WM8912 查看數據表（PDF） - Wolfson Microelectronics plc

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产品描述 (功能)

生产厂家

WM8912

Ultra Low Power DAC with Headphone Driver for Portable Audio Applications

Wolfson Microelectronics plc 

WM8912

DIGITAL FILTER CHARACTERISTICS

PARAMETER

DAC Normal Filter

Passband

Passband Ripple

Stopband

Stopband Attenuation

DAC Sloping Stopband Filter

Passband

Passband Ripple

Stopband 1

Stopband 1 Attenuation

Stopband 2

Stopband 2 Attenuation

Stopband 3

Stopband 3 Attenuation

TEST CONDITIONS

+/- 0.05dB

-6dB

0.454 fs

F > 0.546 fs

+/- 0.03dB

+/- 1dB

-6dB

0.25 fs

f > 0.546 fs

f > 0.7 fs

F > 1.4 fs

MIN

0

0.546 fs

-50

0

0.25 fs

0.546 fs

-60

0.7 fs

-85

1.4 fs

-55

TYP

0.5 fs

0.5 fs

MAX

0.454 fs

+/- 0.03

0.25 fs

0.454 fs

+/- 0.03

0.7 fs

1.4 fs

Production Data

UNIT

dB

dB

dB

dB

dB

dB

DAC FILTERS

Mode

Group Delay

Normal

16.5 / fs

Sloping Stopband

18 / fs

TERMINOLOGY

1. Stop Band Attenuation (dB) – the degree to which the frequency spectrum is attenuated (outside audio band)

2. Pass-band Ripple – any variation of the frequency response in the pass-band region

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PD, Rev 4.0, September 2010

18

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