sta540san STMicroelectronics, sta540san Datasheet - Page 22

• Manufacturer Part Number: sta540san
• Description: 4 X 10-watt Dual/quad Power Amplifier
• Manufacturer: STMicroelectronics

General structure
8.8
22/26
Handling of the diagnostic information
As different diagnostic information is available at the same pin (clipping detection, output
fault, thermal proximity), the signal must be handled correctly in order to discriminate the
event. This could be done by taking into account the different timing of the diagnostic output
during each case.
Normally, clip-detector signalling under faulty conditions produces a low level at pin 10.
Based on this assumption, an interface circuitry to differentiate the information is shown in
Figure
Figure 32. Waveforms
Figure 33. Interface circuit diagram
33.
WAVEFORM
WAVEFORM
ST_BY PIN
VOLTAGE
OUTPUT
Vpin 10
Vs
10
Doc ID 18306 Rev 1
D05AU1604_bc
CLIPPING
SHORT TO GND
OR TO Vs
PROXIMITY
THERMAL
STA540SAN
t
t
t