . . . . . . . . . 37
17
Legal information . . . . . . . . . . . . . . . . . . . . . . 38
17.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 38
17.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
17.3
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 38
17.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 38
18
Contact information . . . . . . . . . . . . . . . . . . . . 38
19
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39



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