WM8746 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM8746

24-bit, 192kHz 6-Channel DAC with Volume Control

Wolfson Microelectronics plc 

WM8746

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

Digital supply range

DVDD

3.0

Analogue supply range

AVDD1, AVDD2

3.0

Ground

AGND, GR0, GR1, DGND

Difference DGND to AGND

-0.3

Analogue supply current

Digital supply current

Analogue supply current

Digital supply current

Analogue supply current

Digital supply current

AVDD = 5V

DVDD = 5V

AVDD = 3.3V

DVDD = 3.3V

Power down, stop clock

Power down, stop clock

Note:

1. The digital supply voltages must not exceed the analogue supply voltages.

TYP

0

0

58

22

57

11

0.4

0.09

Production Data

MAX

5.5

5.5

+0.3

UNIT

V

V

V

V

mA

mA

mA

mA

mA

mA

AC ELECTRICAL CHARACTERISTICS

Test Conditions

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

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

Digital Logic Levels (TTL Levels)

Input LOW level

VIL

Input HIGH level

VIH

0.8

2.0

Output LOW

Output HIGH

VOL

IOL = 2mA

0.4

VOH

IOH = 2mA

2.4

Analogue Reference Levels

Reference voltage

VCAP

(AVDD2-

GR2)/2

Potential divider resistance

RCAP

25k

DAC Output (Load = 10kΩ 50pF)

0dBFs Full scale output voltage

At DAC outputs

1.1 x

AVDD1/5

SNR (Note 1,2,3)

A-weighted,

100

106

@ fs = 48kHz

SNR (Note 1,2,3)

A-weighted

105

@ fs = 96kHz

SNR (Note 1,2,3)

A-weighted

105

@ fs = 192kHz

SNR (Note 1,2,3)

A-weighted,

103

@ fs = 48kHz

AVDD=DVDD=3.3V

SNR (Note 1,2,3)

A-weighted

103

@ fs = 96kHz

AVDD=DVDD=3.3V

SNR (Note 1,2,3)

Non ‘A’ weighted @ fs

103

= 48kHz

AVDD=DVDD=5V

THD (Note 1,2,3)

1kHz, 0dBFs

-95

THD+N (Dynamic range, Note 2)

1kHz, -60dBFs

-100

-106

DAC channel separation

100

UNIT

V

V

V

V

V

Ω

Vrms

dB

dB

dB

dB

dB

dB

dB

dB

dB

w

March 2006, PD Rev 4.0

6

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