WM8728SEDS-RV 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM8728SEDS-RV

24-bit, 192kHz Stereo DAC with Volume Control

Wolfson Microelectronics plc 

WM8728

Production Data

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range

DVDD

3.0

5.5

V

Analogue supply range

AVDD

3.0

5.5

V

Ground

AGND, DGND

0

V

Difference DGND to AGND

-0.3

0

+0.3

V

Analogue supply current

AVDD = 5V

19

mA

Digital supply current

DVDD = 5V

8

mA

Analogue supply current

AVDD = 3.3V

18

mA

Digital supply current

DVDD = 3.3V

4

mA

Note:

DVDD supply needs to be active before AVDD supply for correct device power on reset. See Power Supply Timing section.

ELECTRICAL CHARACTERISTICS

Test Conditions

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

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

Digital Logic Levels (TTL Levels)

Input LOW level

VIL

0.8

Input HIGH level

VIH

2.0

Output LOW

VOL

IOL = 1mA

DGND + 0.3V

Output HIGH

VOH

IOH = 1mA

DVDD – 0.3V

Analogue Reference Levels

Reference voltage

VMID

(VREFP -

VREFN)/2 -

50mV

(VREFP -

VREFN)/2

(VREFP -

VREFN)/2 +

50mV

Potential divider resistance

RVMID

10k

DAC Output (Load = 10kΩ 50pF)

0dBFs Full scale output voltage

At DAC outputs

1.1 x

AVDD/5

SNR (Note 1,2,3)

A-weighted,

100

106

@ fs = 48kHz

SNR (Note 1,2,3)

A-weighted

106

@ fs = 96kHz

SNR (Note 1,2,3)

A-weighted

106

@ fs = 192kHz

SNR (Note 1,2,3)

A-weighted,

102

@ fs = 48kHz

AVDD, DVDD = 3.3V

SNR (Note 1,2,3)

A-weighted

102

@ fs = 96kHz

AVDD, DVDD = 3.3V

SNR (Note 1,2,3)

Non ‘A’ weighted @ fs

103

= 48kHz

THD (Note 1,2,3)

1kHz, 0dBFs

-97

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

PD, Rev 4.6, August 2008

6

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