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參數(shù)資料
| 型號： | TDA8591J |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 4 X 44 W into 4 or 4 X 75 W into 2 quad BTL car radio power amplifier |
| 中文描述： | 47 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| 封裝： | PLASTIC, DIL-BENT-SIL, 27 PIN |
| 文件頁數(shù)： | 9/36頁 |
| 文件大?。?/td> | 295K |
| 代理商： | TDA8591J |
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2002 Jan 14
9
Philips Semiconductors
Preliminary specification
4
×
44 W into 4
or 4
×
75 W into 2
quad BTL car radio power amplifier
TDA8591J
7.2
Diagnostic output (DIAG)
The internal circuit of the diagnostic open-drain output is
shown in Fig.7.
A pull-up resistor is required if the diagnostic output is
connected to a microcontroller. Figure 8 shows four
possible solutions for fault diagnosis.
Figures 8a and 8b show simple configurations. The output
offset diagnostic cannot trigger the microcontroller
because of the 4-diode stack, only the temperature,
short-circuit and dynamic distortion diagnostic will give an
input LOW level for the microcontroller.
In Fig.8c, the diagnostic output is connected to an external
level shifter. Now DIAG pin output can also generate an
input LOW level for the microcontroller.
Assuming that a microcontroller HIGH input level must be
equal to, or greater than 2 V, the following equations are
used to calculate values for resistors R1 and R2:
V
IN1
> 2 V and
where:
5 V is the pull-up supply voltage
V
d
is the forward voltage of a diode (0.6 V)
R1 and R2 are the resistors in the level shifter.
Using both equations:
thus R1 > 3.3 R2
Therefore, R1 can be 47 k
and R2 can be 10 k
.
The level shifter shown in Fig.8d is used as a 2-bit
analog-to-digital converter.
With reference to Figs 7 and 8c, the truth table in Table 1
can be made:
Table 1
Truth table.
V
IN1
5 V
4
V
d
R2
5 V
-----------------------V
4
+
d
R2
R1
×
–
×
–
=
R1
–
R2
V
d
×
×
4
5 V
2
–
----------2
>
HIGH TEMPERATURE
OR SHORT-CIRCUIT OR
DDD
OFFSET
IN1
IN2
no
no
yes
no
yes
1
0
0
1
1
0
don’t care
handbook, halfpage
MGT610
≥
1
DIAG
PGND
temperature diagnostic
short-circuit diagnostic
dynamic distortion detection
output offset diagnostic
Fig.7 Internal circuit diagnostic output pin DIAG.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8591J/N1,112 | 功能描述:音頻放大器 4 X 44 W INTO 4 OHM OR 4 X 75 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA8594 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus controlled 4 X 50 W power amplifier |
| TDA8594J | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus controlled 4 X 50 W power amplifier |
| TDA8594J/N1 | 功能描述:音頻放大器 AMPLIFIER 4X50W RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA8594J/N1,112 | 制造商:NXP Semiconductors 功能描述: |
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