STA540
7W x 4 QUAD AMPLIFIER
TARGET SPECIFICATIONS
1
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FEATURES
OUTPUT POWER CAPABILITY 7W x 4
MINIMUM EXTERNAL COMPONENTS
COUNT:
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN 20dB
ST-BY FUNCTION (CMOS COMPATIBLE)
NO AUDIBLE POP DURING ST-BY
OPERATIONS
DIAGNOSTIC FACILITIES
– CLIP DETECTOR
– OUT TO GND SHORT
– OUT TO VS SHORT
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY
Figure 1. Packages
Clipwatt 19
PSSO36 (slug-up)
Table 1. Order Codes
Part Number
STA540SA
STA540P
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Package
Clipwatt 19
PSSO36 (slug-up)
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VERY INDUCTIVE LOADS
ESD
2
DESCRIPTION
1.1 Protections
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OUPUT AC/DC SHORT CIRCUIT
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SOFT SHORT AT TURN-ON
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The amplifier is a class AB Audio amplifier assem-
bled in the Clipwatt19 package designed for high
quality sound application.
The STA540SA is 4 Single ended amplifier with in-
tegrated in the device the Short Circuit Protection,
the Thermal Protection and the Diagnostics Func-
tions.
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER
Figure 2. Block Diagram (referred to Clipwatt pin numbers)
17
3
1
4
2
9
5
18
15
19
12
16
8
10
11
Rev. 1
1/6
DREW LEE +86-13537087568
SEMTECH [ SEMTECH CORPORATION ]
