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参数资料
| 型号： | TAS5101IDAPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO32 |
| 封装： | POWERPAD, PLASTIC, MO-153, HTSSOP-32 |
| 文件页数： | 12/14页 |
| 文件大小： | 185K |
| 代理商： | TAS5101IDAPR |
TAS5101
SLES039 – JUNE 2002
7
www.ti.com
device operation
power sequences
system power-up/power-down sequencing
The recommended power-up/power-down sequence is shown in Figure 3. For proper operation the RESET
signal should be kept LOW when both DVDD and output power (PVDDA1, PVDDA2, PVDDB1, and PVDDB2)
are being applied. The RESET signal should remain LOW for at least 1 ms after output power is applied.
> 1 ms
DVDD
PVDDA1
PVDDA2
PVDDB1
PVDDB2
RESET/HiZ
> 1 ms
> 100 ms
NOTE: This power-up/power-down sequence will ensure that there are no device reliability issues. However, audio artifacts during power cycling
may occur (see TAS5101_SE Application Report (SLEA001) for more information).
Figure 2. Power-Up/Power-Down Sequence
RESET function
The device is put into a reset condition when the (active low) RESET signal is asserted. While in the reset state,
the input H-bridge control signals consisting of PWM_AP, PWM_AM, PWM_BP, and PWM_BM are ignored, and
the H-bridge MOSFETs are placed in a state where OUTPUTA and OUTPUTB are both low. Asserting the
RESET signal low also causes the short circuit protection latch to be reset. The RESET and HiZ signals are
normally connected to the VALID signal from the TAS5010, when used in a single-ended configuration.
HiZ function
The HiZ function places the output MOSFETs in a high-impedance state when this function is asserted by
placing pin 13 at logic low. This function is usually used in conjunction with the RESET function during power
on and off to reduce or eliminate “pops and clicks” associated with powering the amplifier.
reinitialization sequence
Proper initial conditions for this device include asserting the RESET and HiZ signals until the reset operation
has completed (1 ms). Additionally, when using this device with the TAS5010 controller, this function can be
accomplished by asserting the reset pin on the TAS5010 during the reset sequence (see Figure 3).
audio application considerations
power supply decoupling
Power supply decoupling and layout optimization information should be obtained by following the detailed
information in the evaluation module user’s guide, SLEA006.
optimal power transfer for H-bridge
The TAS5101 is a power H-bridge that is designed to deliver 2
× 15 W/rms into loads of 4 in a single-ended
configuration. Rather than requiring the usual heatsink, the package is designed to deliver this wattage by
careful layout as described in the application note SLAA117. Careful attention must be given to the value of the
high-voltage power supply level for a given load resistance. See recommended operating conditions.
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相关代理商/技术参数 |
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| TAS5101IDAPRG4 | 功能描述:音频放大器 Stereo Dig Amp Power Stage 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 |
| TAS5102 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20-W/15-W STEREO DIGITAL AMPLIFIER POWER STAGE |
| TAS5102_1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20-W/15-W STEREO DIGITAL AMPLIFIER POWER STAGE |
| TAS5102DAD | 功能描述:音频放大器 20W Stereo PWM Inp Pwr Stage 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 |
| TAS5102DADG4 | 功能描述:音频放大器 20W Stereo PWM Input Pwr Stage 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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