参数资料
| 型号： | NCP2824FCT2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/12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
10
Table 4. NCP2824 CONFIGURATION
Pulse
Counting
Register
Description
01
AGC
AGC disable
02
AGC Enable
03
Reset
Reset configuration
04
Gain
Control
Gain = 12 dB
05
Gain = 18 dB
06
THD
Control
1%
07
2%
08
4%
09
6%
10
8%
11
10%
12
15%
13
20%
14
NC+L
Non Clip + Power limit
15
NC
Non Clip only
16
Power
Limit
Control
0.45 VPeak
17
0.9 VPeak
18
1.35 VPeak
19
1.8 VPeak
20
2.25 VPeak
21
2.7 VPeak
22
3.15 VPeak
23
3.6 VPeak
NOTE: The given values are typical for Vdd = 3.6 V and
TA = 25°C characterized
Builtin Low Pass Filter
This filter allows the user to connect a DAC or a CODEC
directly to the NCP2824 input without increasing the output
noise by mixing frequency with the DAC/CODEC output
frequency. Consequently, optimized operation with DACs
or CODECs is guaranteed without additional external
components.
Decoupling Capacitors
The NCP2824 requires a correct decoupling of the power
supply in order to guarantee the best operation in terms of
audio performances. To achieve optimum performance, it is
necessary to place a 4.7
mF low ESR ceramic capacitor as
close as possible to the VDD pin in order to reduce high
frequency transient spikes due to parasitic inductance (see
Layout considerations).
Input Capacitors Cin
Thanks to its fully differential architecture, the NCP2824
does not require input capacitors. However, it is possible to
use input capacitors when the differential source is not
biased or in single ended configuration. In this case it is
necessary to take into account the corner frequency which
can influence the low frequency response of the NCP2824.
The following equation will help choose the adequate input
capacitor.
fc
+
1
2 @ p @ 75 @ 103 @ Cin
Over Current Protection
This protection allows an over current in the HBridge to
be detected. When the current is higher than 2 A, the
HBridge is positioned in high impedance. When the short
circuit is removed or the current is lower, the NCP2824 goes
back to normal operation. This protection avoids over
current due to a bad assembly (Output shorted together, to
Vdd or to ground).
Layout Recommendations
For Efficiency and EMI considerations, it is strongly
recommended to use Power and ground plane in order to
reduce parasitic resistance and inductance.
For the same reason, it is recommended to keep the output
traces short and well shielded in order to avoid them to act
as antenna.
The level of EMI is strongly dependent upon the
application. However, ferrite beads placed close to the
NCP2824 will reduce EMI radiation when it is needed.
Ferrite value is strongly dependent upon the application.
Figure 17. Example of PCB Layout
Components Selection
To achieve optimum performance, one 4.7
mF 6.3 V X5R
should be used to bypass the power input supply (VDD).
Also particular care must be observed for DCbias effects
in the ceramic capacitor selection. Smaller casesize and
higher DC bias voltage is preferred.
Some recommended capacitors include but are not limited
to:
4.7
mF 6.3 V 0603
TDK: C1608X5R0J475MT 0.95 mm max.
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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 |
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| 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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