SSM2304

更新时间： 2024-11-03 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
19页	408K
描述
2 W Filterless Class-D Stereo Audio Amplifier

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SSM2304 数据手册

2 W Filterless Class-D

Stereo Audio Amplifier

SSM2304

Preliminary Technical Data

The SSM2304 features a high efficiency, low noise modulation

scheme. It operates with 85% efficiency at 2 W into 4 Ω from a

5.0 V supply and has a signal-to-noise ratio (SNR) that is better

than 95 dB. PDM modulation is used to provide lower EMI-

radiated emissions compared with other Class-D architectures.

FEATURES

Filterless Class-D amplifier with built-in output stage

2 W into 4 Ω and 1.2 W into 8 Ω at 5.0 V supply with less than

10% THD

85% efficiency at 5.0 V, 2W into 4 Ω speaker

Better than 95dB SNR (signal-to-noise ratio)

Available in 16-lead 3 mm × 3 mm LFCSP

Single-supply operation from 2.2 V to 5.0 V

20 nA ultralow shutdown current

The SSM2304 has a micropower shutdown mode with a typical

shutdown current of 20 nA. Shutdown is enabled by applying a

logic low to the

pin.

Short-circuit and thermal protection

Pop-and-click suppression

Built-in resistors reduce board component count

Default fixed 18dB gain and user-adjustable

The architecture of the device allows it to achieve a very low level

of pop and click. This minimizes voltage glitches at the output

during turn-on and turn-off, thus reducing audible noise on

activation and deactivation.

APPLICATIONS

Notebooks and PCs

Mobile phones

MP3 players

Portable gaming

Portable electronics

Educational toys

The fully differential input of the SSM2304 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 V_DD/2.

The SSM2304 also has excellent rejection of power supply noise,

including noise caused by GSM transmission bursts and RF

rectification. PSRR is typically 70 dB at 217 Hz.

GENERAL DESCRIPTION

The SSM2304 is a fully integrated, high efficiency, Class-D stereo

audio amplifier. It is designed to maximize performance for

portable applications. The application circuit requires a

minimum of external components and operates from a single

2.2 V to 5.0 V supply. It is capable of delivering 2 W of con-

tinuous output power with less than 10% THD + N driving a

4 Ω load from a 5.0 V supply.

The gain can be set to 6 dB or 18 dB utilizing the gain control

select pin connected respectively to ground or V_DD. Gain can

also be adjusted externally by using an external resistor.

The SSM2304 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).

Rev. PrD

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

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与SSM2304相关器件

型号	品牌	获取价格	描述	数据表
SSM2304AGN	SSC	获取价格	N-CHANNEL ENHANCEMENT-MODE POWER MOSFET
SSM2304CPZ-REEL	ADI	获取价格	2 W Filterless Class-D Stereo Audio Amplifier
SSM2304CPZ-REEL7	ADI	获取价格	2 W Filterless Class-D Stereo Audio Amplifier
SSM2304N	SSC	获取价格	N-CHANNEL ENHANCEMENT-MODE POWER MOSFET
SSM2305	ADI	获取价格	Filterless High Efficiency Mono 2.8 W Class-D Audio Amplifier
SSM2305A	SECOS	获取价格	P-Channel Enhancement Mode Power Mos.FET
SSM2305AGN	SSC	获取价格	P-channel Enhancement-mode Power MOSFET
SSM2305CPZ-R2	ADI	获取价格	Filterless High Efficiency Mono 2.8 W Class-D Audio Amplifier
SSM2305CPZ-REEL	ADI	获取价格	Filterless High Efficiency Mono 2.8 W Class-D Audio Amplifier
SSM2305CPZ-REEL7	ADI	获取价格	Filterless High Efficiency Mono 2.8 W Class-D Audio Amplifier

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