sta381bws STMicroelectronics, sta381bws Datasheet - Page 23
sta381bws
Manufacturer Part Number
sta381bws
Description
Sound Terminal 2.1-channel High-efficiency Digital Audio System Sound Terminal 2.1-channel High-efficiency Digital Audio System
Manufacturer
STMicroelectronics
Datasheet
1.STA381BWS.pdf
(168 pages)
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STA381BWS
3.5
Table 7.
1. Refer to
2. Limit current if the register overcurrent warning detect adjustment bypass is enabled. When disabled, refer to the Isc.
3.
Symbol
THD+N Total harmonic distortion + noise
R
X
SNR
UVL
Idss
I
I
Ilim
t
DR
dsON
gN
Po
gP
LDT
TALK
The related THD can be defined through appropriate DRC settings (see section:
min
vcc
t
η
t
r
f
Output power BTL
Output power SE
Output power SE R
Power Pchannel/Nchannel MOSFET
Power Pchannel R
Power Nchannel R
Power Pchannel/Nchannel leakage
Low current dead time (static)
Rise time
Fall time
Supply current from Vcc in power-down PWRDN = 0
Supply current from Vcc in operation
Overcurrent limit
Undervoltage protection
Output minimum pulse width
Dynamic range
Signal to noise ratio, ternary mode
Signal to noise ratio binary mode
Crosstalk
Peak efficiency, FFX mode
Figure 3: Test
Electrical specifications for the power section
The specifications given in this section are valid for the operating conditions: V
f = 1 kHz, f
Electrical specifications - power section
circuit.
Parameter
sw
= 384 kHz, T
dsON
dsON
L
= 4 Ω
matching
matching
amb
Doc ID 018937 Rev 2
= 25° C and R
Digital limited
l
l
l
Resistive load
Resistive load
Resistive load
PCM Input signal = -60 dBfs,
Switching frequency = 384 kHz,
No LC filters
(2)
No load
A-weighted
A-weighted
FFX stereo mode, Po = 1 W,
f = 1 kHz,
FFX stereo mode,
<5 kHz, one channel driven at
1 W and other channel
measured
Po = 2 x 20 W
into 8 Ω
d
d
d
Digital limited
Digital limited
= 1.5 A
= 1.5 A
= 1.5 A
Conditions
L
(3)
= 8 Ω, unless otherwise specified.
(3)
(3)
(1)
(1)
(1)
4.3:
STCompressorTM)
Electrical specifications
Min
95
95
20
4
Typ
120
100
100
0.1
3.5
0.2
90
20
10
10
52
30
80
90
5
9
8
5
CC
Max Unit
= 18 V,
4.3
6.5
10
15
18
18
60
60
1
23/168
mΩ
mA
µA
µA
dB
dB
dB
dB
ns
ns
ns
ns
W
%
%
%
%
A
V
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