July 1994 7
Philips Semiconductors Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
AC CHARACTERISTICS
V
p
= 14.4 V; R
L
= 4 Ω; f = 1 kHz; T
amb
= 25 °C; unless otherwise specified
SYMBOL PARAMETER CONDITION MIN. TYP. MAX. UNIT
P
O
output power THD = 0.5% 15 17 − W
THD = 10% 20 22 − W
THD = 0.5%;
V
P
= 13.2 V
− 12 − W
THD = 10%;
V
P
= 13.2 V
− 17 − W
THD total harmonic distortion P
O
= 1 W − 0.1 − %
B power bandwidth THD = 0.5%;
P
O
= −1 dB; with
respect to 15 W
− 20 to
15000
− Hz
f
l
low frequency roll-off −1 dB; note 4 − 25 − Hz
f
h
high frequency roll-off −1 dB 20 −−kHz
G
v
closed loop voltage gain 25 26 27 dB
SVRR supply voltage ripple rejection note 5
ON condition 48 −−dB
MUTE condition 48 −−dB
stand-by condition 80 −−dB
Z
i
input impedance 100 120 150 kΩ
∆Z
i
input impedance note 6 − 4 − %
V
no
noise output voltage ON: R
s
= 0 Ω; note 7 − 70 120 µV
ON: R
s
= 10 kΩ;
note 7
− 100 −µV
MUTE: R
s
= 10 kΩ;
notes 7 and 8
− 60 −µV
α channel separation R
s
= 10 kΩ 40 −−dB
∆G
v
channel unbalance −−1dB
CMRR common mode rejection ratio note 9 64 72 − dB
THD total harmonic distortion I
DDD
= 50 µA (peak) − 3.5 − %
