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STA333ML 数据表(PDF) 6 Page - STMicroelectronics

部件名 STA333ML
功能描述  Sound TerminaTM 2-channel microless high-efficiency digital audio system
PDF  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA333ML 数据表(HTML) 6 Page - STMicroelectronics

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Electrical specifications
STA333ML
6/14
3.4
Electrical characteristics
The specifications given here are with the operating conditions VCC = 18 V, VDD_DIG =3.3 V,
fsw = 384 kHz, Tamb = 25° C and RL = 8 Ω, unless otherwise specified.
Table 6.
Electrical characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Po
Output power BTL
THD = 1%
16
W
THD = 10%
20
RdsON
Power Pchannel/Nchannel
MOSFET (total bridge)
ld = 1 A
180
250
m
Ω
ldss
Power Pchannel/Nchannel
leakage
Vcc = 18 V
10
µA
gP
Power Pchannel RdsON matching
ld = 1 A
95
%
gN
Power Nchannel RdsON matching ld = 1 A
95
%
ILDT
Low current dead time (static)
Resistive load, see Figure 3
510
ns
IHDT
High current dead time (dynamic)
lload = 1.5 A, see Figure 3
10
20
ns
tr
Rise time
Resistive load, seeFigure 3
810
ns
tf
Fall time
Resistive load, see Figure 3
810
ns
VCC
Supply voltage (VCC1, VCC2)
4.5
18
V
Icc
Supply current from VCC in power
down mode
PWRDN = 0
0.1
mA
Supply current from VCC in
operation
PCM input signal = -60 dBFS.
Switching frequency = 384 kHz
No LC filters
30
mA
Supply current DDX processing
(reference only)
Internal clock = 49.152 MHz
80
mA
Ilim
Overcurrent limit
Nonlinear output
2.2
3.5
4.3
A
Isc
Short circuit protection
Hi-Z output
2.7
3.8
5.0
A
UVL
Under voltage protection threshold
3.5
4.3
V
tmin
Output minimum pulse width
No load
20
30
60
ns
DR
Dynamic range
100
dB
SNR
Signal to noise ratio
A-weighted
94
dB
THD+N
Total harmonic distortion and noise Po = 1 W, f = 1 kHz
0.05
0.2
%
PSRR
Power supply rejection ratio
DDX stereo, < 5 kHz
Vripple = 1 V RMS
Audio input = dither only
80
dB
XTALK
Crosstalk
DDX stereo, < 5 kHz
One channel driven at 1 W
other channel measured
80
dB
η
Peak efficiency, DDX mode
Po = 2 x 20 W,
8
Ω
90
%



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