Datasheet > MAX98396

MAX98396

更新时间： 2024-12-01 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
172页	2523K
描述
20V、数字输入、DG类放大器，具有I/V检测和防掉电功能

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MAX98396

20V Digital Input Class-DG Amplifier with I/V

Sense and Brownout Prevention

General Description

Benefits and Features

The MAX98396 is a high-efficiency, mono Class-DG

speaker amplifier with industry-leading quiescent power

featuring I/V sense, brownout-prevention engine (BPE),

and dynamic-headroom tracking (DHT). The IC enables

ultrasound applications by providing support for sample

● Wide Input Supply Range (3.0V to 20V)

● Class-DG Operation Enables Industry-Leading

Quiescent Power

• 12.7mW at V

= 12V , V

= 3.8V

PVDD

VBAT

• 18mW at V

= 19V, V

= 5.0V

VBAT

PVDD

rates up to 192kHz, a higher passband (for f > 50kHz),

● Ultra-Low Noise Floor

• 15.5μV Output Noise

and a bypass path for the ultrasound signals through the

amplifier so it is not attenuated by the audio processing.

Precision output current and voltage monitoring (I/V

sense) enables the host device to run speaker protection

algorithms. Spread-spectrum modulation (SSM) and edge

rate control minimize EMI and eliminate the need for the

output filtering found in traditional Class-D devices.

RMS

• 118dB Dynamic Range

● Low Distortion

• -82dB THD+N at 1W into 8Ω, f = 1kHz

• -76dB THD+N at 1W into 8Ω, f = 6kHz

● Output Power at 1% THD+N:

• 20W into 8Ω, V

• 19W into 4Ω, V

= 19V

= 14V

PVDD

To achieve industry-leading quiescent power, the Class-

DG amplifier employs two supply rails VBAT (3V to 5.5V)

and PVDD (3V to 20V) to supply the speaker amplifier.

The Class-DG amplifier switches between the two supply

rails depending on the input signal level and/or the supply

headroom. The brownout-prevention engine in the device

allows it to reduce its contribution to the overall system

power consumption by either attenuating or limiting the

amplifier output when the device supply drops below a set

of programmable thresholds. Additionally, as the power

supply voltage varies due to sudden transients and declin-

ing battery life, DHT automatically optimizes the headroom

available to the Class-DG amplifier to maintain consistent

distortion and listening levels.

● 60W Peak Output Power into 4Ω, V

● Speaker Amplifier Efficiency:

= 19V

PVDD

• 87% at 1W into 8Ω, V

• 83% at 1W into 4Ω, V

• 83% at 1W into 8Ω, V

= 12V, V

= 19V, V

= 3.8V

= 5.0V

PVDD

VBAT

• 91% at 20W into 8Ω, V

= 19V, V

= 5.0V

PVDD

VBAT

● Class-D EMI Reduction Enables Filterless Operation

● Spread-Spectrum Modulation

● Switching-Edge Rate Control

● Integrated Speaker Current and Voltage Sense do not

Require External Components

● Flexible Brownout-Prevention Engine

The device provides a PCM interface for audio data and

● I S/16-Channel TDM and I C Digital Interfaces

● Playback Support for 16-, 24-, and 32-Bit Data Words

● Playback and I/V Sense Support Sample Rates up to

192kHz

a standard I C interface for control data communication.

The PCM interface supports audio playback using I S,

left-justified, and TDM audio data formats. A unique clock-

ing structure eliminates the need for an external master

clock for PCM communication, which reduces pin count

and simplifies board layout. Enabling thermal foldback au-

tomatically reduces the output power when the tempera-

ture exceeds a user specified threshold. This allows for

uninterrupted music playback even at high ambient tem-

peratures. Traditional thermal protection is also available

in addition to robust overcurrent protection.

● Audio Processing Bypass Path

● Dynamic-Headroom Tracking Maintains a Consistent

Listening Experience

● Extensive Click-and-Pop Suppression

● 35-Bump, WLP (0.4mm Pitch)

Ordering Information appears at end of data sheet.

The device is available in a 0.4mm pitch, 35-bump wafer-

level package (WLP). The device operates over the ex-

tended -40°C to +85°C temperature range.

Applications

• Mobile Speakers • Smart Speakers • Smart IoT • Tablets

• Notebook Computers • Soundbars

SMBus is a trademark of Intel Corp.

19-101016; Rev 1; 4/21

12 3 4 5 6 7...172

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与MAX98396相关器件

型号	品牌	获取价格	描述	数据表
MAX98397	ADI	获取价格	28V Digital Input, Class-DG Amplifier with IVSENSE, Ultra-Low IQ, and Brownout Prevention
MAX983CPA	MAXIM	获取价格	Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators
MAX983CPA+	MAXIM	获取价格	Comparator, 2 Func, 10000uV Offset-Max, 300000ns Response Time, PDIP8, 0.300 INCH, PLASTIC
MAX983CSA	MAXIM	获取价格	Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators
MAX983CSA+	MAXIM	获取价格	Comparator, 2 Func, 10000uV Offset-Max, 300000ns Response Time, PDSO8, 0.150 INCH, SOIC-8
MAX983CSA-T	MAXIM	获取价格	Comparator, 2 Func, 10000uV Offset-Max, 300000ns Response Time, PDSO8, 0.150 INCH, SOIC-8
MAX983CUA	MAXIM	获取价格	Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators
MAX983CUA+T	MAXIM	获取价格	Comparator, 2 Func, 10000uV Offset-Max, 300000ns Response Time, PDSO8, MICRO, SOP-8
MAX983CUA-T	MAXIM	获取价格	Comparator, 2 Func, 10000uV Offset-Max, 300000ns Response Time, PDSO8, MICRO, SOP-8
MAX983EPA	MAXIM	获取价格	Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators

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