DESCRIPTION

The WM8956 is a low power, high quality stereo DAC designed for portable multimedia applications.

Stereo class D speaker drivers provide 1W per channel into 8Ω loads with a 5V supply. Low leakage, excellent PSRR and pop/click suppression mechanisms also allow direct battery connection to the speaker supply. Flexible speaker boost settings allow speaker output power to be maximised while minimising other analogue supply currents.

FEATURES

• DAC SNR 99dB (‘A’ weighted), THD -87dB at 48kHz, 3.3V

• Pop and click suppression

• 3D Enhancement

• Stereo Class D Speaker Driver

- <0.1 THD with 1W per channel into 8 BTL speakers

- 70dB PSRR @217Hz

- 87 efficiency (1W output)

- Flexible internal switching clock

• On-chip Headphone Driver

- 40mW output power into 16 at 3.3V

- Capless mode support

- THD+N -70dB at 20mW, SNR 99dB with 16 load

• Microphone Interface

- Pseudo differential for high noise immunity

- Integrated low noise MICBIAS

• Low Power Consumption

- 16mW headphone playback (2.7V / 1.8V supplies)

• Low Supply Voltages

- Analogue 2.7V to 3.6V (Speaker supply up to 5.5V)

- Digital core and I/O: 1.71V to 3.6V

• On-chip PLL provides flexible clocking scheme

• Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48

• 5x5x0.9mm QFN package

APPLICATIONS

• Mobile multimedia

• Portable media / DVD players

• Games consoles