参数资料
型号: TDF8554J/N4
厂商: NXP SEMICONDUCTORS
元件分类: 音频/视频放大
英文描述: 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM37
封装: PLASTIC, SOT725-1, 37 PIN
文件页数: 42/56页
文件大小: 597K
代理商: TDF8554J/N4
TDF8554J
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 31 August 2011
47 of 56
NXP Semiconductors
TDF8554J
4
45 W power amplifier with multiple voltage regulator
14. Application information
(1) Connect good quality decoupling capacitors close to supply pins to suppress peak voltages on the supply line which can occur
if several channels are shorted to VP simultaneously and protection activated. 0805 case size capacitors (X7R material,
220 nF) connected close to each of the supply pins have given good results.
(2) ACGND capacitor value must be close to 4
input capacitance; 4 470 nF can be used instead of 2.2 F.
(3) For EMC reasons, a 10 nF capacitor can be connected between each amplifier output and ground.
Fig 30. Test and application diagram
aaa-000381
Vreg2
40 ms
BACKUP
SWITCH
ENABLE
LOGIC
STANDBY/ MUTE
I2C-BUS
INTERFACE
CLIP DETECT/ DIAGNOSTIC
REFERENCE
VOLTAGE
TEMPERATURE &
LOAD DUMP
PROTECTION VOLTAGE
REGULATOR
REGULATOR 1
REGULATOR 3
REGULATOR 2
REGULATOR 4
REGULATOR 5
SWITCH 1
SWITCH 2
MUTE
PROTECTION/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
TEMPERATURE & LOAD
DUMP PROTECTION
AMPLIFIER
MUTE
35
28
27
26
20
6
25
9
7
5
3
17
19
21
23
16
8
13
SGND
SVR
IN4
IN3
IN2
IN1
STB
SCL
SDA
RESCAP
VP
BUCAP
ACGND
PGND1 PGND2/TAB PGND3 PGND4
10
14
15
12
11
22
4
2
1
18
24
32
29
34
33
31
30
37 REG2
REG1
10 μF
(50 V)
100 nF
REG3
REG4
REG5
SW1
SW2
RST
VP1
DIAG
OUT1+
OUT1-
OUT2+
OUT2-
OUT3+
OUT3-
OUT4+
OUT4-
VP2
microcontroller
14.4 V
(1)
(2)
aerial
motor
amplifiers
display
mechanical
drive
mechanical
digital
audio
microcontroller
GND
36
VP
1000 μF
(16 V)
(1)
220 nF
220 μF
(16 V)
14.4 V
(1)
220 nF
47 nF
10 μF
(50 V)
100 nF
10 μF
(50 V)
100 nF
10 μF
(50 V)
100 nF
10 μF
(50 V)
100 nF
10 μF
(50 V)
100 nF
10 μF
(50 V)
10 kΩ
100 nF
RS
470 nF
RS
470 nF
RS
470 nF
RS
470 nF
2.2 μF
(4 × 470 nF)
10 μF
TDA8554J
220
nF
220
nF
2200 μF
(16 V)
16 dB
26 dB
16 dB
26 dB
16 dB
26 dB
16 dB
26 dB
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