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STA350B Datasheet(PDF) 18 Page - STMicroelectronics

Part # STA350B
Description  2.1-channel high-efficiency digital audio system Sound TerminalR
PDF  94 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA350B Datasheet(HTML) 18 Page - STMicroelectronics

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Electrical specifications
STA350B, STA350BW
18/94
DocID018572 Rev 7
3.5
Electrical specifications for the power section
The specifications given in this section are valid for the operating conditions: VCC =24 V,
f= 1kHz, fsw = 384 kHz, Tamb = 25° C and RL = 8 Ω, unless otherwise specified.
Table 6. Electrical specifications - power section
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Po
Continuous output power, BTL, ternary
mode
THD = 1%
27
W
THD = 10%
36
Continuous output power SE, binary
mode,
RL = 4 Ω
THD = 1%
12
W
THD = 10%
15.5
RdsON
Power P-channel/N-channel MOSFET
(total bridge)
ld = 1.5 A
180
250
m
Ω
Idss
Power P-channel/N-channel leakage
VCC = 20 V
10
μA
ILDT
Low current dead time (static)
Resistive load(1)
8
15
ns
IHDT
High current dead time (dynamic)
I load(1) = 1.5 A
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
1
μA
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
4.0
A
Isc
Short-circuit protection
Hi-Z output
4.0
5.0
A
UVL
Undervoltage protection
4.3
V
OVP
Overvoltage protection
29
V
tmin
Output minimum pulse width
No load
100
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
THD+N
Total harmonic distortion + noise
FFX stereo mode,
Po = 1 W
f= 1kHz
0.09
%



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