TDF8544
NXP Semiconductors
I2C-bus controlled 4 50 W power amplifier
13.2 Beep input
Circuit to amplify the beep signal from the microcontroller to all four amplifiers with gain
set to 0 dB.
ACGND
TDF8544
2.2 ꢀF
0.22 mF
1.7 kW
from microcontroller
100 W
47 pF
001aan049
Fig 35. Beep input circuit
13.3 Clip detection on pin STB
8.5 V
10 kΩ
4.7 kΩ
18 kΩ
10 kΩ
STB
MICRO-
CONTROLLER
TDF8544
3.3 V
switch
001aan050
Fig 36. Circuit for testing clip detection on pin STB
14. Test information
14.1 Quality information
This product has been qualified in accordance with the Automotive Electronics Council
(AEC) standard Q100 - Failure mechanism based stress test qualification for integrated
circuits, and is suitable for use in automotive applications.
TDF8544
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 29 August 2011
47 of 54
NXP [ NXP ]
