MT6905

Features

MT6905 is a Class-D audio power amplifier with 5W output power (2-Ω speaker) and no output filtering. Total harmonic distortion is less than 0.07%, signal-to-noise ratio is high (90dB), and efficiency is up to 90%. The unique design can effectively reduce EMI interference, without any external filter components such as magnetic beads, and can work directly with FM radio. Excellent suppression of startup pop noise characteristics. It can perfectly replace Class AB audio amplifiers without adding heat sinks. The extremely low quiescent current and shutdown mode current are very suitable for audio amplification applications in battery-powered systems. MT6905 adjusts the system gain and thus the volume through an external input resistor, and supports both single-ended and differential inputs.

Parameters

. High output power: 4.8W@ VDD=PVDD=5.5V, RL=2Ω, THD+N=10%

. 2.5V～5.5V single power supply

. Fully differential input

. External resistor volume control

. No LC filter required, ultra-low electromagnetic interference (EMI), can work directly with FM radio, no need for additional filtering components such as magnetic beads

. Total harmonic distortion plus noise (THD+N) is less than 0.1%

. Excellent power-on and power-off noise (Rop-sound) suppression

. Very low quiescent operating current and shutdown mode current

. Very few external components, saving space and cost

. Over temperature and over current/short circuit protection

. Lead-free SOP8 package

Description: 1x5W filter-free, FM compatible

Vin(V): 2.5V～5.5V

Application

Portable media players, portable audio products, navigation devices, game consoles, cordless phones