Philips Semiconductors
2 x 22 W BTL stereo car radio power
amplifier with loudspeaker protection
Product specification
TDA1553Q
AC CHARACTERISTICS
VP = 14.4 V; RL = 4 Ω; f = 1 kHz; Tamb = 25 °C; measurements taken using Fig.3; unless otherwise specified
PARAMETER
CONDITIONS
SYMBOL MIN.
TYP. MAX. UNIT
Output power
Output power at VP = 13.2 V
Total harmonic distortion
Power bandwidth
THD = 0.5%
THD = 10%
THD = 0.5%
THD = 10%
Po = 1 W
THD = 0.5%
Po = −1 dB
w.r.t. 15 W
Low frequency roll-off
High frequency roll-off
Closed loop voltage gain
Supply voltage ripple rejection
ON
mute
stand-by
Input impedance
Noise output voltage
(RMS value)
ON
ON
mute
Channel separation
Channel unbalance
note 4
−1 dB
−1 dB
notes 5, 6
notes 5, 7
notes 5, 6, 7
notes 5, 6, 7
RS = 0 Ω; note 8
RS = 10 kΩ; note 8
notes 8, 9
Po
15
17
−
W
Po
20
22
−
W
Po
−
12
−
W
Po
−
17
−
W
THD
−
0.1
−
%
Bw
−
20 to −
Hz
15000
fL
−
25
−
Hz
fH
20
−
−
kHz
Gv
25
26
27
dB
RR
42
−
−
dB
RR
48
−
−
dB
RR
48
−
−
dB
RR
80
−
−
dB
|Zi|
50
60
75
kΩ
Vno(rms)
−
Vno(rms)
−
Vno(rms)
−
α
40
|∆Gv|
−
70
120
µV
100
−
µV
60
−
µV
−
−
dB
−
1
dB
Notes to the characteristics
1. The circuit is DC adjusted at VP = 6 V to 18 V and AC operating at VP = 8.5 V to 18 V.
2. At 18 V < VP < 30 V the DC output voltage ≤ VP/2.
3. Conditions:
a) V11 = 0 V
b) short-circuit to GND
c) switch V11 to MUTE or ON condition (rise time ≥ 10 µs).
4. Frequency response externally fixed.
5. Ripple rejection measured at the output with a source impedance of 0 Ω (maximum ripple amplitude of 2 V).
6. Frequency f = 100 Hz.
7. Frequency between 1 kHz and 10 kHz.
8. Noise voltage measured in a bandwidth of 20 Hz to 20 kHz.
9. Noise output voltage independent of RS (VI = 0 V).
July 1994
7