Part Datasheet Search > Interface ICs > Cirrus Logic > WM8988LGECN/V Datasheet PDF > WM8988LGECN/V Datasheet Pages 1/59
WM8988LGECN/V Datasheet - Cirrus Logic
| Manufacturer: | Cirrus Logic |
| Category: | Interface ICs |
| Case Package: | QFN-28 |
| Description: | Audio Codec 2ADC /2DAC 24Bit 28Pin QFN |
| Pictures: |
WM8988LGECN/VDatasheet PDF
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Stereo CODEC for Portable Audio Applications
http://www.cirrus.com
Copyright Cirrus Logic, Inc., 2008–2016
(All Rights Reserved)
Rev 4.2
DEC ‘16
WM8988
DESCRIPTION
The WM8988 is a low power, high quality stereo CODEC
designed for portable digital audio applications.
The device integrates complete interfaces to 2 stereo
headphone or line out ports. External component
requirements are drastically reduced as no separate
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.
The WM8988 can operate as a master or a slave, with
various master clock frequencies including 12 or 24MHz for
USB devices, or standard 256fs rates like 12.288MHz and
24.576MHz. Different audio sample rates such as 96kHz,
48kHz, 44.1kHz are generated directly from the master
clock without the need for an external PLL.
The WM8988 operates at supply voltages down to 1.8V,
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.
The WM8988 is supplied in a very small and thin 4x4mm
COL package, ideal for use in hand-held and portable
systems.
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 16 / 3.3V
- THD –80dB at 20mW, SNR 90dB with 16 load
Digital Graphic Equaliser
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
APPLICATIONS
Portable Multimedia players
Multimedia handsets
Handheld gaming
BLOCK DIAGRAM
LINSEL
ANALOGUE
MONO MIX
CONTROL
INTERFACE
CSB
SDIN
SCLK
MODE
WM8988
DCVDD DBVDDDGND
LMIXSEL
DAC
ROUT1VOL
LOUT1VOL
LOUT1
ROUT1
LOUT2
ROUT2
VREF
AVDD
AGND
VMID
50K50K
HPVDDHPGND
DAC
AUDIO
INTERFACE
ADCDAT
BCLK
MCLK
DACDAT
LRC
DIGITAL
FILTERS
VOLUME
DIGITAL
MONO MIX
ADC
ADC
DIGITAL
FILTERS
GRAPHIC
EQUALISER
BASS
BOOST
CLOCK
CIRCUITRY
LINPUT2
LINPUT1
LI2LO
RI2LO
LI2RO
RI2RO
LD2LO
RD2LO
LD2RO
RD2RO
LEFT
MIXER
RIGHT
MIXER
ROUT2VOL
LOUT2VOL
PGA
+ MIC
BOOST
M
U
X
M
U
X
DIFF.
INPUT
L1-R1 OR
L2-R2
DC MEASUREMENT
RINSEL
RMIXSEL
RINPUT2
RINPUT1
PGA
+ MIC
BOOST
M
U
X
M
U
X
DC MEASUREMENT
LCOM
(headphone / line output
(headphone / line output
(headphone / line output
(headphone / line output
HPCOM
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