Datasheet > 消费电路 > 音频/视频放大器> SSM2356CBZ-RL

SSM2356CBZ-RL

更新时间： 2024-11-03 12:19:11

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	505K
描述
2 x 2W Filterless Class-D Stereo Audio Amplifier

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SSM2356CBZ-RL 数据手册

2 × 2W Filterless Class-D

Stereo Audio Amplifier

SSM2356

Data Sheet

The SSM2356 features a high efficiency, low noise modulation

scheme that requires no external LC output filters. The modulation

continues to provide high efficiency even at low output power.

It operates with 92% efficiency at 1.4 W into 8 Ω or 85% efficiency

at 2.0 W into 4 Ω from a 5.0 V supply and has an SNR of >103 dB.

FEATURES

Filterless stereo Class-D amplifier with Σ-Δ modulation

No sync necessary when using multiple Class-D amplifiers

from Analog Devices, Inc.

2 × 2W into 4 Ω load and 2x1.4 W into 8 Ω load at 5.0 V

supply with <1% total harmonic distortion (THD + N)

92% efficiency at 5.0 V, 1.4 W into 8 Ω speaker

>103 dB signal-to-noise ratio (SNR)

Single-supply operation from 2.5 V to 5.5 V

20 nA shutdown current; left/right channel control

Short-circuit and thermal protection

Spread-spectrum pulse density modulation is used to provide

lower EMI-radiated emissions compared with other Class-D

architectures. The SSM2356 includes an optional modulation

select pin (ultralow EMI emission mode) that significantly

reduces the radiated emissions at the Class-D outputs, particularly

above 100 MHz.

Available in a 16-ball, 1.66 mm × 1.66 mm WLCSP

Pop-and-click suppression

Built-in resistors that reduce board component count

User-selectable 6 dB or 18 dB gain setting

User-selectable ultralow EMI emission mode

The SSM2356 has a micropower shutdown mode with a typical

shutdown current of 20 nA. Shutdown is enabled by applying

a logic low to the

and

pins. The device also

SDNR

SDNL

includes pop-and-click suppression circuitry that minimizes

voltage glitches at the output during turn-on and turn-off,

reducing audible noise on activation and deactivation.

APPLICATIONS

Mobile phones

MP3 players

Portable gaming

Portable electronics

The fully differential input of the SSM2356 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 preset gain of SSM2356 can be

selected between 6 dB and 18 dB with no external components

and no change to the input impedance. Gain can be further

reduced to a user-defined setting by inserting series external

resistors at the inputs.

GENERAL DESCRIPTION

The SSM2356 is a fully integrated, high efficiency, stereo 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 2 × 2W of contin-

uous output power with <1% THD + N driving a 4 Ω load from a

5.0 V supply.

The SSM2356 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-ball, 1.66 mm ×

1.66 mm wafer level chip scale package (WLCSP).

FUNCTIONAL BLOCK DIAGRAM

VBATT

2.5V TO 5.5V

10µF

0.1µF

VDD

SSM2356

22nF

80kΩ

OUTR+

RIGHT IN+

RIGHT IN–

GAIN

CONTROL

FET

DRIVER

MODULATOR

INR+

OUTR–

(Σ-Δ)

INR–

80kΩ

EMISSION

CTRL

BIAS

SHUTDOWN–R

SHUTDOWN–L

EDGE

INTERNAL

OSCILLATOR

EDGE

SDNR

SDNL

CONTROL

22nF

80kΩ

OUTL+

OUTL–

LEFT IN+

LEFT IN–

GAIN

CONTROL

FET

DRIVER

MODULATOR

(Σ-Δ)

INL+

INL–

GAIN

GND

GAIN

INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE

VOLTAGE IS APPROXIMATELY V /2.

GAIN = 6dB OR 18dB

Figure 1.

Rev. A

Document Feedback

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

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与SSM2356CBZ-RL相关器件

型号	品牌	获取价格	描述	数据表
SSM2356CBZ-RL7	ADI	获取价格	2 x 2W Filterless Class-D Stereo Audio Amplifier
SSM2375	ADI	获取价格	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2375CBZ-REEL	ADI	获取价格	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2375CBZ-REEL7	ADI	获取价格	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2377	ADI	获取价格	Filterless, High Efficiency, Mono 2.5 W Class-D Audio Amplifier Pop-and-click suppression
SSM2377ACBZ-R7	ADI	获取价格	Filterless, High Efficiency, Mono 2.5 W Class-D Audio Amplifier Pop-and-click suppression
SSM2377ACBZ-RL	ADI	获取价格	Filterless, High Efficiency, Mono 2.5 W Class-D Audio Amplifier Pop-and-click suppression
SSM2380	ADI	获取价格	Filterless, Stereo, Class-D Audio Amplifier
SSM2380CBZ-REEL	ADI	获取价格	2 x 2 W, Filterless, Stereo, Class-D Audio Amplifier with ALC + I2C
SSM2380CBZ-REEL7	ADI	获取价格	2 x 2 W, Filterless, Stereo, Class-D Audio Amplifier with ALC + I2C

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