WM8959 datasheet(149/155 Pages) WOLFSON

Part #	WM8959

Description	Mobile Multimedia DAC with Dual-Mode Class AB/D Speaker Driver

PDF	155 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

Logo

149 / 155 page

Pre-Production

WM8959

PP, May 2008, Rev 3.1

149

DAC FILTER RESPONSES

DAC STOPBAND ATTENUATION

The DAC digital filter type is selected by the DAC_SB_FILT register bit as shown in Table 82.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R10 (0Ah)

DAC_SB_FI

Selects DAC filter characteristics

0 = Normal mode

1 = Sloping stopband mode

Table 82 DAC Filter Selection

MAGNITUDE(dB)

-150

-130

-110

-90

-70

-50

-30

-10

0.5

1.5

2.5

Frequency (fs)

MAGNITUDE(dB)

-0.005

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Frequency (fs)

Figure 87 DAC Digital Filter Frequency Response (Normal

Mode)

Figure 88 DAC Digital Filter Ripple (Normal Mode)

MAGNITUDE(dB)

-150

-130

-110

-90

-70

-50

-30

-10

0.5

1.5

2.5

Frequency (fs)

MAGNITUDE(dB)

-0.5

-0.45

-0.4

-0.35

-0.3

-0.25

-0.2

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Frequency (fs)

Figure 89 DAC Digital Filter Frequency Response (Sloping

Stopband Mode)

Figure 90 DAC Digital Filter Ripple (Sloping Stopband

Mode)

WM8959 Datasheet(PDF) 149 Page - Wolfson Microelectronics plc

WM8959 Datasheet(HTML) 149 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL