Production Data
WM8533
TERMINOLOGY
1. Signal-to-Noise Ratio (dB) – SNR is a measure of the difference in level between the maximum theoretical full scale
output signal and the output with no input signal applied.
2. Total Harmonic Distortion (dB) – THD is the level of the rms value of the sum of harmonic distortion products relative
to the amplitude of the measured output signal.
3. All performance measurements carried out with 20kHz low pass filter, and where noted an A-weighted filter. Failure to
use such a filter will result in higher THD and lower SNR readings than are found in the Electrical Characteristics. The
low pass filter removes out of band noise; although it is not audible it may affect dynamic specification values.
4. Mute Attenuation – This is a measure of the difference in level between the full scale output signal and the output with
mute applied.
TYPICAL PERFORMANCE
TYPICAL POWER CONSUMPTION
Test Conditions
LINEVDD=AVDD=3.3V, DBVDD=1.8V, LINEGND=AGND=0V, TA=+25°C, Slave Mode, quiescent (no signal)
TEST CONDITIONS
IAVDD
ILINEVDD
IDBVDD
TOTAL
(mA)
(mW)
(mA)
(mW)
(mA)
(mW)
(mA)
(mW)
No clocks applied
Off
0.7
2.31
0.9
2.97
0.05
0.09
1.65
5.37
SYS_ENA [1:0]=00
fs=48kHz, MCLK=256fs
Standby
SYS_ENA [1:0]=01
SYS_ENA [1:0]=11
0.2
4.4
0.66
2.0
6.0
6.6
0.1
0.1
0.18
0.18
2.3
7.44
34.5
Playback
14.52
19.8
10.5
fs=96kHz, MCLK=256fs
Standby
SYS_ENA [1:0]=01
SYS_ENA [1:0]=11
0.2
4.9
0.66
2.8
8.5
9.24
0.1
0.1
0.18
0.18
3.1
10.08
44.4
Playback
16.17
28.05
13.5
fs=192kHz, MCLK=128fs
Standby
SYS_ENA [1:0]=01
SYS_ENA [1:0]=11
0.2
4.9
0.66
2.8
8.5
9.24
0.1
0.1
0.18
0.18
3.1
10.08
44.4
Playback
16.17
28.05
13.5
PD, July 2012, Rev 4.0
7
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
