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参数资料
| 型号： | TB2924AFG |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 21 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | 0.65 MM PITCH, PLASTIC, HSOP-36 |
| 文件页数： | 11/16页 |
| 文件大小： | 375K |
| 代理商： | TB2924AFG |
TB2924AFG
2007-01-26
4
Supplementary Explanation
<Control switches>
1. Pin 17 (muting switch)
Enable or disable audio muting.
The input amplifier is switched to a dummy amplifier within the IC, so that the audio output is
muted with the amplifier still operating (PWM switched operation with 50% duty ratio).
Pin 17 outputs a voltage of approximately 2.4 V (approx. 4 VF) when open, while VTH for the built-in
switch is lower than 1.8 V. Leaving the pin open, therefore, disables muting.
Logic
“H” or open: Demute
“L” (GND): Mute on
2. Pin 16 (standby switch)
When the voltage on pin 16 becomes 1.8 V or higher, the bias circuit activates, enabling the IC to
operate.
Logic
“H”: IC active
“L” (GND): IC standby on
<Others>
3. Thermal AGC Function and Thermal Shutdown Circuit
If the chip temperature exceeds the junction temperature (150°C min.), the thermal AGC function
attenuates the input signal to maintain the chip temperature below the junction temperature.
If the chip temperature further increases, the thermal shutdown circuit activates. The chip recovers
from the thermal shutdown state once the chip temperature falls below the junction temperature.
4. Master and Slave Oscillation Frequencies (OSC IN, OSC OUT, OSC SW)
When configuring a multichannel amplifier system with three or more channels, the oscillation
frequency for a single IC can be used as a master and supplied to other ICs to prevent a beat due to a
difference among switching frequencies.(Max.6ch (3ICs))
The oscillators for slave ICs should be turned off using the OSC SW pin.
“H”: Turn the oscillator on
“L” (GND): Turn the oscillator off
(Example with multiple ICs)
21
22
OSC OUT
OSC IN
470
pF
VCC/2
21
22
OSC OUT
OSC IN
Open
Master IC
Slave IC
26
OSC SW
Pre
VCC
26
OSC SW
Pre
GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2924FG | 制造商:Toshiba 功能描述:CLASS-D AUDIO POWER AMPLIFIER |
| TB2924FG(O,EL) | 功能描述:音频放大器 20W x 2ch 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 |
| TB2926CHQ | 功能描述:音频放大器 4-Ch BTL PWR AMP Pout MAX 49W 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 |
| TB2929 | 制造商:Toshiba 功能描述:Four-Channel BTL power amplifier for Car Audio appliciton 4X47w |
| TB2929AHQ(O) | 制造商:Toshiba America Electronic Components 功能描述:AUDIO |
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