sta559bwqs STMicroelectronics, sta559bwqs Datasheet - Page 17

• Manufacturer Part Number: sta559bwqs
• Description: 5-v, 2-a, 2.1-channel High-efficiency Digital Audio System With Qsound Qhd?
• Manufacturer: STMicroelectronics

STA559BWQS
Table 7.
1. Refer to Test Circuit 1
2. Refer to Test Circuit 2
Symbol
THD+N
PSSR
X
SNR
UVL
Ilim
t
Isc
TALK
Po
min
η
Overcurrent limit
Under voltage protection
threshold
Output minimum pulse width
Output power BTL
Output power SE
Output power BTL
Output power SE
Output power BTL
Output power SE
Signal to noise ratio, ternary
mode
Signal to noise ratio binary
mode
Power Supply Rejection Ratio
Total harmonic
distortion + noise
Crosstalk
Peak efficiency, DDX mode
Peak efficiency, Binary modes
Short circuit protection
Electrical specifications - power Section (continued)
Parameter
Figure 3
Figure 4
No Load
THD = 1%, f = 1 kHz
THD = 10%, f = 1 kHz
THD = 1%, f = 1 kHz
THD = 10%, f = 1 kHz
R
Vcc = 9 V
f = 1 kHz
R
Vcc = 5 V
f = 1 kHz
A-weighted
Stereo DDX mode, <5 kHz
V
Audio input = dither only
DDX stereo mode,
Po = 1 W, f = 1 kHz
Stereo DDX mode, <5 kHz
One channel driven @ 1 W
Other channel measured
Po = 2 x 3 W, 4 Ω
Po = 2 x 0.7 W + 1 x 3 W, 4 Ω
RIPPLE
L
L
= 8 Ω
= 2 Ω
= 1 V RMS
Conditions
THD = 1%
THD = 10%
THD = 1%
THD = 10%
THD = 1%
THD = 10%
THD = 1%
THD = 10%
Min
2.2
2.7
20
Electrical specifications
Typ
100
3.0
3.6
3.5
2.3
0.5
0.7
4.2
5.3
0.9
1.2
4.2
5.3
1.3
0.2
30
90
80
80
90
87
3
1
Max
4.3
60
Unit
17/66
dB
dB
dB
ns
W
W
W
W
W
W
%
%
A
A
V