Datasheet > SSM2375CBZ-REEL7

SSM2375CBZ-REEL7

更新时间： 2024-11-03 19:59:31

品牌	Logo	应用领域
亚德诺 - ADI		放大器商用集成电路
页数	文件大小	规格书
17页	430K
描述
Filterless High Efficiency Mono 3 W Class-D Audio Amplifier

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SSM2375CBZ-REEL7 数据手册

Filterless, High Efficiency,

Mono 3 W Class-D Audio Amplifier

SSM2375

Data Sheet

Spread-spectrum pulse density modulation (PDM) is used to

provide lower EMI-radiated emissions compared with other

Class-D architectures. The inherent randomized nature of

spread-spectrum PDM eliminates the clock intermodulation

(beating effect) of several amplifiers in close proximity.

FEATURES

Filterless Class-D amplifier with spread-spectrum

Σ-Δ modulation

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 + N)

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

>100 dB signal-to-noise ratio (SNR)

High PSSR at 217 Hz: 80 dB

Flexible gain adjustment pin: 0 dB to 12 dB in 3 dB steps

Fixed input impedance: 80 kΩ

User-selectable ultralow EMI emissions mode

Single-supply operation from 2.5 V to 5.5 V

20 nA shutdown current

The SSM2375 includes an optional modulation select pin

(ultralow EMI emissions mode) that significantly reduces the

radiated emissions at the Class-D outputs, particularly above

100 MHz. In ultralow EMI emissions mode, the SSM2375

can pass FCC Class B radiated emission testing with 50 cm,

unshielded speaker cable without any external filtering.

The device also includes a highly flexible gain select pin that

allows the user to select a gain of 0 dB, 3 dB, 6 dB, 9 dB, or

12 dB. The gain selection feature improves gain matching

between multiple SSM2375 devices within a single application

as compared to using external resistors to set the gain.

Short-circuit and thermal protection with autorecovery

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

Pop-and-click suppression

APPLICATIONS

Mobile phones

MP3 players

The SSM2375 has a micropower shutdown mode with a typical

shutdown current of 20 nA. Shutdown is enabled by applying

a logic low to the

pin.

Portable electronics

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

This suppression circuitry minimizes voltage glitches at the

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

on activation and deactivation.

GENERAL DESCRIPTION

The SSM2375 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.

Other features that simplify system-level integration of the

SSM2375 include input low-pass filtering to suppress out-of-band

DAC noise interference to the PDM modulator and fixed-input

impedance to simplify component selection across multiple

platform production builds.

The SSM2375 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.

The SSM2375 operates with 93% efficiency at 1.4 W into 8 Ω

or with 85% efficiency at 3 W into 3 Ω from a 5.0 V supply and

has an SNR of >100 dB.

The SSM2375 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 halide-free, 9-ball,

1.5 mm × 1.5 mm wafer level chip scale package (WLCSP).

FUNCTIONAL BLOCK DIAGRAM

POWER SUPPLY

2.5V TO 5.5V

10µF

0.1µF

VDD

SSM2375

22nF

OUT+

IN+

IN–

GAIN

CONTROL

FET

DRIVER

MODULATOR

IN+

IN–

OUT–

(Σ-Δ)

22nF

EDGE

GND

INTERNAL

OSCILLATOR

EDGE

CONTROL

EMISSION

CONTROL

BIAS

SHUTDOWN

GAIN

GAIN SELECT

GAIN = 0dB, 3dB, 6dB, 9dB, OR 12dB

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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SSM2375CBZ-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
SSM2375CBZ-REEL	ADI	完全替代	Filterless High Efficiency Mono 3 W Class-D Audio Amplifier
SSM2319CBZ-R2	ADI	完全替代	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier
SSM2319CBZ-REEL	ADI	类似代替	Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier

与SSM2375CBZ-REEL7相关器件

型号	品牌	获取价格	描述	数据表
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
SSM23LPT	CHENMKO	获取价格	SCHOTTKY BARRIER RECTIFIER
SSM23PT	CHENMKO	获取价格	SCHOTTKY BARRIER RECTIFIER
SSM2402	ADI	获取价格	Dual Audio Analog Switches
SSM-2402	ADI	获取价格	Dual Audio Analog Switches

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