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| 型号： | TAS5701PAPG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| 封装： | 10 X 10 MM, GREEN, PLASTIC, HTQFP-64 |
| 文件页数： | 13/27页 |
| 文件大小： | 638K |
| 代理商： | TAS5701PAPG4 |
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SLOS559A – JUNE 2008 – REVISED AUGUST 2010
www.ti.com
Table 2. Gain Control
GAIN_1
GAIN_0
CHANNEL GAIN (dB)
0
1
6
1
0
12
1
18
DEVICE PROTECTION SYSTEM
The TAS5701 contains advanced protection circuitry carefully designed to facilitate system integration and ease
of use, as well as to safeguard the device from permanent failure due to a wide range of fault conditions such as
short circuits, overtemperature, and undervoltage. The TAS5701 responds to a fault by immediately setting the
power stage in a high-impedance (Hi-Z) state and reporting the error on the FAULT pin (FAULT = 0); the device
automatically recovers when the fault condition has been removed.
Short-Circuit Protection
The device has independent, fast-reacting current detectors on all high-side and low-side power-stage FETs. The
detector outputs are closely monitored by a protection system. If a high-current condition situation exists, i.e., the
power stage outputs are shorted, the protection system triggers a latching shutdown, resulting in the power stage
being set in the high-impedance (Hi-Z) state and FAULT going low. Overcurrent protection is not independent for
half-bridges A and B and, respectively, C and D. That is, if the bridge-tied load between half-bridges A and B
causes an overcurrent fault, half-bridges A, B, C, and D are shut down.
Overtemperature Protection
If the device junction temperature exceeds 150°C (nominal), the device is put into thermal shutdown, resulting in
all half-bridge outputs being set in the high-impedance (Hi-Z) state and FAULT going low. Once the temperature
decreases 30°C (typical), the device resumes normal operation.
Undervoltage Protection (UVP) and Power-On Reset (POR)
The UVP and POR circuits of the TAS5701 fully protect the device in any power-up/down and brownout situation.
While powering up, the POR circuit resets the protection circuitry and ensures that all circuits are fully operational
when the VDD and GVDD_X supply voltages reach 9.6 V (typical). Although GVDD_x and VDD pins are
independently monitored, a supply voltage drop below the UVP threshold on any VDD or GVDD_x pin results in
all outputs immediately being set in the high-impedence (Hi-Z) state and FAULT pin being asserted low. The
device automatically resumes operation when all supply voltages have increased above the UVP threshold.
Spacer
REVISION HISTORY
Changes from Original (June 2008) to Revision A
Page
Replaced the with the DISSIPATION RATINGS table Thermal Information table ............................................................... 8
20
Copyright 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): TAS5701
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相关代理商/技术参数 |
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| TAS5701PAPR | 功能描述:音频放大器 20W stereo Dig Audio Pwr 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 |
| TAS5701PAPRG4 | 功能描述:音频放大器 20W stereo Dig Aud Pwr 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 |
| TAS5704 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20-W Stereo Digital Audio Power Amplifier With Feedback |
| TAS5704EVM | 功能描述:音频 IC 开发工具 TAS5704EVM Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TAS5704PAP | 功能描述:音频放大器 20W stereo Dig Aud Pwr 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 |
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