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参数资料
| 型号： | TDA7564BH |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25 |
| 封装： | ROHS COMPLIANT, FLEXIWATT-25 |
| 文件页数： | 7/34页 |
| 文件大小： | 493K |
| 代理商： | TDA7564BH |
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TDA7564B
Diagnostics functional description
Doc ID 12734 Rev 3
Figure 21. SVR and output pin behavior (case 2: with turn-on diagnostic)
The information related to the outputs status is read and memorized at the end of the
current pulse top. The acquisition time is 100 ms (typ.). No audible noise is generated in the
process. As for short to GND / Vs the fault-detection thresholds remain unchanged from 26
dB to 12 dB gain setting. They are as follows:
Figure 22. Short circuit detection thresholds
Concerning short across the speaker / open speaker, the threshold varies from 26 dB to 12
dB gain setting, since different loads are expected (either normal speaker's impedance or
high impedance). The values in case of 26 dB gain are as follows:
Figure 23. Load detection thresholds - high gain setting
If the line-driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the
same thresholds will change as follows:
Figure 24. Load detection threshold - low gain setting
Bias (power amp turn-on)
permitted time
Turn-on diagnostic
acquisition time (100mS Typ)
t
Read Data
Permanent diagnostic
acquisition time (100mS Typ)
Permanent Diagnostics data (output)
permitted time
Diagnostic Enable
(Turn-on)
Turn-on Diagnostics data (output)
permitted time
I2CB DATA
Vsvr
Out
Diagnostic Enable
(Permanent)
FAULT
event
D01AU1253
S.C. to GND
x
S.C. to Vs
0V
1.8V
VS-1.8V
VS
x
Normal Operation
1.2V
VS-1.2V
S.C. across Load
x
Open Load
0V
1.5
Ω
45
Ω
Infinite
x
Normal Operation
0.5
Ω
85
Ω
AC00060
D02AU1340
S.C. across Load
x
Open Load
0
Ω
7
Ω
180
Ω
infinite
x
Normal Operation
2
Ω
330
Ω
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| TDA7564B | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7564BPD | 功能描述:音频放大器 4 x 50W Multi Quad Power Amplifer D RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7564BPDTR | 功能描述:音频放大器 4 x 50W Multi Quad Power Amplifer D RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7565 | 功能描述:音频放大器 Quad Power Amplifier Built-in Volt Conv RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7565_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Quad power amplifier with built-in voltage converter |
| TDA7565_10 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Quad power amplifier with integrated step-up converter |
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