TFA9841J NXP Semiconductors, TFA9841J Datasheet - Page 10

• Manufacturer Part Number: TFA9841J
• Description: Audio Amplifiers 1 X 7W SINGLE ENDED
• Manufacturer: NXP Semiconductors

Specifications of TFA9841J

• Product: Class-AB
• Output Power: 7.5 W
• Available Set Gain: 26 dB
• Thd Plus Noise: 0.1 %
• Operating Supply Voltage: 17 V
• Maximum Power Dissipation: 8000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Audio Load Resistance: 4 Ohms
• Input Signal Type: Single
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Single
• Supply Type: Single
• Supply Voltage (max): 26 V
• Supply Voltage (min): 9 V
• Output Type: 1-Channel Mono
• Package / Case: DBSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TFA9841J/N1,112

Philips Semiconductors
13. Application information
9397 750 12014
Preliminary data
Fig 11. Typical SE application diagram.
controller
micro-
7.5 V
k
1.5
k
10
k
50
BC547
13.1.1 Layout and grounding
13.1 Printed-circuit board
100
k
BC547
270
V
Remark: Because of switching inductive loads, the output voltage can rise beyond
the maximum supply voltage of 28 V. At high supply voltages, it is recommended to
use (Schottky) diodes to the supply voltage and ground.
To obtain a high-level system performance, certain grounding techniques are
essential. The input reference grounds have to be tied with their respective source
grounds and must have separate tracks from the power ground tracks; this will
prevent the large (output) signal currents from interfering with the small AC input
signals. The small-signal ground tracks should be physically located as far as
possible from the power ground tracks. Supply and output tracks should be as wide
as possible for delivering maximum output power.
CC
2.2
F
V i
47
F
220 nF
22
F
MODE
Rev. 01 — 06 February 2004
IN1
SVR 6
CIV
1
3
7
5
GND
TFA9841J
STANDBY
V
9
MUTE
CC
ON
V
REF
0.5V
CC
SHORT-CIRCUIT
TEMPERATURE
PROTECTION
V
CC
1-channel audio amplifier (1 x SE)
AND
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
2
OUT1
mdb794
100 nF
TFA9841J
470 F
1000 F
R
4
L
10 of 17
V
CC