TDF8553J NXP Semiconductors, TDF8553J Datasheet - Page 41

• Manufacturer Part Number: TDF8553J
• Description: I2C-bus controlled 4 X 50 Watt power amplifier and multiple voltage regulator
• Manufacturer: NXP Semiconductors

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TDF8553J_1
Objective data sheet
Fig 30. Printed-circuit board layout of test and application circuit showing bottom copper layout and bottom
components viewed from bottom
12.2 Beep input circuit
12.3 Noise
Beep input circuit to amplify the beep signal from the microcontroller to all 4 amplifiers
(gain = 0 dB). Note that this circuit will not affect amplifier performance.
The outputs of regulators 1 to 6 are designed to give very low noise with good stability.
The noise output voltage depends on output capacitor C
output capacitor on the noise figure.
Fig 31. Application diagram for beep input
Rev. 01 — 3 December 2008
microcontroller
4
From
50 Watt power amplifier and multiple voltage regulator
1.7 k
0.22 F
2.2 F
TDF8553J
100
ACGND
o
.
Table 17
001aai677
47 pF
shows the affect of the
TDF8553J
001aai765
© NXP B.V. 2008. All rights reserved.
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