WM8753LGEFL Wolfson Microelectronics, WM8753LGEFL Datasheet

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WM8753LGEFL

Manufacturer Part Number
WM8753LGEFL
Description
Manufacturer
Wolfson Microelectronics
Datasheets

Specifications of WM8753LGEFL

Case
QFN-48
Date_code
04

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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 component 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 256f
PLLs generate all required clocks for both Voice and Hi-Fi
converters. If audio system clocks already exist, the PLLs may
be committed 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.
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
s
rates like 12.288MHz and 24.576MHz. Internal
Hi-Fi and Telephony Dual Codec
FEATURES
Other features
APPLICATIONS
Hi-Fi DAC: interfaced over I
Audio sample rates:
DAC SNR 98dB, THD -84dB (‘A’ weighted @ 48kHz)
ADC SNR 95dB, THD -82dB (‘A’ weighted @ 48kHz)
On-chip Headphone Driver with cap-less output option
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 82dB, THD -74dB
Two Differential Microphone Interfaces
Low-noise bias supplied for electret microphones
On-chip PLLs supporting 12, 13, 19.2MHz and other clocks
Cap-less connection options to headphones, earpiece, spkr.
Low power, low voltage
7x7x0.9mm QFN package, 5x5x0.9mm BGA package
MP3 Player / Recorder mobile phone
Bluetooth stereo headset
8, 11.025, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96
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-
-
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40mW output power on 16 / 3.3V
with 16
with 10k load: SNR 94dB, THD –90dB
Dual ADCs support noise cancellation in external DSP
Programmable ALC / Noise Gate
1.8V to 3.6V (digital core: 1.42V to 3.6V)
power consumption <20mW all-on with 2V supplies
<12mW for PCM CODEC operation
load: SNR 90dB, THD –75dB
Copyright
Advanced Information, June 2004, Rev 3.1
2004 Wolfson Microelectronics plc
2
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WM8753L

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