DA7201: 3.1W Mono Filterless Class D Speaker Driver

DA7201 is a powerful, high efficient, low EMI class D speaker driver that can drive 3.1W @ 5.5V into 4Ω loads suitable for a variety of low power, digital portable audio products.

DA7201 consists of an analogue loop filter, PWM modulator and a H-Bridged switched power output stage that delivers 3.1W into 4Ω load @ 5.5V making speaker sound ‘louder’.

A spread-spectrum triangular wave is generated internally to drive the PWM modulator to allow high efficiency ~ 90% and low EMI performance.

The analogue loop filter integrated on chip improves power supply rejection and harmonic distortion for the H-bridge output stage.

A fixed gain of 6db is available but a pair of external resistors can be used to vary output signal level to the speaker output.

The DA7201 can enable direct battery connection to the speaker and also has a low power consumption shutdown mode.

DA7201 includes pop/click suppression circuitry to reduce audible pops/clicks at the speaker output.

The DA7201 is available in 9 bump WLCSP package which is ideal for applications such as personal navigation devices, speaker accessories, mobile phones, portable media players and handheld gaming that require small footprints.