Audio Power Amplifiers | NCP2820
音频功率放大器，D 级，2.65 W，无滤波器，单声道
Last Shipments
概览
NCP2820 是一款成本高效的单声道 D 级音频功率放大器，能够基于 5V 电源向 4 Ω 桥接负载提供 2.65W 的连续平均功率。在相同条件下，输出功率级可以不到 1% 的 THD+N 向 8 Ω BTL 负载提供 1.4W 功率。对于蜂窝电话听筒或 PDA，它可以带来空间和成本节省，因为使用直感传感器时无需输出滤波器。能效超过 90%，关断电流极低，可以延长电池寿命，大大降低结温度。NCP2820 使用脉宽调制技术处理弄你输入，与传统 sigma-delta 调制器相比可降低输出噪声和 THD。该器件在从不同音频源合并信号的同时实现独立增益。因此，在蜂窝电话听筒、耳机和扬声器，甚至旋律振铃器中，都可以用一个 NCP2820 进行驱动。由于较低的 42uV A 加权本底噪音，无论负载灵敏度如何都可保证清晰的收听。
- Audio Amplification for 4ohm/ 8ohm speaker
- Cellular Phone
- Portable Game, DVD
- Global Positioning System/ Device (GPS/ GPN)
- Smart phone, PDA, PMP
- Optimized PWM Output Stage: Filterless Capability
- Efficiency up to 90% and Low 2.5mA Typical Quiescent Current
- Large Output Power Capability: 1.4W with 8Ω Load and THD+N<1%
- Wide Supply Voltage Range: 2.5-5.5V Operating Voltage
- High Performance, THD+N of 0.03%@Vp=5V, RL=8Ω, Pout=100mW
- Excellent PSRR (-65dB): No Need for Voltage Regulation
- Surface Mounted Package 9-Pin Flip-Chip CSP (SnPb and Pb-Free)
- Fully Differential Design. Eliminates Two Input Coupling Capacitors
- Very Fast Turn On/Off Times with Advanced Rising and Falling Gain Technique
- External Gain Configuration Capability
- Internally Generated 250kHz Switching Frequency
- Short Circuit Protection Circuitry
- Pop & Click Noise Protection Circuitry
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Pb
A
H
P
Flip-Chip-9
1
260
DSFTP
3000
No
D
2.12
5.5
Differential
9
0.05
2.2
300
Price N/A
More Details
More Details
Last Shipments
Pb
A
H
P
DFN-8
1
260
REEL
3000
No
D
2.19
5.5
Differential
1
0.05
2.2
300
Price N/A
More Details
Last Shipments
Pb
A
H
P
DFN-8
1
260
REEL
3000
No
D
2.19
5.5
Differential
1
0.05
2.2
300
Price N/A
More Details
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