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| 型号： | TPA3106D1VFP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 40 W, 1 CHANNEL, AUDIO AMPLIFIER, PQFP32 |
| 封装： | 7 X 7 MM, GREEN, PLASTIC, HLQFP-32 |
| 文件页数： | 15/35页 |
| 文件大小： | 1250K |
| 代理商： | TPA3106D1VFP |
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MUTE OPERATION
MUTE
FAULT
ExternalGPIO
Control
TPA3106D1
MSTR/SLV and SYNC operation
USING LOW-ESR CAPACITORS
SLOS516B – OCTOBER 2007 – REVISED MARCH 2007
The MUTE pin is an input for controlling the output state of the TPA3106D1. A logic high on this terminal
disables the outputs. A logic low on this pin enables the outputs. This terminal may be used as a quick
disable/enable of outputs when changing channels on a television or transitioning between different audio
sources.
The MUTE terminal should never be left floating. For power conservation, the SHUTDOWN terminal should be
used to reduce the quiescent current to the absolute minimum level.
The MUTE terminal can also be used with the FAULT output to automatically recover from a short-circuit event.
When a short-circuit event occurs, the FAULT terminal transitions high indicating a short-circuit has been
detected. When directly connected to MUTE, the MUTE terminal transitions high, and clears the internal fault
flag. This causes the FAULT terminal to cycle low, and normal device operation resumes if the short-circuit is
removed from the output. If a short remains at the output, the cycle continues until the short is removed.
If external MUTE control is desired, and automatic recovery from a short-circuit event is also desired, an OR gate
can be used to combine the functionality of the FAULT output and external MUTE control, see Figure 33.
Figure 33. External MUTE Control
The MSTR/SLV and SYNC terminals can be used to synchronize the frequency of the class-D output switching
when using multiple amplifiers in a single application. When the MSTR/SLV terminal is high, the output switching
frequency is determined by the selection of the resistor connected to the ROSC terminal (see ROSC Resistor
Selection). The SYNC terminal becomes an output in this mode, and the frequency of this output is also
determined by the selection of the ROSC resistor. This TTL compatible, push-pull output can be connected to
other TPA310X devices such as TPA3100D2, configured in slave mode. The output switching is synchronized to
avoid beat frequencies that could occur in the audio band when two class-D amplifiers in the same system are
switching at slightly different frequencies.
When the MSTR/SLV terminal is low, the output switching frequency is determined by the incoming square wave
on the SYNC input. The SYNC terminal becomes an input in this mode and accepts a TTL compantible square
wave from another TPA310X audio amplifier configured in teh master mode or from an external GPIO. If
connecting to an external GPIO, recommended frequencies are 200 kHz to 300 kHz for proper device operation,
and the maximum amplitude is 4 V.
The sync drive on the TPA3106D1 has been improved relative to other TPA310X devices, so please use the
TPA3106D1 as the MASTER when connected in synchronous operation with other device of the TPA310X
family.
Low-ESR capacitors are recommended throughout this application section. A real (as opposed to ideal) capacitor
can be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this resistor
minimizes the beneficial effects of the capacitor in the circuit. The lower the equivalent value of this resistance,
the more the real capacitor behaves like an ideal capacitor.
22
Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s): TPA3106D1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA3106D1VFPG4 | 功能描述:音频放大器 40W Mono Class-D Audio Power 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 |
| TPA3106D1VFPR | 功能描述:音频放大器 40W Mono Class-D 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 |
| TPA3106D1VFPR | 制造商:Texas Instruments 功能描述:Audio Power Amplifiers |
| TPA3106D1VFPRG4 | 功能描述:音频放大器 40W Mono Class-D Audio Power 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 |
| TPA3107D2 | 制造商:TI 制造商全称:Texas Instruments 功能描述:15-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
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