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参数资料
| 型号： | TDA7563A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM27 |
| 封装： | ROHS COMPLIANT, FLEXIWATT-27 |
| 文件页数： | 7/35页 |
| 文件大小： | 523K |
| 代理商： | TDA7563A |
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TDA7563A
Diagnostics functional description
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.
Thresholds for short across the speaker/open speaker
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.
Thresholds for line-drivers
3.2
Permanent diagnostics
Detectable conventional faults are:
–
Short to GND
–Short to Vs
–
Short across the speaker
The following additional features are provided:
–
Output offset detection
The TDA7563A has 2 operating statuses:
1.
RESTART mode. The diagnostic is not enabled. Each audio channel operates
independently from each other. If any of the a.m. faults occurs, only the channel(s)
interested is shut down. A check of the output status is made every 1 ms (Figure 25).
Restart takes place when the overload is removed.
2.
DIAGNOSTIC mode. It is enabled via I2C bus and self activates if an output overload
(such to cause the intervention of the short-circuit protection) occurs to the speakers
outputs. Once activated, the diagnostics procedure develops as follows (Figure 26):
–
To avoid momentary re-circulation spikes from giving erroneous diagnostics, a
check of the output status is made after 1ms: if normal situation (no overloads) is
detected, the diagnostic is not performed and the channel returns back active.
–
Instead, if an overload is detected during the check after 1 ms, then a diagnostic
cycle having a duration of about 100 ms is started.
–
After a diagnostic cycle, the audio channel interested by the fault is switched to
RESTART mode. The relevant data are stored inside the device and can be read
by the microprocessor. When one cycle has terminated, the next one is activated
S.C. across Load
x
Open Load
0V
1.5
Ω
70
Ω
Infinite
x
Normal Operation
0.5
Ω
130
Ω
D01AU1254
D01AU1252
S.C. across Load
x
Open Load
0
Ω
4.5
Ω
200
Ω
infinite
x
Normal Operation
1.5
Ω
400
Ω
相关PDF资料 |
PDF描述 |
|---|---|
| TDA7563BH | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| TDA7563BPDTR | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| TDA7563BPD | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| TDA7563B | 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| TDA7563PDTR | 46 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7563AH | 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 |
| TDA7563APD | 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 |
| TDA7563APDTR | 功能描述:音频放大器 4x28V 4Ohm 14.4V High Eff Quad Amp 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 |
| TDA7563ASM | 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 |
| TDA7563ASMTR | 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 |
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