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| 型号： | TAS5709PHPG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封装： | 7 X 7 MM, GREEN, PLASTIC, HTQFP-48 |
| 文件页数： | 27/60页 |
| 文件大小： | 1210K |
| 代理商： | TAS5709PHPG4 |
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www.ti.com ..................................................................................................................................... SLOS599A – NOVEMBER 2008 – REVISED SEPTEMBER 2009
5.
Configure remaining registers
6.
Exit shutdown (sequence defined below).
Normal Operation
The following are the only events supported during normal operation:
(a) Writes to master/channel volume registers
(b) Writes to soft mute register
(c) Enter and exit shutdown (sequence defined below)
(d) Clock errors and rate changes
Note: Events (c) and (d) are not supported for 240ms+1.3*Tstart after trim following AVDD/DVDD powerup
ramp (where Tstart is specified by register 0x1A).
Shutdown Sequence
Enter:
1.
Ensure I2S clocks have been stable and valid for at least 50ms.
2.
Write 0x40 to register 0x05.
3.
Wait at least 1ms+1.3*Tstop (where Tstop is specified by register 0x1A).
4.
Once in shutdown, stable clocks are not required while device remains idle.
5.
If desired, reconfigure by ensuring that clocks have been stable and valid for at least 50ms before
returning to step 4 of initialization sequence.
Exit:
1.
Ensure I2S clocks have been stable and valid for at least 50ms.
2.
Write 0x00 to register 0x05 (exit shutdown command may not be serviced for as much as 240ms
after trim following AVDD/DVDD powerup ramp).
3.
Wait at least 1ms+1.3*Tstart (where Tstart is specified by register 0x1A).
4.
Proceed with normal operation.
Powerdown Sequence
Use the following sequence to powerdown the device and its supplies:
1.
If time permits, enter shutdown (sequence defined above); else, in case of sudden power loss,
assert PDNZ=0 and wait at least 2ms.
2.
Assert RESETZ=0.
3.
Drive digital inputs low and ramp down PVDD supply as follows:
Drive all digital inputs low after RESETZ has been low for at least 2us.
Ramp down PVDD while ensuring that it remains above 8V until RESETZ has been low for at
least 2us.
4.
Ramp down AVDD/DVDD while ensuring that it remains above 3V until PVDD is below 6V and
that it is never more than 2.5V below the digital inputs.
Copyright 2008–2009, Texas Instruments Incorporated
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相关代理商/技术参数 |
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| TAS5709PHPR | 功能描述:音频放大器 20W Stereo I2S input 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 |
| TAS5709PHPRG4 | 功能描述:音频放大器 20W Stereo I2S input 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 |
| TAS5710 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20-W STEREO DIGITAL AUDIO POWER AMPLIFIER |
| TAS5710EVM | 功能描述:音频 IC 开发工具 TAS5710EVM 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 |
| TAS5710PHP | 功能描述:音频放大器 20W St Closed-loop I2S Audio 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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