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參數(shù)資料
| 型號： | TDA8592J |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 87 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| 封裝： | POWER, PLASTIC, SOT-767-1, DIL-BENT-SIL, 27 PIN |
| 文件頁數(shù)： | 31/32頁 |
| 文件大小： | 199K |
| 代理商： | TDA8592J |
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9397 750 14846
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 3 June 2005
8 of 32
Philips Semiconductors
TDA8592J
I2C-bus controlled 4
× 50 W power amplier
than 150 mA. Figure 3 shows which AC-loads are detected at different output voltages.
For example, if a load is detected at an output voltage of 2 V (peak), the load is less than
3.5
. If no load is detected, the output impedance is more than 13 .
7.14 Load detection procedure
Procedure:
1. At start-up, enable the AC or DC-load detection by setting D1 of instruction byte IB1 to
logic 1.
2. After 250 ms the DC-load is detected and the mute is released. This is inaudible and
can be implemented each time the IC is powered on.
3. When the amplier start-up cycle is completed (after 1.5 s), apply an AC signal to the
input, and DC-load bits D5 of each data byte should be read and stored by the
microcontroller.
4. After at least 3 periods of the input signal, the load status can be checked by reading
AC-detect bits D4 of each data byte.
The AC-load peak current counter can be reset by setting bit D1 of instruction byte IB1 to
logic 0 and then to logic 1. Note that this will also reset the DC-load detection bits D5 in
each data byte.
7.15 Low headroom protection
The normal DC output voltage of the amplier is set to half the supply voltage and is
related to the voltage on pin SVR. An external capacitor is connected to pin SVR to
suppress power supply ripple. If the supply voltage drops (at vehicle engine start), the DC
output voltage will follow slowly due to the affect of the SVR capacitor.
(1) Io(peak) < 150 mA.
(2) Io(peak) > 550 mA.
Fig 3.
Tolerance of AC detected load as a function of output voltage
001aaa587
10
102
Zo(load)
(
)
1
Vo(peak) (V)
08
6
24
(2)
no load present
load present
undefined
(1)
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相關代理商/技術(shù)參數(shù) |
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|---|---|
| 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA8594J/N1,112 | 制造商:NXP Semiconductors 功能描述: |
| TDA8594J/N1S | 功能描述:音頻放大器 PWR AMP 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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