Moteur de recherche de fiches techniques de composants électroniques
Selected language     French  ▼
Nom de la pièce
         Description


TFA9843J Datasheet(Fiches technique) 4 Page - NXP Semiconductors

Numéro de pièce TFA9843J
Description  2-channel audio amplifier (SE: 1 W to 20 W or BTL: 4 W to 40 W)
Télécharger  21 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo 

 
 4 page
background image
Philips Semiconductors
TFA9843J
2-channel audio amplifier (2 x SE or 1 x BTL)
Preliminary data
Rev. 02 — 19 January 2004
4 of 21
9397 750 12587
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
7.2 Pin description
8.
Functional description
8.1 Input configuration
The input cut-off frequency is:
(1)
Single-ended application: Ri =60kΩ and Ci = 220 nF:
(2)
Bridge-tied load application: Ri =30kΩ and Ci = 470 nF:
(3)
As shown in Equation 2 and Equation 3, large capacitor values for the inputs are not
necessary; so the switch-on delay during charging of the input capacitors can be
minimized. This results in a good low frequency response and good switch-on
behavior.
8.2 Power amplifier
The power amplifier is a Bridge-Tied Load (BTL) or Single-Ended (SE) amplifier with
an all-NPN output stage, capable of delivering a peak output current of 4 A.
Using the TFA9843J as a BTL amplifier offers the following advantages:
Lower peak value of the supply current
Ripple frequency on the supply voltage is twice the signal frequency
Table 3:
Pin description
Symbol
Pin
Description
IN2+
1
input 2
OUT2
2
inverted loudspeaker terminal 2
CIV
3
common input voltage decoupling
IN1+
4
input 1
GND
5
ground
SVR
6
half supply voltage decoupling (ripple rejection)
MODE
7
mode selection input (standby, mute and operating)
OUT1+
8
non inverted loudspeaker terminal 1
VCC
9
supply voltage
f
i cut
off
()
1
2
π R
i
C
i
×
()
-----------------------------
=
f
i cut
off
()
1
2
π 60 10
3
×
220
×
10
9
×
()
-----------------------------------------------------------------
12 Hz
==
f
i cut
off
()
1
2
π 30 10
3
×
470
×
10
9
×
()
-----------------------------------------------------------------
11 Hz
==




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21 


Datasheet Download



Numéro de composants électroniques

Numéro de pièceDescription des composantsHtml ViewFabricant
TDA8947J4-channel audio amplifier SE: 1 W to 25 W; BTL: 4 W to 50 W 1 2 3 4 5 MoreNXP Semiconductors
TFA9842J2-channel audio amplifier; SE: 1 W to 7.5 W; BTL: 2 W to 15 W 1 2 3 4 5 MoreNXP Semiconductors
LA4636For General Audio Use 11 W 2-Channel BTL AF Power Amplifier 1 2 3 Sanyo Semicon Device
LA490617-W 2-Channel BTL AF High-Efficiency Power Amplifier for Car Audio Systems 1 2 3 4 5 MoreSanyo Semicon Device
LA4635AFor General Audio Use 2-Channel BTL AF Power Amplifier 1 2 3 Sanyo Semicon Device
LA42775 W 2-Channel Power Amplifier 1 2 3 4 5 MoreSanyo Semicon Device
LA4635B2-Channel BTL AF Power Amplifier 1 2 3 Sanyo Semicon Device
STK3152III2-Channel Voltage Amplifier for 80 to 90W power Amplifier Dual Supplies 1 2 List of Unclassifed Manufacturers
KIA6282KBIPOLAR LINEAR INTEGRATED CIRCUIT 4.6W DUAL AUDIO POWER AMPLIFIER 1 2 3 4 5 MoreKEC(Korea Electronics)
KIA8262HBIPOLAR LINEAR INTEGRATED CIRCUIT MAX POWER 43W QUAD BTL AUDIO POWER AMPLIFIER 1 2 3 4 5 MoreKEC(Korea Electronics)

Lien URL

AllDATASHEET vous a-t-il été utile ?   [ DONATE ]  

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Favoris   |   Echange de liens   |   Fabricants
All Rights Reserved © Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl