WM8753L
WM8753L is Hi-Fi and Telephony Dual CODEC manufactured by Wolfson Microelectronics.
DESCRIPTION
The WM8753L is a low power, high quality stereo CODEC with integrated Voice CODEC designed for portable digital telephony applications such as mobile phone, or headset with hi-fi playback capability.
The device integrates dual interfaces to two differentially connected microphones, and includes drivers for speakers, headphone and earpiece. External ponent requirements are reduced as no separate microphone or headphone amplifiers are required, and Cap-less connections can be made to all loads. Advanced on-chip digital signal processing performs tone control, Bass Boost and automatic level control for the microphone or line input through the ADC. The two ADCs may be used to support Voice noise cancellation in a partnering DSP, or for stereo recording.
The WM8753L hi-fi DAC can operate as a master or a slave, with various master clock frequencies including 12 or 24MHz for USB devices, 13MHz or 19.2MHz for cellular systems, or standard 256fs rates like 12.288MHz and 24.576MHz. Internal PLLs generate all required clocks for both Voice and hi-fi converters. If audio system clocks already exist, the PLLs may be mitted to alternative uses.
The WM8753L operates at a nominal supply voltage of 2V, although the digital core can operate at voltages down to 1.42V to save power, and the maximum for all supplies is 3.6 Volts. Different sections of the chip can also be powered down under software control.
FEATURES
- Hi-fi DAC: interfaced over I2S type link
- Audio sample rates:
8, 11.025, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96
- DAC SNR 98d B, THD -84d B (‘A’ weighted @ 48k Hz)
- ADC SNR 95d B, THD -82d B (‘A’ weighted @ 48k Hz)
- On-chip Headphone Driver with cap-less output option
- 40m W output power on 16 / 3.3V
- with 16 load: SNR 90d B, THD
- 75d B
- with 10k load: SNR 94d B, THD
- 90d B
- On-chip speaker driver with 0.5W into 8R
- Voice CODEC: interfaced over Voice interface
- supports sample rates from 8ks/s to 48ks/s
- ADC and DAC SNR 82d B, THD -74d B
- Two Differential...
