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參數資料
| 型號： | TDA7564 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 46 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | FLEXIWATT-25 |
| 文件頁數： | 2/20頁 |
| 文件大?。?/td> | 269K |
| 代理商： | TDA7564 |
Obsolete
Product(s)
- Obsolete
Product(s)
TDA7564
10/20
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:
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:
If the Line-Driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the same thresholds will
change as follows:
b) 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 TDA7564 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 (fig. 19). 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 di-
agnostics procedure develops as follows (fig. 20):
– To avoid momentary re-circulation spikes from giving erroneous diagnostics, a check of the output sta-
tus 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.
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
1.75
45
Infinite
x
Normal Operation
0.5
85
D01AU1327
D02AU1340
S.C. across Load
x
Open Load
0
7
180
infinite
x
Normal Operation
2
330
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|---|---|
| TDA7565 | 40 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| TDA7566 | 60 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25 |
| TDA7567PDTR | AUDIO AMPLIFIER, PDSO36 |
| TDA7567PD | AUDIO AMPLIFIER, PDSO36 |
| TDA7571 | 250 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TDA7564B | 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D RoHS:否 制造商:STMicroelectronics 產品: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 |
| TDA7564BH | 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D RoHS:否 制造商:STMicroelectronics 產品: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 |
| TDA7564BPD | 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D RoHS:否 制造商:STMicroelectronics 產品: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 |
| TDA7564BPDTR | 功能描述:音頻放大器 4 x 50W Multi Quad Power Amplifer D RoHS:否 制造商:STMicroelectronics 產品: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 |
| TDA7565 | 功能描述:音頻放大器 Quad Power Amplifier Built-in Volt Conv RoHS:否 制造商:STMicroelectronics 產品: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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