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参数资料
| 型号： | TDA7572 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 封装： | ROHS COMPLIANT, HIQUAD-64 |
| 文件页数： | 38/64页 |
| 文件大小： | 1052K |
| 代理商： | TDA7572 |
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TDA7572
Modulator
consists in a clipping of current when the first threshold for VDS is trespassed. It is obtained
by sink or source current to the virtual ground of modulator integrator. The cycle-by-cycle
limitation is a strong limitation. If the second VDS threshold is trespassed for more than
about 2s the half bridge is tri-stated. If this condition persists for more then four PWM
periods the modulator is definitely tri-stated. It is possible setting the threshold VDS voltage
for the current limiting by the pin IlimitThreshold: the first threshold is the value voltage value
of this pin (referred to VN2.5), the second one is the same value multiply by the factor 1.5.
7.2
ANTI-POP shunt driver
The device is provided by a driver able to control an anti-pop shunt MOS which is
connectable in series or in parallel to the load. During the mute-to-play or play-to-mute
transition an external MOS is able to disconnect (MOS in series) or short (MOS in parallel)
the speaker in order to reduce the audible pop noise.
The shunt driver is able to source or sink a predefined current (see Table 17). The following
diagram reports the temporal behave of current at the shunt pin respect to the voltage on the
mute pin in NOI2CBUS mode.
Figure 6.
Current sourced by the shunt pin in NO I2Cbus mode
In I2Cbus mode it is possible to change the driver current direction only by change the bit D0
of byte 5. When the bit is set to 1 the current is sourced. By default the current is sourced.
Isource
Vsd+Vsdh
Vmute
AC00018
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7572TR | 功能描述:音频放大器 200W Mono Bridge PWM Amplifier Built-In 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 |
| TDA7575 | 功能描述:音频放大器 MULTI F DUAL 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 |
| TDA7575B | 功能描述:音频放大器 2 x 75W Multifunct Dual-Bridge 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 |
| TDA7575BPD | 功能描述:音频放大器 2 x 75W Multifunct Dual-Bridge 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 |
| TDA7575BPDTR | 功能描述:音频放大器 2 x 75W Multifunct Dual-Bridge 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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