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STA335W 数据表(PDF) 9 Page - STMicroelectronics

部件名 STA335W
功能描述  2.0-channel high-efficiency digital audio system
PDF  43 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA335W 数据表(HTML) 9 Page - STMicroelectronics

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STA335W
Electrical specifications
9/43
3.5
Electrical specifications for the power section
The specifications given in this section are valid for the operating conditions: VCC =18V,
f= 1 kHz, fsw = 384 kHz, Tamb = 25° C and RL = 8 Ω, unless otherwise specified.
Table 7.
Electrical specifications - power section
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 = 1.5 A
180
250
m
Ω
gP
Power Pchannel RdsON matching
ld = 1.5 A
95
%
gN
Power Nchannel RdsON matching
ld = 1.5 A
95
%
Idss
Power Pchannel/Nchannel leakage
VCC = 20 V
10
μA
ILDT
Low current dead time (static)
Resistive load(1)
8
15
ns
IHDT
High current dead time (dynamic)
Iload = 1.5 A(1)
15
30
ns
tr
Rise time
Resistive load(1)
10
18
ns
tf
Fall time
Resistive load(1)
10
18
ns
Vcc
Supply voltage operating voltage
5
26
V
Ivcc
Supply current from Vcc in power down
PWRDN = 0
0.1
1
mA
Supply current from Vcc in operation
PCM Input signal = -
60 dBfs,
Switching frequency
= 384 kHz,
No LC filters
52
60
mA
Ivdd
Supply current FFX processing (reference
only)
Internal clock =
49.152 MHz
55
70
mA
Ilim
Overcurrent limit
(2)
3.0
3.8
A
Isc
Short circuit protection
Hi-Z output
4.0
4.2
A
UVL
Under voltage protection
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, ternary mode
A-Weighted
100
dB
Signal to noise ratio binary mode
90
dB
PSSR
Power supply rejection ratio
FFX stereo mode,
<5 kHz
VRIPPLE = 1 V RMS
Audio input =
dither only
80
dB
THD+N
Total harmonic distortion + noise
FFX stereo mode,
Po = 1 W
f=1kHz
0.2
%



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