Description

The WM8988L is a low power, high quality stereo CODEC designed for portable digital audio applications. It integrates complete interfaces to 2 stereo headphone or line out ports, reducing the need for external components such as separate headphone amplifiers. The on-chip digital signal processing capabilities include graphic equalizer, 3-D sound enhancement, and automatic level control for the microphone or line input.

Specifications and features

- DAC SNR: 100dB (‘A’ weighted), THD –90dB at 48kHz, 3.3V

- ADC SNR: 93dB (‘A’ weighted), THD -81dB at 48kHz, 3.3V

- Programmable ALC / Noise Gate

- 2x On-chip Headphone Drivers:

- >40mW output power on 16Ω/ 3.3V

- THD –80dB at 20mW, SNR 90dB with 16Ωload

- Digital Graphic Equalizer

- Low Power:

- 7mW stereo playback (1.8V / 1.5V supplies)

- 14mW record and playback (1.8V / 1.5V supplies)

- Low Supply Voltages:

- Analogue: 1.8V to 3.6V

- Digital core: 1.42V to 3.6V

- Digital I/O: 1.8V to 3.6V

- 256fs / 384fs or USB master clock rates: 12MHz, 24MHz

- Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96kHz generated internally from master clock

- 4x4mm COL package

Application Scenarios

- Portable Multimedia players

- Multimedia handsets

- Handheld gaming

Comparison

- Low power consumption

- Integrated interfaces for 2 stereo headphone or line out ports

- On-chip digital signal processing capabilities

- Not suitable for applications requiring higher power output