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參數(shù)資料
| 型號： | TDA7575BPD |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封裝： | ROHS COMPLIANT, SOP-36 |
| 文件頁數(shù)： | 16/32頁 |
| 文件大?。?/td> | 487K |
| 代理商： | TDA7575BPD |
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TDA7575B
Diagnostics functional description
Doc ID 14103 Rev 2
7
Diagnostics functional description
7.1
Turn-on diagnostic
It is activated at the turn-on (stand-by out) under I2C bus request. Detectable output faults are:
–
Short to GND
–Short TO Vs
–
Short across the speaker
–
Open speaker
To verify if any of the above misconnections are in place, a subsonic (inaudible) current
pulse (Figure 29) is internally generated, sent through the speaker(s) and sunk back. The
Turn On diagnostic status is internally stored until a successive diagnostic pulse is
requested (after a I2C reading).
If the "stand-by out" and "diag. enable" commands are both given through a single
programming step, the pulse takes place first (power stage still in stand-by mode, low,
outputs = high impedance).
Afterwards, when the Amplifier is biased, the PERMANENT diagnostic takes place. The
previous Turn On state is kept until a short appears at the outputs.
Figure 29.
Turn-on diagnostic: working principle
out) with and without Turn-on diagnostic.
Figure 30.
SVR and output behavior - case 1: without turn-on diagnostic
CH-
CH+
Isource
Vs~5V
Isink
t (ms)
I (mA)
Isink
Isource
~100mS
Measure time
Bias (power amp turn-on)
t
Diagnostic Enable
(Permanent)
Permanent diagnostic
acquisition time (100mS Typ)
Permanent Diagnostics data (output)
permitted time
I2CB DATA
Vsvr
Out
FAULT
event
Read Data
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|---|---|
| TDA7575BPDTR | 功能描述:音頻放大器 2 x 75W Multifunct Dual-Bridge Pwr Amp 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 |
| TDA7575PD | 功能描述:音頻放大器 INFOTAINMENT S PWR 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 |
| TDA7575PDTR | 功能描述:音頻放大器 INFOTAINMENT S PWR 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 |
| TDA7576B | 制造商:STMicroelectronics 功能描述:Dual bridge MOSFET power amplifier for 24V systems |
| TDA7577BLV | 功能描述:Amplifier IC 2-Channel (Stereo) 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:2 通道（立體聲） 不同負(fù)載時的最大輸出功率 x 通道數(shù):45W x 2 @ 4 歐姆 電壓 - 電源:6 V ~ 18 V 特性:靜音，短路保護(hù)，待機(jī) 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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