TFA9842J/N1.112 NXP Semiconductors, TFA9842J/N1.112 Datasheet - Page 4

• Manufacturer Part Number: TFA9842J/N1.112
• Manufacturer: NXP Semiconductors

Specifications of TFA9842J/N1.112

• Operational Class: Class-AB
• Output Power (typ): 15x1@8Ohm/7.5x2@4OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.05@8Ohm@1W%
• Single Supply Voltage (typ): 17V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 35W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 9V
• Single Supply Voltage (max): 26V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 9
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
8. Functional description
9397 750 12013
Preliminary data
7.2 Pin description
8.1 Input configuration
8.2 Power amplifier
Table 3:
The input cut-off frequency is:
SE application: R
BTL 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 Single-Ended (SE) and/or Bridge-Tied Load (BTL) amplifier
with an all-NPN output stage, capable of delivering a peak output current of 3 A.
Using the TFA9842J as a BTL amplifier offers the following advantages:
Symbol
IN2+
OUT2
CIV
IN1+
GND
SVR
MODE
OUT1+
V
TAB
f
f
f
•
i cut off
i cut off
i cut off
CC
Lower peak value of the supply current
–
–
–
Pin description
=
=
=
Equation 2
---------------------------- -
2
---------------------------------------------------------------- -
2
---------------------------------------------------------------- -
2
Pin
1
2
3
4
5
6
7
8
9
-
60 10
30 10
R
i
= 60 k and C
1
i
i
Rev. 01 — 26 April 2004
= 30 k and C
C
i
3
3
and
1
1
220 10
470 10
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
back side tab or heats spreader has to be connected to ground
Equation
i
= 220 nF:
i
= 470 nF:
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
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
TFA9842J
4 of 21
(1)
(2)
(3)