TFA9843J/N1,112 NXP Semiconductors, TFA9843J/N1,112 Datasheet - Page 4

• Manufacturer Part Number: TFA9843J/N1,112
• Description: IC AMP AUDIO PWR 29W STER 9SIL
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TFA9843J/N1,112

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Package / Case: 9-SIL (Bent and Staggered Leads)
• Max Output Power X Channels @ Load: 29W x 1 @ 8 Ohm; 14W x 2 @ 4 Ohm
• Voltage - Supply: 9 V ~ 26 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Product: General Purpose Audio Amplifiers
• Operating Supply Voltage: 9 V to 26 V
• Supply Current: 60 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3455-5; 935273794112; TFA9843J

Philips Semiconductors
8. Functional description
9397 750 12587
Preliminary data
7.2 Pin description
8.1 Input configuration
8.2 Power amplifier
Table 3:
The input cut-off frequency is:
Single-ended application: R
Bridge-tied load application: R
As shown in
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.
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:
Symbol
IN2+
OUT2
CIV
IN1+
GND
SVR
MODE
OUT1+
V
f
f
f
•
•
i cut off
i cut off
i cut off
CC
Lower peak value of the supply current
Ripple frequency on the supply voltage is twice the signal frequency
–
–
–
Pin description
=
=
=
Equation 2
---------------------------- -
2
---------------------------------------------------------------- -
2
---------------------------------------------------------------- -
2
Pin
1
2
3
4
5
6
7
8
9
60 10
30 10
R
Rev. 02 — 19 January 2004
1
i
C
i
3
3
and
1
1
220 10
470 10
i
Description
input 2
inverted loudspeaker terminal 2
common input voltage decoupling
input 1
ground
half supply voltage decoupling (ripple rejection)
mode selection input (standby, mute and operating)
non inverted loudspeaker terminal 1
supply voltage
= 60 k and C
Equation
i
= 30 k and C
9 –
9 –
2-channel audio amplifier (2 x SE or 1 x BTL)
3, large capacitor values for the inputs are not
=
=
12 Hz
11 Hz
i
= 220 nF:
i
= 470 nF:
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
TFA9843J
4 of 21
(1)
(2)
(3)