RT9125 High-Efficiency I²C Input Stereo Audio Power Amplifier

Product Highlights > RT9125 High-Efficiency I²C Input Stereo Audio Power Amplifier

            RT9125 High-Efficiency I²C Input Stereo Audio Power Amplifier
                    The Richtek RT9125 stereo audio power amplifier delivers over 94% power efficiency and eliminates the need for a heat-sink
    

The Richtek RT9125 high-efficiency I²C input stereo audio power amplifier delivers 2 x 30 W into 8 Ω BTL speaker loads. It can deliver over 94% power efficiency and eliminates the need for a heat-sink. Built-in protection circuits can provide overtemperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), DC protection (DCP), and undervoltage protection (UVP) and report error status. The RT9125 is an I²C device receiving all clocks from external sources. A fully programmable data path routes these channels to the internal speaker drivers. The RT9125 features three-band DRC and flexible multi-band biquads for anti-clipping, power limiting, and speaker equalization. The recommended junction temperature range is -40°C to +150°C, and the ambient temperature range is -40°C to +85°C.

The EVB_RT9125N-A evaluation board is designed as a comprehensive toolkit for evaluating the performance and features of the RT9125 audio power amplifier. This evaluation board simplifies the process of testing and integrating the RT9125 into audio applications, ensuring its capabilities can be fully leveraged.

Features

Flexible power supply range:

PVDD from 4.5 V to 26.4 V
DVDD and I/O, 1.8 V or 3.3 V

Support wide range audio format:

Bit resolution up to 32-bit
Support TDM up to 32-bit
Sampling frequency from 8 kHz to 96 kHz

Excellent audio performance:

2 x 30 W at into 8 Ω BTL at 24 V
SNR ≥110 dB
Efficiency ≥94%

Class D speaker amplifier
Built-in programmable DSP function:

36 programmable biquads for speaker equalization
Programmable coefficients for DRC filters and supporting multi-compression ratios
Programmable 256-taps FIR