Datasheet > 消费电路 > 音频/视频放大器> SSM2319CBZ-R2

SSM2319CBZ-R2

更新时间： 2024-11-03 06:14:15

品牌	Logo	应用领域
亚德诺 - ADI		消费电路商用集成电路音频放大器视频放大器
页数	文件大小	规格书
20页	492K
描述
Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier

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SSM2319CBZ-R2 数据手册

Filterless, High Efficiency,

Mono 3 W Class-D Audio Amplifier

SSM2319

The SSM2319 features a high efficiency, low noise modulation

scheme that does not require any external LC output filters. The

modulation continues to provide high efficiency even at low output

power. It operates with 90% efficiency at 1.4 W into 8 Ω or 85%

efficiency at 3 W into 3 Ω from a 5.0 V supply and has an SNR

of 98 dB. Spread-spectrum pulse density modulation is used to

provide lower EMI-radiated emissions compared with other

Class-D architectures.

FEATURES

Filterless Class-D amplifier with ultraefficient spread-

spectrum Σ-Δ modulation

Internal modulator synchronization (SYNC)

3 W into 3 Ω load and 1.4 W into 8 Ω load at 5.0 V supply

with <1% total harmonic distortion (THD)

90% efficiency at 5.0 V, 1.4 W into 8 Ω speaker

Signal-to-noise ratio (SNR): 98 dB

Single-supply operation: 2.5 V to 5.5 V

Ultralow shutdown current: 20 nA

SYNC can be activated in the event that end users are concerned

about clock intermodulation (beating effect) of several amplifiers in

close proximity.

Short-circuit and thermal protection with autorecovery

Available in 9-ball, 1.5 mm × 1.5 mm WLCSP

Pop-and-click suppression

Built-in resistors reduce board component count

Default fixed 12 dB or user-adjustable gain setting

The SSM2319 has a micropower shutdown mode with a typical

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

logic low to the

pin.

APPLICATIONS

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

This minimizes voltage glitches at the output during turn-on and

turn-off, reducing audible noise on activation and deactivation.

Mobile phones

MP3 players

Portable gaming

Portable electronics

Educational toys

The default gain of the SSM2319 is 12 dB, but users can reduce

the gain by using a pair of external resistors (see the Gain section).

The SSM2319 is specified over the industrial temperature range

of −40°C to +85°C. It has built-in thermal shutdown and output

short-circuit protection. It is available in a 9-ball, 1.5 mm × 1.5 mm

wafer level chip scale package (WLCSP).

GENERAL DESCRIPTION

The SSM2319 is a fully integrated, high efficiency Class-D

audio amplifier. It is 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 5.5 V supply. It is capable of delivering 3 W of continuous

output power with <1% THD + N driving a 3 Ω load from a

5.0 V supply.

FUNCTIONAL BLOCK DIAGRAM

0.1µF

10µF

VBATT

2.5V TO 5.5V

VDD

SSM2319

160kΩ

0.1µF*

40kΩ

IN–

IN+

OUT+

OUT–

AUDIO IN–

AUDIO IN+

MODULATOR

FET

DRIVER

40kΩ

(Σ-Δ)

160kΩ

POP/CLICK

SUPPRESSION

INTERNAL

OSCILLATOR

SHUTDOWN

BIAS

SYNC

SYNC OUTPUT

SYNCO

GND

SYNCI

SYNC INPUT

*INPUT CAPACITORS ARE OPTIONAL IF INPUT DC COMMON-MODE

VOLTAGE IS APPROXIMATELY V /2.

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

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SSM2319CBZ-R2 替代型号

型号	品牌	替代类型	描述	数据表
SSM2375CBZ-REEL7	ADI	完全替代	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2319CBZ-REEL	ADI	完全替代	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2319CBZ-REEL7	ADI	完全替代	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier

与SSM2319CBZ-R2相关器件

型号	品牌	获取价格	描述	数据表
SSM2319CBZ-REEL	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2319CBZ-REEL7	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2335	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2335CBZ-R2	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2335CBZ-REEL	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2335CBZ-REEL7	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2356	ADI	获取价格	2 × 2W Filterless Class-D Stereo Audio Amplif
SSM2356CBZ-REEL	ADI	获取价格	2 × 2W Filterless Class-D Stereo Audio Amplif
SSM2356CBZ-REEL7	ADI	获取价格	2 × 2W Filterless Class-D Stereo Audio Amplif
SSM2356CBZ-RL	ADI	获取价格	2 x 2W Filterless Class-D Stereo Audio Amplifier

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