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TDA8559_3 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheets Rev. 03 — 15 May 2006 23 of 36
Philips Semiconductors
TDA8559T
Low-voltage stereo headphone amplifier
f = 1 kHz.
(1) V
P
= 3 V, R
L
= 32 Ω.
(2) V
P
= 5 V, R
L
= 32 Ω.
R
L
= 32 Ω.
(1) V
P
= 5 V, THD = 50 mW.
(2) V
P
= 3 V, THD = 20 mW.
Fig 18. THD as a function of P
o
(stereo headphone) Fig 19. THD as a function of frequency (stereo
headphone)
10
2
10
1
P
o
(W)
THD
(%)
10
−
1
10
−2
mda091
10
−
3
10
−2
10
−
1
1
(2) (1)
1
THD
(%)
f (Hz)
10
−1
10
−2
mda092
10 10
2
(1)
10
3
10
4
10
5
(2)
(1) V
P
= 12 V.
(2) V
P
= 3 V and 6 V.
(3) V
P
= 3 V, 6 V and 12 V.
(1) V
P
= 3 V.
(2) V
P
= 12 V.
Fig 20. I
q
as a function of V
stb
(stereo headphone) Fig 21. V
o
as a function of V
mute
(stereo headphone)
321
(1) (2) (3)
V
stb
(V)
I
q
(A)
0
mda093
10
−2
10
−3
10
−4
10
−5
10
−6
10
−7
2.50 0.5 1 1.5 2
1
V
o
(V)
V
mute
(V)
10
−1
10
−2
10
−3
10
−4
10
−5
mda094
(2) (1)