TDA8944AJ/N2,112 NXP Semiconductors, TDA8944AJ/N2,112 Datasheet - Page 16

• Manufacturer Part Number: TDA8944AJ/N2,112
• Description: IC AMP AUDIO PWR 7W STER 17SIL
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TDA8944AJ/N2,112

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 7W x 2 @ 8 Ohm
• Voltage - Supply: 4.5 V ~ 18 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Standby, Volume Control
• Mounting Type: Through Hole
• Package / Case: 17-SIL (Bent and Staggered Leads)
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 7x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.07@8Ohm@1W%
• Single Supply Voltage (typ): 12V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 18W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 18V
• 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: 17
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3461-5; 935270284112; TDA8944AJU

Philips Semiconductors
15. Test information
9397 750 09433
Product data
15.1.1 Test conditions
15.1 Quality information
At V
see
dissipation - is: 150
The calculation above is for an application at worst-case (stereo) sine-wave output
signals. In practice music signals will be applied, which decreases the maximum
power dissipation to approximately half of the sine-wave power dissipation (see
Section
To increase the lifetime of the IC, T
heatsink of approximately 14 K/W for music signals.
The “General Quality Specification for Integrated Circuits, SNW-FQ-611D” is
applicable (ordering code 9397 750 05459).
T
unless otherwise specified.
Remark: In the graphs as function of frequency no bandpass filter was applied;
see
amb
P
R
R
P
R
R
th(tot)
th(h-a)
th(tot)
th(h-a)
CC
Figure
Figure 9
= 25 C; V
R
R
= 12 V and R
th(tot)
th(tot)
8.2.2). This allows for the use of a smaller heatsink:
= 100/8 = 12.5 K/W
= 100/(0.5
= R
= R
12. For T
= 100 C
= 100 C
th(tot)
th(tot)
and 13.
CC
Rev. 01 — 01 March 2002
= 12 V; f = 1 kHz; R
R
R
j(max)
L
th(j-mb)
th(j-mb)
8) = 25 K/W
50 = 100 C.
= 8
= 150 C the temperature rise - caused by the power
= 12.5
= 25
the measured worst-case sine-wave dissipation is 8 W;
2 x 7 W BTL audio amplifier with DC gain control
j(max)
4.5 = 20.5 K/W.
4.5 = 8.0 K/W.
L
should be reduced to 125 C. This requires a
= 8 ; audio pass band 22 Hz to 22 kHz;
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
TDA8944AJ
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