WM8960 Datasheet, PDF (1/92 Pages) Wolfson Microelectronics plc – Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications

w
WM8960
Stereo CODEC with 1W Stereo Class D Speaker Drivers and
Headphone Drivers for Portable Audio Applications
DESCRIPTION
FEATURES
The WM8960 is a low power, high quality stereo CODEC
designed for portable digital audio applications.
Stereo class D speaker drivers provide 1W per channel into 8
loads with a 5V supply. Low leakage, excellent PSRR and
pop/click suppression mechanisms also allow direct battery
connection to the speaker supply. Flexible speaker boost
settings allow speaker output power to be maximised while
minimising other analogue supply currents.
A highly flexible input configuration for up to three stereo
sources is integrated, with a complete microphone interface.
External component requirements are drastically reduced as no
separate microphone, speaker or headphone amplifiers are
required. Advanced on-chip digital signal processing performs
automatic level control for the microphone or line input.
Stereo 24-bit sigma-delta ADCs and DACs are used with low
power over-sampling digital interpolation and decimation filters
and a flexible digital audio interface.
The master clock can be input directly or generated internally by
an onboard PLL, supporting most commonly-used clocking
schemes.
The WM8960 operates at analogue supply voltages down to
2.7V, although the digital supplies can operate at voltages down
to 1.71V to save power. The speaker supply can operate at up
to 5.5V, providing 1W per channel into 8 loads. Unused
functions can be disabled using software control to save power.
The WM8960 is supplied in a very small and thin 5x5mm QFN
package, ideal for use in hand-held and portable systems.
 DAC SNR 98dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V
 ADC SNR 94dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V
 Pop and click suppression
 3D Enhancement
 Stereo Class D Speaker Driver
- <0.1% THD with 1W per channel into 8 BTL speakers
- 70dB PSRR @217Hz
- 87% efficiency (1W output)
- Flexible internal switching clock
 On-chip Headphone Driver
- 40mW output power into 16 at 3.3V
- Capless mode support
- THD -75dB at 20mW, SNR 90dB with 16 load
 Microphone Interface
- Pseudo differential for high noise immunity
- Integrated low noise MICBIAS
- Programmable ALC / Limiter and Noise Gate
 Low Power Consumption
 Low Supply Voltages
- Analogue 2.7V to 3.6V (Speaker supply up to 5.5V)
- Digital core and I/O: 1.71V to 3.6V
 On-chip PLL provides flexible clocking scheme
 Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48
 5x5x0.9mm QFN package
APPLICATIONS
 Games consoles
 Portable media / DVD players
 Mobile multimedia
DGND
DCVDD
LINPUT3/
JD2
Jack Detect
LINPUT2
vmid
LINPUT1
RINPUT1
vmid
RINPUT2
-17.25 to +30dB,
0.75dB steps
+
-12 -> 6dB,
3dB steps,
mute
-
INPUT
PGAs
-
0, 13, 20,
29dB,
mute
0, 13, 20,
29dB,
mute
+
-17.25 to +30dB,
0.75dB steps
-12 -> 6dB,
3dB steps,
mute
-12 -> 6dB,
3dB steps,
mute
+
+
-12 -> 6dB,
3dB steps,
mute
ADC
ADC
RINPUT3/
JD3
MICBIAS
Jack Detect
50K 50K
ADCREF,
DACREF
DBVDD
ADC
DIGITAL
FILTERS
ALC
VOLUME
DAC
DIGITAL
FILTERS
DE-
EMPHASIS
3D ENHANCE
VOLUME
DIGITAL AUDIO
INTERFACE
A-law and u-law support
0 to -21dB,
3dB steps
0 to -21dB,
3dB steps
DAC
DAC
0 to -21dB,
3dB steps
0 to -21dB,
3dB steps
GPIO1
PLL
W
WM8960
LEFT
MIXER
MONO
MIXER
CLASS D
SPKVDD1
SPKVDD2
SPK_LP
-73 to 6dB
1dB steps,
mute
+BOOST
SPK_LN
-73 to 6dB
1dB steps,
mute
0dB / -6dB
HP_L
OUT3
RIGHT
MIXER
HP_R
-73 to 6dB
1dB steps,
mute
CLASS D
SPK_RN
CONTROL
INTERFACE
-73 to 6dB
1dB steps,
mute
+BOOST
SPK_RP
SPKGND1
SPKGND2
WOLFSON MICROELECTRONICS plc
Production Data, August 2013, Rev 4.2
Copyright 2013 Wolfson Microelectronics plc