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参数资料
| 型号： | TDA7266D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封装： | POWERSO-20 |
| 文件页数： | 9/13页 |
| 文件大小： | 194K |
| 代理商： | TDA7266D |
5/13
TDA7266D
Figure 2. Microprocessor Driving Signals
B) Low Cost Application
In low cost applications where the mP is not present, the suggested circuit is shown in fig.3.
The St-by and mute terminals are tied together and they are connected to the supply line via an external voltage
divider.
The device is switched-on/off from the supply line and the external capacitor C4 is intended to delay the St-by
and mute threshold exceeding, avoiding "Popping" problems.
So to avoid any popping or clicking sond, it is important to clock:
a Correct Sequence: At turn-ON, the Stand-by must be removed at first, then the Mute must be re-
leased after a delay of about 100-200ms. On the contrary at turn-OFF the Mute must be activated
as first and then the Stand-by.
With the values suggested in the Application circuit the right operation is guaranteed.
b Correct Threshold Voltages: In order to avoid that due to the spread in the internal thresholds (see
the above limits) a wrong external voltage causes uncertain commutations for the two functions we
suggest to use the following values:
Mute for Vcc>6.4V
: VT = 2.3V
Mute for Vcc<6.4V
: VT = Vcc/2 - 1
Stand-by
: VT = 0.8V
+VS(V)
VIN
(mV)
VST-BY
pin 9
Iq
(mA)
ST-BY
MUTE
PLAY
MUTE
ST-BY
+18
1.8
0.8
VMUTE
pin 8
4.1
2.3
OFF
D02AU1411
VOUT
(V)
2.9
1.3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7266D13TR | 功能描述:音频放大器 7+7W DUAL BRIDGE 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 |
| TDA7266G-J15-A-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:7+7W DUAL BRIDGE AMPLIFIER |
| TDA7266G-J15-B-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:7+7W DUAL BRIDGE AMPLIFIER |
| TDA7266G-J15-D-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:7+7W DUAL BRIDGE AMPLIFIER |
| TDA7266-J15-A-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:7+7W DUAL BRIDGE AMPLIFIER |
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