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PDF STA575 Data sheet ( Hoja de datos )
| Número de pieza | STA575 | |
| Descripción | 100+100W STEREO BASH POWER AMPLIFIER | |
| Fabricantes | ST Microelectronics | |
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STA575
100+100W STEREO
POWER AMPLIFIER
s MONOCHIP BRIDGE STEREO AMPLIFIER
ON BASH® ARCHITECTURE
s 80+80W OUTPUT POWER @ RL = 4/8 Ω,
THD = 0.5%
s 100+100W OUTPUT POWER @ RL = 4/8 Ω,
THD = 10%
s HIGH DYNAMIC PREAMPLIFIER INPUT
STAGES
s EXTERNAL PROGRAMMABLE FEEDBACK
TYPE COMPRESSORS
s AC COUPLED INPUT TO CLASS AB BRIDGE
OUTPUT AMPLIFIER
s PRECISION RECTIFIERS TO DRIVE THE
DIGITAL CONVERTER
FLEXIWATT27
TRANSISTOR POWER PROTECTION
s ABSOLUTE OUTPUT CURRENT LIMIT
s INTEGRATED THERMAL PROTECTION
s POWER SUPPLY OVER VOLTAGE
PROTECTION
s FLEXIWATT POWER PACKAGE WITH 27 PIN
s ON-OFF SEQUENCE/ TIMER WITH MUTE
AND STANDBY
s BASH® LICENCE REQUIRED
s PROPORTIONAL OVER POWER OUTPUT
DESCRIPTION
CURRENT TO LIMIT THE DIGITAL
CONVERTER
DataSheet4TUh.ecoSmTA575 is a fully integrated power module de-
s ABSOLUTE POWER BRIDGE OUTPUT
signed to implement a BASH® amplifier when used
in conjunction with STABP01 digital processor.
BLOCK DIAGRAM
+VS GND -VS
OUT_ PRE1 TRK_1 PWR_INP1
IN_PRE1
ATT_REL1
TRK_OUT
THRESH
ATT_REL2
IN_PRE2
+
-
∆G
COMPRESSOR
V/l
S1
PEAK/2
DETECTOR
Ict
ABSOLUTE
VALUE
BLOCK
+2
-1
OUTPUT BRIDGE
VOLTAGE
PROTECTION
SOA
DETECTOR
CD+1
OUT1+
OUT1-
CD-1
CD+
PROT.
Ict
S1
PEAK/2
DETECTOR
THERMAL
PROTECTION
TURN-
ON/OFF
SEQUENCE
STBY/MUTE
V/l
COMPRESSOR
∆G
-
+
ABSOLUTE
VALUE
BLOCK
+2
-1
OUTPUT BRIDGE
CD+2
OUT2+
OUT2-
CD-2
OUT_ PRE2 TRK_2 PWR_INP2
D01AU1263
July 2003
1/20
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et4U.com
STA575
ELECTRICAL CHARACTERISTCS (Test Condition: Vs+ = 28V, Vs- = -23V, VCD+ = 20V, VCD- = -20V, RL =
8Ω, external components at the nominal value f = 1KHz, Tamb = 25°C unless otherwise specified
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
PREAMPLIFIER AND COMPRESSOR
Vout clamp Maximum Voltage at Out_pre pin
9 11 13 Vpeak
Iin Audio input current
0.8 mA
Vcontrol Voltage at Attack_Release pin
Attenuation = 0dB
Attenuation = 6dB
Attenuation = 26dB
0
0.35 0.5 0.65
6 9 12
V
V
V
VComp_ Input voltage range for the
Th compression
-5 -1 V
Zth Input impedance of Threshold pin
100 KΩ
Voffset Output Offset at Out_pre pin with: VCRT= 0V; Attenuation = 0dB
VCRT= 0.5V; Attenuation = 6dB
VCRT= 9V; Attenuation = 26dB
-15
-250
-1000
15 mV
250 mV
450 mV
THD Distortion at Out_pre:
VCRT= 0V; Attenuation = 0dB
VCRT= 0.5V; Attenuation = 6dB
VCRT= 9V; Attenuation = 26dB
0.01 0.1
0.5
2
%
%
%
EN Noise at Out_pre pin :
VCRT= 0V; Attenuation = 0dB
VCRT= 0.5V; Attenuation = 6dB
VCRT= 9V; Attenuation = 26dB
10(2)
50
60
µV
µV
µV
Ict Attack time current at pin
Attack_release
DataSheet4U.com
1. This value is due to the thermal noise of the external resistors Rr and Ri.
TRACKING PARAMETERS
0.5 1.5 3 mA
Gtrk Tracking reference voltage gain
13 14 15
V
Vtrk_out Tracking ref. output voltage
0 20
V
Itrk_out Current capability
5 6 7 mA
Ztrk_in Input impedance (TRK1/2)
1 MΩ
OUTPUT BRIDGE
Gout Half Output bridge gain
5.5 6 6.5 dB
Gch Output bridge differential gain
11 12 13 dB
∆Gch Output bridges gain mismatch
-0.5 0.5 dB
Pout Continuous Output Power
THD = 0.5%
THD = 10%
75 80
95 100
W
W
THD = 10%; RL= 4Ω; VCD+ = 16V;
VCD- = -16V; VS+ = 22V; VS- = -22V
90
100
W
THD Total harmonic distortion of the
output bridge
Po = 5W
f = 20Hz to 20KHz; Po = 50W
0.01 0.1
0.2
%
%
VOff Output bridge D.C. offset
-70 70 mV
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Figure 4. Power protection threshold
STA575
Figure 5. Protection current behaviour
Ids m(A)
7
6
Ilim = 6A
Standby
4 Pd_M ax =48W
2 NoOrpmearlatLiiomnitation
10 20 30
Pd_reg = 25W
40 50
Vds (V
Iprot(mA)
20
10
Iprot slope=0.4mA/W
D01AU1268 10 20 30 40 50 60
Pd(W)
Figure 6. Test Circuit for STA575 Stand-alone
et4U.com
C17 C5 R7 R11
R3 C7 R9
C1
INPUT1
R1
OUT_PRE1
TRK_1 PWR_INP1
Da8taSh9 eet4U.com10
IN_PRE1
74
R5 ATT_REL1
C3
3
5
OUT1+
OUT1-
5V
R13
CD+
+VS
C12
R16 CD+1
CD+
R17 CD+2
R24
+VS
C14 C10
GND
C13
-VS
D1
CD-
R22 C15
TRK-OUT
R20
PROT
R19
THRESH
R18
C11
-VS
-VS
CD-1
CD-2
TRK-OUT
PROT
THRESH
6
15
22
14
13
27
1
2
26
16
12
17
21
18
PWR_INP2 TRK_2
STBY/
11 MUTE
R14
MUTE STBY
C9 R15
OUT2+
24
23
OUT2-
C4
25
ATT_REL2 R6
IN_PRE2
20
19 R2
OUT_PRE2
INPUT2
C2
R10 C8
R4
R12 R8 C6
C16
D01AU1267
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| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet STA575.PDF ] | |
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