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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： | 21/64页 |
| 文件大小： | 1052K |
| 代理商： | TDA7572 |
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I2C and mode control
TDA7572
5
I2C and mode control
The Mode1 and Mode0 pins are used to enable TDA7572. These perform the function of
bringing the IC out of standby (typically handled by a single standby pin on most audio IC's)
as well as determining if the I2C bus is active or if power-up Diagnostics shall automatically
occurs.
The Auto-mute Voltage pin is used to provide an under-voltage-lockout for the IC. Using a
resistor divider between V2P5 and SVR a series of comparator prevent the IC from power-
up further until sufficient voltage is present at VSP and SVR(equal to GND in the split supply
case. Once this voltage requirement is met, the chip is forced into mute (a special, direct
form of mute that does not use or act upon the MUTE pin) under a second, higher voltage
threshold is met. At this point the IC performs its normal power-up, controlled by the state of
the MODE pins and the various configuration pins. Refer to the under-voltage lockout
(UVLO) section of the documentation for details on these thresholds.
The Auto-mute Voltage pin is also used to provide an over-voltage shutdown based on
absolute voltage of VSP-VSM.
When I2C bus is active, determined by the Mode0 and Mode1 pins, any operating mode of
the IC may be modified and diagnostics may be controlled and results read back.
Table 19.
Power-up mode control
Mode1
Mode0
State/function
0
Standby, or “Off”
01
NO I2C BUS mode
TDA7572 enabled
Configuration defaults read from pin
I2C disabled
Power-Up-Diagnostics disabled
11
I2C BUS mode
TDA7572 enabled
I2C enabled
Power-Up-Diagnostics disabled
TDA7572 enabled
Configuration defaults read from pins
I2C disabled
Power-Up-Diagnostics enabled
10
DIAGNOSTIC mode
TDA7572 enabled
Configuration defaults read from pins
I2C disabled
Power-Up-Diagnostics enabled
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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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