Mfr Part #:

RT9125N-A

Mfr Name: Richtek

The RICHTEK RT9125N-A is a 30W stereo, inductor-less digital audio amplifier. It offers a 96kHz extended audio processing capability and a closed-loop system.

✓ Total Stock: 2,250 pcs

$ Price Range: $1.32

RT9125N-A Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Risen Electronics ✓ Non-Authorised Inventory information	2,250 pcs On Request	2250 pcs	On Request	1	On Request	On Request	On Request	On Request	2026-02-16 21:33:16

RT9125N-A Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Richtek
Efficiency	≥ 94%
Mounting Type	Surface Mount
Output Power	30W
Protection Features	UVLO, OVP, OCP, Thermal Foldback, OTP, and DCP
Sampling Frequency	8kHz to 96kHz

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RT9125N-A Description

Short technical summary and product information.

The RICHTEK RT9125N-A is a high-performance, 30W stereo audio amplifier designed for inductor-less applications. It features a closed-loop system with 96kHz extended audio processing, supporting a wide range of audio formats with bit resolutions up to 32 bits and sampling frequencies from 8kHz to 96kHz.

This amplifier boasts excellent audio performance, delivering 2x30W into an 8Ω load at 24V with a signal-to-noise ratio of ≥ 110dB and efficiency of ≥ 94%. It includes a built-in programmable DSP function with 36 programmable biquads for speaker equalization, programmable FIR filters, and DRC filters.

The RT9125N-A offers a flexible power supply range, with PVDD from 4.5V to 26.4V and DVDD/I/O at 1.8V or 3.3V. It also incorporates comprehensive self-protection features including UVLO, OVP, OCP, Thermal Foldback, OTP, and DCP, along with built-in DC blocking filters.

Packaged in a thermally-enhanced VQFN-48L package, this device is suitable for applications such as LCD-TVs, monitors, home audio systems, amusement equipment, and electronic music equipment.

RT9125N-A Quick Information

Product Type: Audio Amplifier

Canonical Name: RT9125N-A 30W Stereo Inductor-Less Digital Audio Closed-Loop System with 96kHz Extended Audio Processing

Subcategory: Class-D Audio Amplifier

RT9125N-A Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

RT9125N-A Estimated Pricing

Qty	Low	High
1+	$1.32	$1.32

Estimated market price range - modelled values for guidance only, not live distributor offers.

RT9125N-A Features

30W stereo output power.
Inductor-less digital audio design.
96kHz extended audio processing.
Flexible 4.5V to 26.4V power supply.
Built-in programmable DSP functions.

RT9125N-A Applications

Ideal for LCD-TVs and monitors.
Suitable for home audio systems.
Used in amusement equipment.
Applicable to electronic music gear.

RT9125N-A FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range for the RT9125N-A?

The PVDD supply accepts 4.5V to 26.4V. The digital and I/O supply (DVDD/I/O) can be 1.8V or 3.3V.

What package type does the RT9125N-A come in?

The RT9125N-A is housed in a 48-lead VQFN package for surface-mount assembly.

What is the signal-to-noise ratio (SNR) of the RT9125N-A?

The SNR is at least 110 dB.

What is the efficiency of the RT9125N-A amplifier?

The efficiency is at least 94%.

What audio sampling rates does the RT9125N-A support?

It supports sampling frequencies from 8 kHz to 96 kHz.

What bit resolution does the RT9125N-A support?

The device supports up to 32-bit resolution.

What protection features are included in the RT9125N-A?

It includes UVLO, OVP, OCP, thermal foldback, OTP, and DCP with DC blocking filters.