TDA8947J/N3,112 NXP Semiconductors, TDA8947J/N3,112 Datasheet - Page 5

• Manufacturer Part Number: TDA8947J/N3,112
• Description: IC AMP AUDIO PWR 29W QUAD 17SIL
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TDA8947J/N3,112

• Output Type: 4-Channel (Quad)
• Package / Case: 17-SIL (Bent and Staggered Leads)
• Max Output Power X Channels @ Load: 29W x 2 @ 8 Ohm; 14W x 4 @ 4 Ohm
• Voltage - Supply: 9 V ~ 26 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Product: Class-AB
• Output Power: 29 W
• Available Set Gain: 32 dB
• Thd Plus Noise: 0.05 %
• Operating Supply Voltage: 18 V
• Maximum Power Dissipation: 69000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Audio Load Resistance: 8 Ohms
• Input Signal Type: Single
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential, Single
• Supply Type: Single
• Supply Voltage (max): 26 V
• Supply Voltage (min): 9 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3458-5; 935274472112; TDA8947J

Philips Semiconductors
8. Functional description
9397 750 14938
Product data sheet
8.1 Input configuration
8.2 Power amplifier
Table 3:
The input cut-off frequency is:
For SE application R
For 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 BTL and/or SE amplifier with an all-NPN output stage, capable of
delivering a peak output current of 4 A.
Using the TDA8947J as a BTL amplifier offers the following advantages:
Symbol
V
OUT4+
TAB
f
f
f
i cut off
i cut off
i cut off
•
•
•
•
CC2
Low peak value of the supply current
Ripple frequency on the supply voltage is twice the signal frequency
No expensive DC-blocking capacitor
Good low frequency performance
–
–
–
Pin description
=
=
=
Equation 2
---------------------------- -
2
---------------------------------------------------------------- -
2
---------------------------------------------------------------- -
2
60 10
30 10
R
Pin
16
17
-
1
i
i
C
= 60 k and C
i
= 30 k and C
i
Rev. 02 — 16 June 2005
3
3
and
1
1
…continued
220 10
470 10
Description
supply voltage channels 3 and 4
non inverted loudspeaker output of channel 4
back side tab or heat spreader has to be connected to ground
Equation
9 –
9 –
i
= 220 nF:
i
3, large capacitor values for the inputs are not
= 470 nF:
=
=
12 Hz
11 Hz
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
4-channel audio amplifier
TDA8947J
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