參數(shù)資料
型號(hào)： TDA7566
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 60 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25
封裝： ROHS COMPLIANT, FLEXIWATT-25
文件頁(yè)數(shù)： 7/29頁(yè)
文件大?。?/td> 364K
代理商： TDA7566
TDA7566
Diagnostics functional description
Doc ID 9801Rev 5
an I2C reading. This is to ensure continuous diagnostics throughout the car-radio
operating time.
–
To check the status of the device a sampling system is needed. The timing is
chosen at microprocessor level (over half a second is recommended).
Figure 22.
Restart timing without diagnostic enable (Permanent)
each 1 ms time, a sampling of the fault is done
Figure 23.
Restart timing with diagnostic enable (Permanent)
4.3
Output DC offset detection
Any DC output offset exceeding ±2 V are signalled out. This inconvenient might occur as a
consequence of initially defective or aged and worn-out input capacitors feeding a DC
component to the inputs, so putting the speakers at risk of overheating.
This diagnostic has to be performed with low-level output AC signal (or Vin = 0).
The test is run with selectable time duration by microprocessor (from a "start" to a "stop"
command):
START = Last reading operation or setting IB1 - D5 - (OFFSET enable) to 1
STOP = Actual reading operation
Excess offset is signalled out if persistent throughout the assigned testing time. This feature
is disabled if any overloads leading to activation of the short-circuit protection occurs in the
process.
t
1-2mS
1mS
Overcurrent and short
circuit protection intervention
(i.e. short circuit to GND)
Short circuit removed
Out
t
Overcurrent and short
(i.e. short circuit to GND)
Short circuit removed
1mS
100mS
1mS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7566_06 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4x40W multifunction quad power amplifier with built-in diagnostics features
TDA7566_10 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 x 40 W multifunction quad power amplifier with built-in diagnostics features
TDA7567PD 功能描述:音頻放大器 4 x 50W Multi Quad Built-in Diagnostic 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
TDA7567PDTR 功能描述:音頻放大器 4 x 50W Multi Quad Built-in Diagnostic 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
TDA7569BLV 功能描述:Amplifier IC 4-Channel (Quad) Class AB 27-Flexiwatt (Vertical) 制造商:stmicroelectronics 系列:- 包裝:管件 零件狀態(tài):有效 類型:AB 類 輸出類型:4-通道（四路） 不同負(fù)載時(shí)的最大輸出功率 x 通道數(shù):50W x 4 @ 4 歐姆 電壓 - 電源:6 V ~ 18 V 特性:靜音，短路和熱保護(hù) 安裝類型:通孔 工作溫度:-40°C ~ 105°C（TA） 供應(yīng)商器件封裝:27 Flexiwatt（垂直） 封裝/外殼:27 Flexiwatt（成型引線） 標(biāo)準(zhǔn)包裝:17
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