参数资料
| 型号： | NCP2824FCT2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC AMP MONO CLASS D AGC 9-WCSP |
| 标准包装： | 1 |
| 系列： | NOCAP™ |
| 类型： | D 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 2.4W x 1 @ 4 欧姆 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 特点： | 差分输入，短路和热保护 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 9-覆晶 |
| 封装/外壳： | 9-WFBGA，FCBGA |
| 包装： | 标准包装 |
| 其它名称： | NCP2824FCT2GOSDKR |
NCP2824
http://onsemi.com
9
Detailed Operating Description
General Description
The NCP2824 is a Mono class D audio amplifier featuring
a preamplifier stage, a PWM stage and an HBridge stage
with an automatic Gain control circuitry which performs the
non clipping function.
Non Clipping Function
In the presence of an exceeded input signal, when the
audio signal is going to be clipped, the gain of the audio
amplifier automatically decreases as defined by the AGC
operation. The maximum level of THD is programmable
and can be set by a final user through the single wire
interface (see table n
°1).
At the same time, the battery voltage is continuously
monitored. The output signal is adapted to the dynamic
battery voltage (Vdd) in order to avoid distortion due to
supply voltage fluctuation like GSM burst.
This function solution allows the chip to maximize the
sound pressure level while maintaining a controlled THD
level.
The following picture depicts the non clipping operation.
VP
VP/2
Figure 16. Output of the Amplifier during a Line
Transient on the Battery Voltage
Power Limit Function: Speaker Protection
In addition to the non clipping function, a Power limit
function is embedded in the NCP2824 in order to protect
speakers from excessive output signal levels. When the
output signal exceed this limit, the ???
Thus, the final user can use the Single Wire interface to
program the maximum voltage rated by the speaker or to
disable this power limit protection.
AGC Operation
The AGC operation defines the timings when the non
clipping function is engaged.
The typical values are described in the Electrical Table
(“AGC Section”).
Attack time (Ta): is defined as the minimum time between
two gain decrease.
Hold time (Th): is defined as the minimum time between
a gain increase after a gain decrease.
Release time (Tr): is defined as the minimum time between
two gain increase.
The following pictures depict the NCP2824 non clipping
operation.
Ta
Th
Tr
Without Non clip
function
With Non clip
function
Single Wire Interface Operation
The single wire interface allows changing the default
configuration of the NCP2824.
After Wake up, the NCP2824 is configured with:
AGC enable
Non Clip + Power limit
Gain = 18 dB
THD max = 1%
The following table described all the NCP2824
configurations.
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相关代理商/技术参数 |
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|---|---|
| NCP2824FCT2GEVB | 功能描述:音频 IC 开发工具 NCP2824 EVB RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| NCP2830 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:1W Constant Filterless Class-D Audio Amplifier |
| NCP2830MUTXG | 功能描述:音频放大器 Audio Amp w/Integra Charge Pump 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 |
| NCP2830MUTXGEVB | 功能描述:BOARD EVAL NCP2830 RoHS:是 类别:编程器，开发系统 >> 评估板 - 音频放大器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| NCP2860 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
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