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| 型号： | TAS5414TDKDRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 116 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | GREEN, PLASTIC, HSSOP-36 |
| 文件页数： | 10/43页 |
| 文件大小： | 978K |
| 代理商： | TAS5414TDKDRQ1 |
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SLOS514A – FEBRUARY 2007 – REVISED JULY 2007
DESCRIPTION OF OPERATION (continued)
amplifier. If the dc offset reaches the level defined in the I2C registers for the specified time period, the
circuit triggers. By default a dc detection event does not shut the output down. The shutdown function can
be enabled or disabled via I2C. If enabled, the triggered channel shuts down, but the others remain
playing and the FAULT pin is asserted. The positive dc level and negative dc level are defined in I2C
registers and can have separate thresholds.
4. Clip Detect—The clip detect circuit alerts the user to the presence of a 100% duty-cycle PWM due to a
clipped waveform. When this occurs, a signal is passed to the CLIP_OTW pin and it is asserted until the
100% duty-cycle PWM signal is no longer present. All four channels are connected to the same
CLIP_OTW pin. Through I2C, the CLIP_OTW signal can be changed to clip-only, OTW-only, or both. A
fourth mode, used only during diagnostics, is the option to report tweeter detection events on this pin (see
the Tweeter Detection section). The microcontroller in the system can monitor the signal at the
CLIP_OTW pin and may be configured to reduce the volume to all four channels in an active
clipping-prevention circuit.
5. Overtemperature Warning (OTW) and Overtemperature Shutdown (OTSD)—By default, the
CLIP_OTW pin is set to indicate an OTW. This can be changed via I2C commands. If selected to indicate
a temperature warning, the CLIP_OTW pin is asserted when the die temperature reaches 125
°C. The
OTW has three temperature thresholds with a 10
°C hysteresis. Each threshold is indicated in I2C register
0x04 bits 5, 6, and 7. The TAS5414 and TAS5424 still function until the temperature reaches the OTSD
threshold. 155
°C, at which time the outputs are placed into Hi-Z mode and the FAULT pin is asserted. I2C
is still active in the event of an OTSD and the registers can be read for faults, but all audio ceases
abruptly. The OTSD resets at 145
°C, to allow the TAS5414/5424 to be turned back on through I2C. The
OTW is still indicated until the temperature drops below 115
°C. All temperatures are nominal values.
6. Undervoltage (UV) and Power-on-Reset (POR)—The undervoltage (UV) protection detects low voltages
on PVDD, AVDD, and CP. In the event of an undervoltage, the FAULT pin is asserted and the I2C
register is updated, depending on which voltage caused the event. Power-on-reset (POR) occurs when
PVDD drops low enough. A POR event causes the I2C to go into a high-impedance state. After the device
recovers from the POR event, the device must be re-initialized via I2C.
7. Overvoltage (OV) and Load Dump—The OV protection detects high voltages on PVDD. If PVDD
reaches the overvoltage threshold, the FAULT pin is asserted and the I2C register is updated. If the
voltage increases beyond the load dump threshold of 29 Vdc, the device shuts down and must be
restarted once the voltage returns to a safe value. After the device recovers from the
≈ load dump event,
the device must be re-initialized via I2C. The TAS5414 and TAS5424 can withstand 50-V load-dump
voltage spikes (see Figure 15). Also depicted in this graph are the voltage thresholds for normal operation
region, overvoltage operation region, and load-dump protection region. Figure 13 shows the regions of
operating voltage and the profile of the load dump event. Battery charger voltages from 25 V to 35 V can
be withstood for up to 1 hour.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5414TDKDRQ1G4 | 功能描述:音频放大器 4-Ch Auto Dig 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 |
| TAS5421EVM | 功能描述:EVAL BOARD FOR TAS5421 制造商:texas instruments 系列:- 零件状态:在售 放大器类型:D 类 输出类型:1-通道（单声道） 不同负载时的最大输出功率 x 通道数:22W x 1 @ 4 欧姆 电压 - 电源:4.5 V ~ 18 V 板类型:完全填充 使用的 IC/零件:TAS5421 所含物品:板 标准包装:1 |
| TAS5421QPWPRQ1 | 功能描述:Amplifier IC 1-Channel (Mono) Class D 16-HTSSOP 制造商:texas instruments 系列:汽车级，AEC-Q100 包装:剪切带（CT） 零件状态:有效 类型:D 类 输出类型:1-通道（单声道） 不同负载时的最大输出功率 x 通道数:22W x 1 @ 4 欧姆 电压 - 电源:4.5 V ~ 18 V 特性:静音，短路和热保护 安装类型:表面贴装 工作温度:-40°C ~ 125°C（TA） 供应商器件封装:16-HTSSOP 封装/外壳:16-TSSOP（0.173"，4.40mm 宽）裸焊盘 标准包装:1 |
| TAS5424 | 制造商:TI 制造商全称:Texas Instruments 功能描述:FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS |
| TAS5424A | 制造商:TI 制造商全称:Texas Instruments 功能描述:FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS |
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