WM8728

Production Data

w

PD, Rev 4.6, August 2008

6

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

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital Logic Levels (TTL Levels)

Input LOW level

0.8

V

Input HIGH level

2.0

V

Output LOW

DGND + 0.3V

V

Output HIGH

DVDD – 0.3V

V

Analogue Reference Levels

Reference voltage

VMID

(VREFP -

VREFN)/2 -

50mV

(VREFP -

VREFN)/2

(VREFP -

VREFN)/2 +

50mV

V

Potential divider resistance

10k

Ω

DAC Output (Load = 10k

Ω 50pF)

0dBFs Full scale output voltage

At DAC outputs

1.1 x

AVDD/5

Vrms

SNR (Note 1,2,3)

A-weighted,

@ fs = 48kHz

100

106

dB

SNR (Note 1,2,3)

A-weighted

@ fs = 96kHz

106

dB

SNR (Note 1,2,3)

A-weighted

@ fs = 192kHz

106

dB

SNR (Note 1,2,3)

A-weighted,

@ fs = 48kHz

AVDD, DVDD = 3.3V

102

dB

SNR (Note 1,2,3)

A-weighted

@ fs = 96kHz

AVDD, DVDD = 3.3V

102

dB

SNR (Note 1,2,3)

Non ‘A’ weighted @ fs

= 48kHz

103

dB

THD (Note 1,2,3)

1kHz, 0dBFs

-97

dB

THD+N (Dynamic range, Note 2)

1kHz, -60dBFs

100

106

dB

DAC channel separation

100

dB