Datasheet > RT9120M

RT9120M

更新时间： 2024-04-09 19:02:24

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
64页	1777K
描述
2x20W, Inductor-Less I2S-input, Low Noise, High-Efficiency Closed-Loop General-Purpose Class-D Digital Audio Amplifier with DRC Control

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RT9120M 数据手册

RT9120M

2x20W, Inductor-Less I²S-input, Low Noise, High-Efficiency

Closed-Loop General-Purpose Class-D Digital Audio

Amplifier with DRC Control

General Description

Features

⚫ Wide Input Supply Range: 4.5V to 26.4V

The RT9120M is a high efficiency, I2S-input, stereo

channel audio power amplifier delivering 2x20W into 8

BTL speaker loads. It can deliver over 92% power

efficiency and eliminate the need for heat-sink.

⚫ Support 1.8V, 3.3V I/O

⚫ I S, LJ, RJ, TDM Digital Audio Interface

⚫ 2x20W at into 8 BTL at 20V

⚫ 2x9W at into 8 BTL at 12V

⚫ SNR Up to 108dB

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, and undervoltage protections and report

error status.

⚫ THD + N is 0.03% at 1W

⚫ 45V Noise Floor

⚫ Efficiency Up to 92% at 2x10W for 8

⚫ Sampling Frequency from 8kHz to 192kHz

⚫ Built-In Anti-Pop Function for BTL BD

Modulations

The RT9120M is a 3-wired device receiving all clocks

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

Right-justified and TDM formats. It can support both

master and slave mode with wide input sampling rate

from 8kHz to 192kHz. A fully programmable data path

routes these channels to the internal speaker drivers.

⚫ Flexible Input Mixer

⚫ Programmable Coefficients for DRC Filters and

Supporting Multi-Compression Ratios

⚫ Built-In DC Blocking Filters

⚫ Built-in Thermal Fold Back Control

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

DCP

The RT9120M features one band DRC and flexible

input mixer, and power limiting.

Ordering Information

RT9120M

⚫ Filter-Less Application

⚫ VQFN-32L Thermally-Enhanced Package

⚫ RoHS Compliant and Halogen Free

Package Type

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

Lead Plating System

G: Green (Halogen Free and Pb Free)

Applications

⚫ LCD-TV

Note:

⚫ Monitors

Richtek products are:

⚫ Home Audio

 RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.

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

⚫ Amusement Equipment

⚫ Electronic Music Equipment

is a registered trademark of Richtek Technology Corporation.

DS9120M-00 December 2022

www.richtek.com

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