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STA530 Datasheet(PDF) 11 Page - STMicroelectronics

No. de pieza STA530
Descripción Electrónicos  4 X 50W STEREO BASH POWER AMPLIFIER
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA530 Datasheet(HTML) 11 Page - STMicroelectronics

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STA530
EXTERNAL COMPONENTS
Figure 7. BASH® module SAM261 6.1 with 2 x STA530 (see Application Note AN1643)
Power - On-Off sequences:
In order to avoid damages to the SAM261 board it is important to follow these sequences:
At Power-On apply in the first the Auxiliary Power Supply (±24V) and after the Main Power Supply
(+50V), in this condition the system is in "Mute state" and it can move in "play state" with the switch present
on the pcb.
At Power-Off is better to bring the SAM module in "Mute state" and after that to follow this order: switch-
off the Main Supply Voltage (+50V) and subsequently the Auxiliary Power Supply. (±24V).
Name
Function
Value
Formula
R1 = R2 =R7 = R8
Resistor for tracking input voltage
filter
10K
R5 = R6 =R3 = R4
Resistor for tracking input voltage
filter
56K
Cac
C1 = C2 = C3 = C4
AC Decoupling capacitor
100nF
(fp = 16Hz,
Rac =100K
Ω )
R9=R10=R11=R12 Resistor for tracking input voltage filter
10K
C5 = C6 = C7 = C8 Capacitor for Tracking input
voltage filter
1nF
C9=C10=C11=C12 Dc decoupling capacitor
1
µF
R17
Bias Resistor for Stby/Mute function
10K
R18
Stby/Mute constant time resistor
30K
R19
Mute resistor
30K
C19
Capacitor for Stby/Mute resistor
2.2
µF
C17 = C18
Power supply filter capacitor
100nF
R13 = R14
Centering resistor
330
Ω, 1W
C13 = C14
Tracking rail power supply filter
680nF
R15
TRK_out
40K
R16
Protection
1K
C15 = C16
Power supply filter capacitor
470
µF , 63V
D1
Schottky diode
SB360
Cac
1
2
π fp Rac
⋅⋅
---------------------------------
=
STA530
4 x 50Watts
STA530
1 x 100Watts
2 x 50Watts
Buck
Regulator
+50VDC
8 Ohm Loads
4 Ohm Load
AudioInputs
STABP01
Controller
Dynamic Power Supply
(CD+ & CD-)
Signal Power Supply
+/-24V DC / 50
mA
+/-24V DC / 50
mA
Signal Power Supply
Lines
of
Controls
BASH fi module SAM261
6.1
STA530
4 x 50Watts
STA530
1 x 100Watts
2 x 50Watts
Buck
Regulator
+50VDC
8 Ohm Loads
4 Ohm Load
AudioInputs
STABP01
Controller
Dynamic Power Supply
(CD+ & CD-)
Signal Power Supply
+/-24V DC / 50
mA
+/-24V DC / 50
mA
Signal Power Supply
Lines
of
Controls
BASH fi module SAM261
6.1


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