Datasheet > 消费电路 > 音频/视频放大器> SSM2317CBZ-REEL7

SSM2317CBZ-REEL7

更新时间： 2024-11-29 04:02:47

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	766K
描述
Filterless High Efficiency Mono 3 W Class-D Audio Amplifier

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SSM2317CBZ-REEL7 数据手册

Filterless High Efficiency

Mono 3 W Class-D Audio Amplifier

SSM2317

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.

FEATURES

Filterless Class-D amplifier with Σ-Δ modulation

Automatic level control (ALC) improves dynamic range and

prevents clipping

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

with <10% total harmonic distortion (ALC off)

700 mW into 8 Ω load at 4.2 V supply (ALC 80%)

93% efficiency at 5.0 V, 1.4 W into 8 Ω speaker

>93 dB signal-to-noise ratio (SNR)

Single-supply operation from 2.5 V to 5.5 V

20 nA ultralow shutdown current

Short-circuit and thermal protection

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

Pop-and-click suppression

Built-in resistors reduce board component count

Default fixed 18 dB or user-adjustable gain setting

The SSM2317 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 93% 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

>93 dB. Spread-spectrum pulse density modulation is used to

provide lower EMI radiated emissions compared with other

Class-D architectures.

Automatic level control (ALC) can be activated to suppress

clipping and improve dynamic range. This feature only requires

one external resistor tied to GND via the VTH pin and an

activation voltage on the ALC_EN pin.

The SSM2317 has a micropower shutdown mode with a typical

shutdown current of 20 nA. Shutdown is enabled by applying

APPLICATIONS

Mobile phones

a logic low to the

pin.

MP3 players

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.

Portable gaming

Portable electronics

Educational toys

The default gain of the SSM2317 is 18 dB, but users can reduce the

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

GENERAL DESCRIPTION

The SSM2317 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

The SSM2317 is specified over the commercial 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).

FUNCTIONAL BLOCK DIAGRAM

VBATT

2.5V TO 5.5V

10µF

0.1µF

VDD

SSM2317

80kΩ

0.1µF

10kΩ

IN+

AUDIO IN+

OUT+

OUT–

MODULATOR

FET

DRIVER

(Σ-Δ)

0.1µF

IN–

AUDIO IN–

80kΩ

INTERNAL

OSCILLATOR

POP-AND-CLICK

SUPPRESSION

BIAS

ALC

SHUTDOWN

GND

ALC_EN

VTH

ALC ENABLE

INPUT CAPACITORS 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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SSM2317CBZ-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
SSM2335CBZ-R2	ADI	完全替代	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2315CBZ-REEL7	ADI	类似代替	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2377ACBZ-R7	ADI	类似代替	Filterless, High Efficiency, Mono 2.5 W Class-D Audio Amplifier Pop-and-click suppression

与SSM2317CBZ-REEL7相关器件

型号	品牌	获取价格	描述	数据表
SSM2317-EVALZ	ADI	获取价格	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2317-MINI-EVALZ	ADI	获取价格	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2318GEN	SSC	获取价格	N-channel Enhancement-mode Power MOSFET
SSM2319	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2319CBZ-R2	ADI	获取价格	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
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

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