Datasheet > RT9120S

RT9120S

更新时间： 2025-07-26 17:01:43

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
71页	1895K
描述
30W, Stereo, Ultra Low Noise, High-Efficiency, Inductor-Less, I2S General-Purpose Class-D Audio Amplifier with DRC Control

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RT9120S 数据手册

RT9120S

30W, Stereo, Ultra Low Noise, High-Efficiency, Inductor-Less,

I S General-Purpose Class-D Audio Amplifier with DRC

Control

General Description

Features

⚫ Wide Input Supply Range: 4.5V to 26.4V

The RT9120S is a high efficiency, I S-input, stereo

channel audio power amplifier delivering maximum

2x30W into 8 BTL speaker loads. It can deliver over

94% power efficiency at 2x10W and eliminate the need

for heatsink.

⚫ Support 1.8V, 3.3V I/O

⚫ Configurable 4 Different IC Slave Address

⚫ 1x53W, 1.0 Mode (4, 22V, THD + N = 1%)

⚫ 2x30W, 2.0 Mode (8, 24V, THD + N = 1%)

⚫ SNR Up to 113dB

The built-in anti-pop functions can reduce the speaker’s

pop noise under all kind of scenarios. Built-in protection

circuits can provide over-temperature, overcurrent,

overvoltage, undervoltage protections and report error

status.

⚫ THD + N is 0.03% at 1W

⚫ 35V Noise Floor

⚫ Efficiency Up to 94% at 2x10W for 8

⚫ R

Low to 90m

DS(ON)

⚫ PWM Switching Frequency up to 1.536MHz

⚫ Sampling Frequency from 8kHz to 192kHz

⚫ Support TDM Format for Multi-Channel

⚫ Built-In Anti-Pop Function

The RT9120S is a 3-wired device receiving all clocks

from external sources with standard I S, Left-justified,

Right-justified or TDM formats. It can support wide input

sampling rate from 8kHz to 192kHz.

⚫ Programmable Coefficients for DRC Filters

⚫ Built-In DC Blocking Filters

The RT9120S features one band DRC and flexible input

mixer, and power clipping.

⚫ Built-in Thermal Fold Back control

⚫ Protection Features: UVLO, OVP, OCP, OTP and

DCP

Ordering Information

RT9120S

⚫ Inductor-Less Application

Package Type

QV: VQFN-32L 5x5 (V-Type)

⚫ VQFN-32L Thermally-Enhanced Package

⚫ RoHS Compliant and Halogen Free

Lead Plating System

G: Green (Halogen Free and Pb Free)

Applications

⚫ LCD-TV

Note:

Richtek products are:

⚫ Monitors

 RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

⚫ Home Audio

⚫ Amusement Equipment

⚫ Electronic Music Equipment

is a registered trademark of Richtek Technology Corporation.

DS9120S-00

December 2022

www.richtek.com

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