XWM8722EDS 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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XWM8722EDS

Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs

Wolfson Microelectronics plc 

WM8722

Advanced Information

ELECTRICAL CHARACTERISTICS

Test Conditions

AVDD, DVDD = 5V, AGND, DGND = 0V, TA = +25oC, fs = 48kHz, SCKI = 256fs unless otherwise stated.

PARAMETER

SYMBOL

DAC Circuit Specifications

SNR (Note 1 and 2)

THD (Note 2)

Dynamic range (Note 2)

Passband

Stopband

Passband ripple

Stopband Attenuation

Channel Separation

Gain mismatch

channel-to-channel

TEST CONDITIONS

AVDD, DVDD = 5V, fs = 48kHz

AVDD, DVDD = 3.3V, fs = 48kHz

AVDD, DVDD = 5V, fs = 96kHz

0dB

-60dB

±0.25dB

-3dB

f > 0.55fs

MIN

92

0.4535fs

TYP

102

100

-95

102

0.491fs

±0.25

-

100

±1

MAX

-80

±5

Digital Logic Levels

Input LOW level

VIL

Input HIGH level

VIH

Output LOW level

VOL

Output HIGH level

VOH

Analogue Output Levels

Output level

IOL = 2mA

IOH = 2mA

2.0

AVDD - 0.3V

0.8

AVSS + 0.3V

Into 10kohm, full scale 0dB,

1.1

(5V supply)

Into 10kohm, full scale 0dB,

0.66

(3.3V supply)

Minimum resistance load

To midrail or AC coupled

1

(5V supply)

To midrail or AC coupled

600

(3.3V supply)

Maximum capacitance

load

Output DC level

Reference Levels

5V or 3.3V

100

AVDD/2

Potential divider

resistance

Voltage at CAP

POR

POR threshold

Analogue Mixer Specifications

AVDD to CAP and CAP to AGND

90

AVDD/2

1.2

1.6

2.0

SNR

THD

Dynamic Range

Channel Separation

Output voltage

Output current source

Output current sink

92

100

1V rms output, Into 10kohm, 50pF

load

-96

-92

100

100

Into 10kohm

1.5

2

3

1.5

2

UNIT

dB

dB

dB

dB

dB

dB

dB

%FSR

V

V

Vrms

Vrms

kohms

ohms

pF

V

kohms

V

dB

dB

dB

dB

Vrms

mA

mA

Input voltage, MIXINL/R

AC coupled

2

Vrms

MIXINL/R input resistance

MIXINL/R input resistance

0dB

(at 12dB trim)

50

kohm

20

kohm

WOLFSON MICROELECTRONICS LTD

AI Rev 1.5 May 2000

4

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