Mode; Heatsink Design; Test Conditions - Philips TDA8559T Product Data

Philips Semiconductors

13.2 Heatsink design

13.3 Test conditions

TDA8559_3
Product data sheets
The capacitor Cb is recommended for stability improvement. The value may vary between
10 nF and 100 nF. This capacitor should be placed close to the IC between pin 12 and
pin 13.
The standard application is stereo headphone single-ended with a 32
to buffer (see Figure 9). The headphone amplifier can deliver a peak output current of
150 mA into the load.
For the SO16 envelope R
T = 25 C is:
1.2 W
amb
For T = 60 C the maximum total power dissipation is:
amb
T = 25 C; unless otherwise specified: V
amb
low input mode, band-pass filter: 22 Hz to 30 kHz. The total harmonic distortion as a
function of frequency was measured with low-pass filter of 80 kHz. The quiescent current
has been measured without any load impedance.
In applications with coupling capacitors towards the load, an electrolytic capacitor has to
be connected to pin 4 (SVRR).
1. The graphs for the single-ended application have been measured with the application
illustrated in Figure
configuration for input mode high
2. The graphs for the BTL application 'input mode low' have been measured with the
application circuit illustrated in
Figure 4.
3. The graphs for the line-driver application have been measured with the application
circuit illustrated in
mode high.
= 105 K/W; the maximum sinewave power dissipation for
th(j-a)
150 25 –
= -------------------- -
105
P
9; input configuration for input mode low
(Figure
Figure 11
Figure 13 and the input configuration illustrated in
Rev. 03 — 15 May 2006
Low-voltage stereo headphone amplifier
0.85 W =
= 3 V, f = 1 kHz, R = 32 , Gain = 26 dB,
L
(Figure
6).
and the input configuration illustrated in
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
TDA8559T
load impedance
150 60 –
-------------------- -
105
4) and input
Figure 6; input
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