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参数资料
| 型号： | NCS8353MNGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL NCS8353 AUDIO AMP |
| 设计资源： | NCS8353MNGEVB Schematic NCS8353MNGEVB Gerber Files NCS8353MNGEVB Bill of Materials |
| 标准包装： | 1 |
| 放大器类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 20W x 2 @ 8 欧姆 |
| 电源电压： | 8 V ~ 26 V |
| 工作温度： | -40°C ~ 85°C |
| 板类型： | 完全填充 |
| 已用 IC / 零件： | NCS8353 |
| 已供物品： | 板 |
| 其它名称： | NCS8353MNGEVBOS |
NCS8353
http://onsemi.com
11
APPLICATIONS INFORMATION
Digital Power Limiter
The NCS8353 utilizes a Digital Power Limiter (DPL)
feature that limits the output power to 10 W, 12 W, 15 W, or
20 W per channel. This is achieved by the two external
power limit pins, PL0 and PL1, which are TTL level
compatible.
If a change in power limit is desired, the NCS8353 must
first be disabled followed by setting a new power limit.
Finally, when the NCS8353 is reenabled, the new power
limit will be active.
Table 1 illustrates the power limit per channel of the
NCS8353 depending on the logic level of the power limit
pins and is based on an 8
W speaker load.
Table 1.
PL1
PL0
Power Limit
0
10 W
0
1
12 W
1
0
15 W
1
20 W
Figure 16 shows a typical output waveform and a desired
output power for an application. If the output waveform
produces a higher output power than required; e.g., due to
high input amplitudes, the DPL feature of the NCS8353
activates.
Figure 16. Before DPL Operation
VDD
GND
Required
Power
The DPL reduces the internal gain of the NCS8353 thus
reduces the output voltage to ensure the programmed power
limit is not exceeded. Figure 17 illustrates the output voltage
waveform after the DPL is activated.
Figure 17. DPL Activated
VDD
GND
Power
Limit
The DPL monitors the input referred voltage level and is
dependent on the programmed gain of the NCS8353.
to verify when the DPL will activate assuming an 8
W load.
If the input voltage exceeds the input reference levels
illustrated in Table 2, the DPL will activate.
Figure 18 highlights the output power vs. input voltage for
programmed power limits.
0
5
10
15
20
25
0.05
0.1
0.15
0.2
0.25
Figure 18. Power Limiter vs. Vin
Vin, INPUT VOLTAGE (V)
P
out
(W)
PL = 15 W
PL = 20 W
PL = 12 W
PL = 10 W
VCC = 24 V
RL = 8 W
AV = 36 dB
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCS8353MNTXG | 功能描述:音频放大器 20W CLASS D AUDIO 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 |
| NCS-8-4-12 | 制造商:z*INACTIVE* NATIONAL 功能描述: |
| NCSA3102 | 制造商:Hubbell Wiring Device-Kellems 功能描述:N-QCK, SNAP, FEM ANG PLG, 3P, #24, 2M |
| NCSA3105 | 制造商:Hubbell Wiring Device-Kellems 功能描述:N-QCK, SNAP, FEM ANG PLG, 3P, #24, 5M |
| NCSA3202 | 制造商:Hubbell Wiring Device-Kellems 功能描述:NANO-QCK, SNAP ANG FEM PLG, 3P, 2M |
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