Production Data

WM8533

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PD, July 2012, Rev 4.0

7

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

TEST CONDITIONS

TOTAL

(mA)

(mW)

(mA)

(mW)

(mA)

(mW)

(mA)

(mW)

Off

No clocks applied

SYS_ENA [1:0]=00

0.7

2.31

0.9

2.97

0.05

0.09

1.65

5.37

fs=48kHz, MCLK=256fs

Standby

SYS_ENA [1:0]=01

0.2

0.66

2.0

6.6

0.1

0.18

2.3

7.44

Playback

SYS_ENA [1:0]=11

4.4

14.52

6.0

19.8

0.1

0.18

10.5

34.5

fs=96kHz, MCLK=256fs

Standby

SYS_ENA [1:0]=01

0.2

0.66

2.8

9.24

0.1

0.18

3.1

10.08

Playback

SYS_ENA [1:0]=11

4.9

16.17

8.5

28.05

0.1

0.18

13.5

44.4

fs=192kHz, MCLK=128fs

Standby

SYS_ENA [1:0]=01

0.2

0.66

2.8

9.24

0.1

0.18

3.1

10.08

Playback

SYS_ENA [1:0]=11

4.9

16.17

8.5

28.05

0.1

0.18

13.5

44.4