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SSM2306CPZ-REEL

更新时间： 2024-11-07 04:02:47
品牌 Logo 应用领域
亚德诺 - ADI 音频放大器
页数 文件大小 规格书
16页 498K
描述
2 W, Filterless, Class-D Stereo Audio Amplifier

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SSM2306CPZ-REEL 数据手册

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2 W, Filterless, Class-D  
Stereo Audio Amplifier  
SSM2306  
The SSM2306 features ultralow idle current, high efficiency, and  
a low noise modulation scheme. It operates with >87% efficiency  
at 1.4 W into 8 Ω from a 5.0 V supply and has a signal-to-noise  
ratio (SNR) that is better than 96 dB. PDM modulation offers lower  
EMI radiated emissions compared to other Class-D architectures.  
FEATURES  
Filterless Class-D amplifier with built-in output stage  
2 W into 4 Ω and 1.4 W into 8 Ω at 5.0 V supply  
Ultralow idle current with load resistance  
>87% efficiency at 5.0 V, 1.4 W into 8 Ω speaker  
Better than 96 dB SNR (signal-to-noise ratio)  
Available in 16-lead, 3 mm × 3 mm LFCSP  
Single-supply operation from 2.5 V to 5.0 V  
20 nA ultralow shutdown current  
The SSM2306 has a micropower shutdown mode with a typical  
shutdown current of 20 nA. Shutdown is enabled by applying a  
SD  
logic low to the  
pin.  
Short-circuit and thermal protection  
Pop-and-click suppression  
Built-in resistors reduce board component count  
Default fixed 18 dB gain and user-adjustable  
The architecture of the device allows it to achieve a very low level  
of pop and click to minimize voltage glitches at the output  
during turn-on and turn-off, thereby reducing audible noise on  
activation and deactivation. The fully differential input of the  
SSM2306 provides excellent rejection of common-mode noise  
on the input. Input coupling capacitors can be omitted if the dc  
input common-mode voltage is approximately VDD/2.  
APPLICATIONS  
Mobile phones  
MP3 players  
Portable gaming  
Portable electronics  
Educational toys  
Notebook computers  
The SSM2306 also has excellent rejection of power supply noise,  
including noise caused by GSM transmission bursts and RF  
rectification.  
The SSM2306 has a preset gain of 18 dB that can be reduced by  
using external resistors.  
GENERAL DESCRIPTION  
The SSM2306 is a fully integrated, high efficiency, Class-D stereo  
audio amplifier designed to maximize performance for portable  
applications. The application circuit requires minimum external  
components and operates from a single 2.5 V to 5.0 V supply. It  
is capable of delivering 2 W of continuous output power with less  
than 10% THD + N driving a 4 Ω load from a 5.0 V supply.  
The SSM2306 is specified over the commercial temperature range  
(−40°C to +85°C). It has built-in thermal shutdown and output  
short-circuit protection. It is available in a 16-lead, 3 mm × 3 mm  
lead frame chip scale package (LFCSP).  
FUNCTIONAL BLOCK DIAGRAM  
VBATT  
2.5V TO 5.0V  
10µF  
0.1µF  
VDD  
SSM2306  
344kΩ  
VDD  
1
1
22nF  
22nF  
R
R
EXT  
EXT  
43kΩ  
OUTR+  
RIGHT IN+  
RIGHT IN–  
FET  
DRIVER  
INR+  
INR–  
MODULATOR  
OUTR–  
43kΩ  
344kΩ  
BIAS  
INTERNAL  
OSCILLATOR  
SHUTDOWN  
SD  
344kΩ  
1
1
22nF  
22nF  
R
R
EXT  
EXT  
43kΩ  
43kΩ  
OUTL+  
OUTL–  
LEFT IN+  
LEFT IN–  
FET  
INL+  
INL–  
MODULATOR  
GND  
DRIVER  
GND  
344kΩ  
GAIN = 344kΩ/(43kΩ + R  
)
EXT  
1
INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE  
VOLTAGE IS APPROXIMATELY V /2.  
DD  
Figure 1.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
 
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SSM2306CPZ-REEL 替代型号

型号 品牌 替代类型 描述 数据表
SSM2304CPZ-REEL ADI

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