M4670

DESCRIPTION

The M4670 is a fully integrated single-supply, high-efficiency

Class D switching audio amplifier, and it can provide 3W of output

power. Containing adjustable output gain chip with micro-power

shutdown mode, the M4670 has innovative modulation schemes

that eliminate the output filter wave devices and thus reduces the

requirement of external components helping to streamline the circuit

design and reduce board area.

By using delta-sigma modulation technique which handles

incoming analog signal, the M4670 can reduce the output noise and

total harmonic distortion.

Operating on a single 5V supply, the M4670 can be a continuous

average output of 2.3W of power to driver the 4Ω speaker, and the

total harmonic distortion and noise (THD+N) are less than 1%. High

power conversion efficiency of the M4670 can drive a larger load

speaker that is respectively comparable to the typical Class AB

amplifier. Its can be used with a 3.6V, 600mW power supply to

driver an 8Ω speaker, while the efficiency is as high as 88%.

The M4670 has a high output power characteristics that makes it

ideal for ultra-high-power walkie-talkies, mobile phones, hands-free

intercom systems and applications.

FEATURES

* Externally Configurable Gain

* No Output Filter Required for Inductive Loads

* Very Fast Turn on Time: 1.05ms (Typical)

* ‘Click and Pop’ Suppression Circuitry

* Micro-Power Shutdown Mode

* Short Circuit Protection

规格书M4670