Class D Audio

Class D Audio is part of CODICOs product range.

Efficient Amplification of Audio Signals

Class D Audio amplifiers offer one major advantage, namely their efficiency. Whereas in Class A or Class B audio amplifiers the transistors operate in the linear range and thus not very efficient, in Class D amplifiers the signals are conducted to the transistors in a pulsed manner, so that these are either fully conductive or non-conductive.

This means that a Class D amplifier, also known as digital amplifiers can achieve an efficiency of up to 90% (compared to 20-50% for Class A and Class B). This means that less power dissipation is required, which means that the Class D topology allows the production of significantly smaller amplifiers, e.g. for mobile applications.

Samples Contacts

How Class D Amplifiers Work

An analog input signal is converted into a sequence of pulses by a suitable method (e.g. PWM) in the class D amplifier. These are amplified by the transistors and must then to be smoothed by a low-pass filter. However, the technique of amplification using high-frequency pulses can lead to interference with other parts of the circuit, so that attention must be paid to good filtering and an optimized layout.

CODICO offers Class D Audio ICs in various performance levels, as mono or stereo, single-ended or asa BTL (bridge-tight-load) variant.

Manufacturers & Contacts

The MPS company logo.


Monolithic Power Systems, Inc. (MPS) is amongst the globally leading suppliers in the power-management area. The broad portfolio contains eg DC/DC-converters and -modules, PMICs, battery-management-ICs, current-sensors, AC/DC-converter-ICs, motordrivers as well as angle-sensors and, newly added, even inductors for the DC/DC-converters.  Target markets are mainly industrial, automotive, telecom-infrastructure, cloud-computing and consumer-applications.

Find here an overview of MPS DC DC Converter

Infos Samples


At the moment there are no products matching the selection. In the meanwhile you can contact our product manager to get further information.

Samples Request


For a fast time-to-market: The latest samples and evaluation boards are waiting for you. You are welcome to send us your sample requests by phone or e-mail.

We are gladly there for you!