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NCP4894/D

更新时间： 2024-11-22 23:53:27
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其他 - ETC 放大器功率放大器
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16页 163K
描述
1W Differential Audio Power Amplifier

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NCP4894/D 数据手册

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NCP4894  
Product Preview  
1.0 Watt Differential Audio  
Power Amplifier with  
Selectable Shutdown  
The NCP4894 is a differential audio power amplifier designed for  
portable communication device applications. This feature and the  
excellent audio characteristics of the NCP4894 are a guarantee of a  
high quality sound, for example, in mobile phones applications. With  
less than 0.01% distortion (THD + N), the NCP4894 is capable of  
delivering 1.0 W of continuous average power to an 8.0 W load from  
a 5.0 V power and still 250 mW from 2.6 V.  
The NCP4894 provides high quality audio while requiring few  
external components and minimal power consumption. It features a  
low−power consumption shutdown mode.  
http://onsemi.com  
MARKING  
DIAGRAMS  
9−Pin Flip−Chip CSP  
FC SUFFIX  
xxx  
YYWW  
1
CASE 499E  
A1  
To be flexible, shutdown may be enabled by either a logic high or  
low depending on the voltage applied on the SD MODE pin.  
The NCP4894 contains circuitry to prevent from « pop and click »  
noise that would otherwise occur during turn−on and turn−off  
transitions.  
Micro−10  
DM SUFFIX  
CASE 846B  
xxxx  
YWW  
AWL  
8
1
For maximum flexibility, the NCP4894 provides an externally  
controlled gain (with resistors), as well as an externally controlled  
turn−on time (with bypass capacitor).  
Due to its excellent PSRR, it can be directly connected to the  
battery, saving the use of an LDO.  
xxx  
= Specific Device Code  
YY, Y = Year  
WW, W = Work Week  
A
WL  
= Assembly Location  
= Wafer Lot  
This device is available in 9−Pin Flip−Chip CSP and Micro−10  
packages.  
PIN CONNECTIONS  
9−Pin Flip−Chip CSP  
Features  
• Differential Amplification  
• Shutdown High or Low Selectivity  
• 1.0 W to an 8.0 W Load from a 5.0 V Power Supply  
• Superior PSRR: Direct Connection to the Battery  
• « Pop and Click » Noise Protection Circuit  
• Ultra Low Current Shutdown Mode  
• 2.2 V−5.5 V Operation  
A1  
A2  
A3  
INP  
BYPASS OUTB  
B1  
VP  
B2  
B3  
SD MODE VM  
• External Gain Configuration Capability  
• External Turn−on Configuration Capability  
• Thermal Overload Protection Circuitry  
• Pb−Free Packages are Available  
C1  
C2  
C3  
INM SD SELECT OUTA  
(Top View)  
Typical Applications  
• Portable Electronic Devices  
• PDAs  
Micro−10  
SD SELECT  
INM  
1
2
10 OUTA  
VP  
9
• Mobile Phones  
SD MODE  
INP  
NC  
8
7
6
3
4
5
VM  
BYPASS  
OUTB  
(Top View)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 13 of this data sheet.  
This document contains information on a product under development. ON Semiconductor  
reserves the right to change or discontinue this product without notice.  
Semiconductor Components Industries, LLC, 2004  
1
Publication Order Number:  
February, 2004 − Rev. 2  
NCP4894/D  
1234567...16

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