Philips TDA8559T - Manual (Page 23)

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)
3 2 1
(1) (2) (3)
V stb (V)
I
q
(A)
0
mda093
10
− 2
10
− 3
10
− 4
10
− 5
10
− 6
10
− 7
2.5 0 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)