描述:
DESCRIPTION The WM8750L is a low power, high quality stereo codec designed for portable digital audio applications. The device integrates complete interfaces to stereo or mono microphones and a stereo headphone. External component requirements are drastically reduced as no separate microphone or headphone amplifiers are required. Advanced on-chip digital signal processing performs graphic equaliser, 3-D sound enhancement and automatic level control for the microphone or line input. FEATURES ?? DAC SNR 98dB (‘A’ weighted), THD -95B at 48kHz, 3.3V ?? ADC SNR 95dB (‘A’ weighted), THD -90dB at 48kHz, 3.3V ?? Complete Stereo / Mono Microphone Interface -? Programmable ALC / Noise Gate ?? On-chip 400mW BTL Speaker Driver (mono) ?? On-chip Headphone Driver -? >40mW output power on 16?/ 3.3V -? THD –80dB at 20mW, SNR 90dB with 16?load -? No DC blocking capacitors required (capless mode) ?? Separately mixed mono output ?? Digital Graphic Equaliser ?? Low Power -? 7mW stereo playback (1.8V / 1.5V supplies) -? 14mW record & 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 ?? 5x5x0.9mm QFN package APPLICATIONS ?? MP3 Player / Recorder ?? AAC/WMA/Multi-Format Player / Recorder ?? Minidisc Player / Recorder ?? Portable Digital Music Systems