SSM2529 판매점 - Class-D Audio Power Amplifier

Data Sheet

Digital Input, Mono 2 W,

Class-D Audio Power Amplifier

SSM2529

FEATURES

Filterless mono, digital input Class-D amplifier

I2C control interface

Serial digital audio interface supports common formats

(I2S, PCM, LJ, RJ, TDM1-16, PDM)

Supports wide range of sample rates: 8.0 kHz to 96.0 kHz

MCLK and BCLK can be provided by built-in phase-locked

loop (PLL)

Supports single power supply mode; DVDD can be provided

by built-in low dropout (LDO) regulator

2.5 V to 5.5 V SPKVDD operating supply voltage

1.08 V to 1.98 V DVDD operating supply voltage

Support off-chip volume control without I2C

2.4 W into 4 Ω and 1.4 W into 8 Ω at 5 V supply with <1% THD + N

Available in a 16-ball, 1.92 mm × 1.94 mm, 0.4 mm pitch WLCSP

Efficiency 95% at full scale into 8 Ω

Signal-to-noise ratio (SNR): 103 dB, A-weighted

Power supply rejection ratio (PSRR): >80 dB at 217 Hz

Digital volume control: −70 dB to +24 dB in 0.375 dB steps

Ultralow idle current

Autosample rate detection

Pop-and-click suppression

Short-circuit and thermal protection with programmable

autorecovery

Supports smart power-down when no input signal is detected

Power-on reset and UVLO voltage monitoring

Selectable ultralow EMI emission mode

Supports SPKVDD voltage monitor

Digital audio processing

7-band programmable equalizer

Programmable dynamic range compression (DRC) with

noise gate, expander, compressor, and limiter

APPLICATIONS

Mobile phones

Portable media players

Laptop PCs

Wireless speakers

Portable gaming

Navigation systems

GENERAL DESCRIPTION

The SSM2529 is a digital input, Class-D power amplifier that combines

a digital-to-analog converter (DAC), a low power audio specific

digital signal processor, and a sigma-delta (Σ-Δ) Class-D modulator.

This unique architecture enables extremely low real-world power

consumption from digital audio sources with excellent audio

performance. The SSM2529 is ideal for power sensitive applications,

such as mobile phones and portable media players, where system

noise can the corrupt small analog signals that are sent to an

analog input audio amplifier.

Using the SSM2529, audio data can be transmitted to the amplifier

over a standard digital audio serial interface, thereby significantly

reducing the effect of noise sources such as GSM interference or

other digital signals on the transmitted audio. The closed-loop

digital input design retains the benefits of an all-digital amplifier, yet

enables very good PSRR and audio performance. The three-level,

Σ-Δ Class-D modulator is designed to provide the least amount of

EMI, the lowest quiescent power dissipation, and the highest

audio efficiency without sacrificing audio quality.

The audio input is provided via a serial audio interface that can be

programmed to accept all common audio formats, including I2S,

TDM, and PDM. Control of the IC is provided via an I2C control

interface. An alternative to I2C control is standalone operation

mode, which allows several settings that are adjusted by off-chip

external resistors. The SSM2529 can accept a variety of input MCLK

frequencies and can use BCLK as the clock source in some

configurations. An integrated PLL can also provide the device

master clock.

The integrated DSP includes soft digital volume control circuits; a

de-emphasis, high-pass filter; a seven-band programmable equalizer;

and a programmable digital dynamic range compressor. In addition,

the part includes a feedforward speaker temperature prediction

module to protect the loudspeaker.

The SSM2529 supports single-supply mode, where DVDD is

provided by the on-chip LDO regulator, eliminating the need for an

external digital core supply.

The digital interface is very flexible and convenient. It can offer a

better system solution for other products whose sole audio source

is digital, such as wireless speakers, laptop PCs, portable digital

televisions, and navigation systems.

The SSM2529 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 16-ball, 1.92 mm × 1.94 mm

wafer level chip scale package (WLCSP).

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

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

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

SSM2529 반도체 회로 부품 판매점

Class-D Audio Power Amplifier

국내 전력반도체 판매점

일반적인 전자부품 판매점

관련 데이터시트