Ac characteristics – Philips TDA1562ST User Manual
Page 13
2003 Feb 12
13
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
AC CHARACTERISTICS
V
P
= 14.4 V; R
L
= 4
Ω
; R
s
= 0
Ω
; f = 1 kHz; T
amb
= 25
°
C; measurements in accordance with Fig.9; unless otherwise
specified.
Notes
1. The low frequency power roll-off is determined by the value of the electrolytic lift capacitors.
2. The low frequency gain roll-off is determined by the value of the input coupling capacitors.
3. Supply voltage ripple rejection is measured across R
L
; ripple voltage V
ripple(max)
= 2 V (p-p).
4. Common mode rejection ratio is measured across R
L
; common mode voltage V
cm(max)
= 2 V (p-p).
CMMR (dB) = differential gain (G
v
) + common mode attenuation (
α
cm
). Test set-up according to Fig.10; mismatch of
input coupling capacitors excluded.
5. Input signal rejection ratio is measured across R
L
; input voltage V
i(max)
= 2 V (p-p). ISSR (dB) = different gain
(G
v
) + mute attenuation (
α
m
).
6. Noise output voltage is measured in a bandwidth of 20 Hz to 20 kHz.
7. Noise output voltage is independent of source impedance R
s
.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
P
o
output power
class-B; THD = 10%
16
19
−
W
class-H; THD = 10%
60
70
−
W
class-H; THD = 0.5%
45
55
−
W
f
ro(h)(P)
high frequency power roll-off P
o
(
−
1 dB); THD = 0.5%;
note 1
−
20
−
kHz
THD
total harmonic distortion
P
o
= 1 W
−
0.03
−
%
P
o
= 20 W
−
0.06
−
%
DDD active
−
2.1
−
%
G
v
voltage gain
25
26
27
dB
f
ro(h)(G)
high frequency gain roll-off
G
v
(
−
1 dB); note 2
20
−
−
kHz
Z
i(dif)
differential input impedance
90
150
210
k
Ω
SVRR
supply voltage ripple
rejection
on and mute; note 3
55
63
−
dB
standby; note 3
−
90
−
dB
CMRR
common mode rejection
ratio
on; note 4
56
80
−
dB
ISRR
input signal rejection ratio
mute; note 5
80
100
−
dB
V
n(o)
noise output voltage
on; note 6
−
100
150
µ
V
mute; notes 6 and 7
−
60
−
µ
V