WM8960
w
Stereo CODEC with 1W Stereo Class D Speaker Drivers and
Headphone Drivers for Portable Audio Applications
DESCRIPTION
FEATURES
•
•
•
•
•
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
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 8Ω
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.
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•
•
•
<0.1% THD with 1W per channel into 8Ω BTL speakers
70dB PSRR @217Hz
87% efficiency (1W output)
Flexible internal switching clock
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•
On-chip Headphone Driver
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.
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•
•
40mW output power into 16Ω at 3.3V
Capless mode support
THD -75dB at 20mW, SNR 90dB with 16Ω load
Microphone Interface
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•
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Pseudo differential for high noise immunity
Integrated low noise MICBIAS
Programmable ALC / Limiter & Noise Gate
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.
•
•
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
The master clock can be input directly or generated internally by
an onboard PLL, supporting most commonly-used clocking
schemes.
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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
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 8Ω loads. Unused
functions can be disabled using software control to save power.
APPLICATIONS
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Games consoles
Portable media / DVD players
Mobile multimedia
The WM8960 is supplied in a very small and thin 5x5mm QFN
package, ideal for use in hand-held and portable systems.
DGND
DCVDD
DBVDD
SPKVDD1
SPKVDD2
W
WM8960
0
to -21dB,
Jack Detect
3dB steps
LINPUT3/
JD2
CLASS D
SPK_LP
0
to -21dB,
3dB steps
SPK_LN
LINPUT2
-73 to 6dB
1dB steps,
mute
-12 -> 6dB,
3dB steps,
mute
LEFT
MIXER
+BOOST
-12 -> 6dB,
3dB steps,
mute
-17.25 to +30dB,
0.75dB steps
+
-
HP_L
DAC
DIGITAL
FILTERS
ADC
DAC
DAC
+
+
vmid
vmid
ADC
DIGITAL
FILTERS
-73 to 6dB
1dB steps,
mute
0, 13, 20,
29dB,
mute
LINPUT1
RINPUT1
DE-
EMPHASIS
INPUT
PGAs
MONO
MIXER
ALC
OUT3
HP_R
0, 13, 20,
29dB,
mute
0dB / -6dB
VOLUME
3D ENHANCE
VOLUME
-
ADC
+
-12 -> 6dB,
3dB steps,
mute
-17.25 to +30dB,
0.75dB steps
RIGHT
MIXER
-73 to 6dB
1dB steps,
mute
-12 -> 6dB,
3dB steps,
mute
RINPUT2
CLASS D
0
to -21dB,
SPK_RN
SPK_RP
3dB steps
0
to -21dB,
3dB steps
RINPUT3/
JD3
-73 to 6dB
1dB steps,
mute
Jack Detect
+BOOST
GPIO1
SPKGND1
SPKGND2
ADCREF,
DACREF
MICBIAS
DIGITAL AUDIO
INTERFACE
CONTROL
INTERFACE
PLL
50K
50K
A-law and u-law support
Production Data, February 2009, Rev 4.0
WOLFSON MICROELECTRONICS plc
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Copyright ©2009 Wolfson Microelectronics plc
全部评论(2)
2022-04-15 11:12:22likai11
WM8960好资料
2022-03-22 17:13:48王重阳
就是个英文手册，还屁的编程说明，忽悠人