參數資料
型號: TDA7491LP
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
封裝: ROHS COMPLIANT, SSOP-36
文件頁數: 19/34頁
文件大?。?/td> 882K
代理商: TDA7491LP
Applications information
TDA7491LP
26/34
Doc ID 13541 Rev 4
7
Applications information
7.1
Mode selection
The three operating modes of the TDA7491LP are set by the two inputs STBY (pin 20) and
MUTE (pin 21).
Standby mode: all circuits are turned off, very low current consumption.
Mute mode: inputs are connected to ground and the positive and negative PWM
outputs are at 50% duty cycle.
Play mode: the amplifiers are active.
The protection functions of the TDA7491LP are realized by pulling down the voltages of the
STBY and MUTE inputs shown in Figure 36. The input current of the corresponding pins
must be limited to 200 A.
Figure 36.
Standby and mute circuits
Figure 37.
Turn-on/off sequence for minimizing speaker “pop”
Table 7.
Mode settings
Mode
STBY
MUTE
Standby
L (1)
1.
X (don’t care)
Mute
H (1)
L
Play
H
STBY
MUTE
0 V
3.3 V
C7
2.2 F
R2
30 k
Standby
0 V
3.3 V
C15
2.2 F
R4
30 k
Mute
TDA7491LP
相關PDF資料
PDF描述
TDA7491MV13TR 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7491MV 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7491P13TR 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7491P 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA749213TR 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
相關代理商/技術參數
參數描述
TDA7491LP13TR 功能描述:音頻放大器 20W Dual BTL Class D 18V VCC Audio Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7491MV 功能描述:音頻放大器 25W Mono BTL Class-D 4-Select dB RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7491MV13TR 功能描述:音頻放大器 25W Mono BTL Class-D 4-Select dB RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7491P 功能描述:音頻放大器 20W Dual BTL Class D 18V VCC Audio Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7491P13TR 功能描述:音頻放大器 20W Dual BTL Class D 18V VCC Audio Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel