Datasheet > SSM2301RMZ

SSM2301RMZ

更新时间： 2024-11-04 01:21:15

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	430K
描述
Filterless High Efficiency Mono 1.4W Class-D Audio Amplifier

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SSM2301RMZ 数据手册

Filterless High Efficiency

Mono 1.4 W Class-D Audio Amplifier

SSM2301

The SSM2301 operates with 85% efficiency at 1.4 W into 8 Ω

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

is greater than 98 dB. Spread-spectrum modulation is used to

provide lower EMI-radiated emissions compared with other

Class-D architectures.

FEATURES

Filterless Class-D amplifier with Σ-Δ modulation

No sync necessary when using multiple Class-D amplifiers

from Analog Devices, Inc.

1.4 W into 8 Ω at 5.0 V supply with less than 1% THD + N

85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker

Greater than 98 dB SNR (signal-to-noise ratio)

Single-supply operation from 2.5 V to 5.0 V

20 nA ultralow shutdown current

The SSM2301 has a micropower shutdown mode with a maximum

shutdown current of 30 nA. Shutdown is enabled by applying

a logic low to the

pin.

Short-circuit and thermal protection

Available in 8-lead, 3 mm × 3 mm LFCSP and MSOP packages

Pop-and-click suppression

Built-in resistors reduce board component count

Fixed and user-adjustable gain configurations

The device also includes pop-and-click suppression circuitry.

This minimizes voltage glitches at the output during turn-on

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

deactivation.

The fully differential input of the SSM2301 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.

APPLICATIONS

Mobile phones

MP3 players

Portable gaming

Portable electronics

Educational toys

The SSM2301 also has excellent rejection of power supply noise,

including noise caused by GSM transmission bursts and RF

rectification. PSRR is typically 63 dB at 217 Hz.

GENERAL DESCRIPTION

The SSM2301 is a fully integrated, high efficiency, Class-D audio

amplifier designed to maximize performance for mobile phone

applications. The application circuit requires a minimum of

external components and operates from a single 2.5 V to 5.0 V

supply. It is capable of delivering 1.4 W of continuous output

power with less than 1% THD + N driving an 8 Ω load from

a 5.0 V supply.

The gain can be set to 6 dB or 12 dB by utilizing the gain control

select pin connected respectively to ground or to VDD. Gain

can also be adjusted externally by inserting a resistor in series

with each input pin.

The SSM2301 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 both an 8-lead, 3 mm ×

3 mm lead-frame chip scale package (LFCSP) and an 8-lead

MSOP package.

The SSM2301 features a high efficiency, low noise modulation

scheme that does not require external LC output filters. The modu-

lation provides high efficiency even at low output power.

FUNCTIONAL BLOCK DIAGRAM

VBATT

2.5V TO 5.0V

10µF

0.1µF

VDD

SSM2301

IN+

0.01µF

OUT+

OUT–

AUDIO IN+

GAIN

FET

MODULATOR

CONTROL

IN–

DRIVER

AUDIO IN–

0.01µF

GAIN

POP/CLICK

BIAS

OSCILLATOR

SHUTDOWN

SUPPRESSION

GND

NOTES

INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE

VOLTAGE IS APPROXIMATELY V /2.

Figure 1.

Rev. A

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SSM2301RMZ相关器件

型号	品牌	获取价格	描述	数据表
SSM2301RMZ-R2	ADI	获取价格	Filterless High Efficiency Mono 1.4W Class-D Audio Amplifier
SSM2301RMZ-REEL	ADI	获取价格	Filterless High Efficiency Mono 1.4W Class-D Audio Amplifier
SSM2301RMZ-REEL7	ADI	获取价格	Filterless High Efficiency Mono 1.4W Class-D Audio Amplifier
SSM2302	ADI	获取价格	Filterless High Efficiency Class-D Stereo Audio Amplifier
SSM2302CPZ-R2	ADI	获取价格	Filterless High Efficiency Class-D Stereo Audio Amplifier
SSM2302CPZ-REEL	ADI	获取价格	Filterless High Efficiency Class-D Stereo Audio Amplifier
SSM2302CPZ-REEL7	ADI	获取价格	Filterless High Efficiency Class-D Stereo Audio Amplifier
SSM2302N	SSC	获取价格	N-CHANNEL ENHANCEMENT-MODE POWER MOSFET
SSM2303N	SSC	获取价格	P-CHANNEL ENHANCEMENT-MODE POWER MOSFET
SSM2304	ADI	获取价格	2 W Filterless Class-D Stereo Audio Amplifier

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