tda8941p NXP Semiconductors, tda8941p Datasheet - Page 15

• Manufacturer Part Number: tda8941p
• Description: 1.5 W Mono Bridge Tied Load Btl Audio Amplifier
• Manufacturer: NXP Semiconductors

15. Test information
Philips Semiconductors
9397 750 06864
Product specification
14.2 Thermal behaviour and T
15.1 Quality information
15.2 Test conditions
The measured maximum thermal resistance of the IC package, R
A calculation for the maximum ambient temperature can be made, with the following
parameters:
At V
1.15 W; see
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
The General Quality Specification for Integrated Circuits, SNW-FQ-611D is
applicable.
T
unless otherwise specified.
Remark: In the graphs as function of frequency no bandpass filter was applied;
see
amb
V
T
R
T
T
T
CC
j(max)
amb(max)
amb(max)
amb(max)
th(tot)
CC
Figure 7
= 25 C; V
= 9 V and R
= 9 V and R
8.2.2). For T
is the total thermal resistance between the junction and the ambient.
= 150 C.
= 150 – 1.15
= 150 – 0.6
= 125 – 0.6
Figure
and 12.
CC
L
= 9 V; f = 1 kHz; R
L
Rev. 02 — 7 April 2000
11. For T
= 16
j(max)
= 16
100 = 90 C
100 = 65 C
= 150 C the maximum ambient temperature is:
100 = 35 C
the measured worst-case sine-wave dissipation is
j(max)
amb(max)
= 150 C the maximum ambient temperature is:
j(max)
L
= 16 ; audio pass band 22 Hz to 22 kHz;
should be reduced to 125 C. This results in:
calculation
1.5 W mono BTL audio amplifier
© Philips Electronics N.V. 2000. All rights reserved.
TDA8941P
th(j-a)
is 100 K/W.
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