WM8740

Production Data

w

PD, Rev 4.4, April 2010

6

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range

DVDD

-10%

3.3 to 5

+10%

V

Analogue supply range

AVDD

-10%

3.3 to 5

+10%

V

Ground

AGND, DGND

0

V

Difference DGND to AGND

-0.3

0

+0.3

V

Analogue supply current

AVDD = 5V

13

mA

Digital supply current

DVDD = 5V

19

mA

Analogue supply current

AVDD = 3.3V

12

mA

Digital supply current

DVDD = 3.3V

12

mA

Note:

DVDD must be equal to, or less than the AVDD supply (i.e. DVDD = AVDD = +5V; DVDD = AVDD = +3.3V; DVDD = +3.3V

AVDD = +5V).

ELECTRICAL CHARACTERISTICS

Test Conditions

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DAC Circuit Specifications

SNR

(See Note 1)

Mono fs @ 48kHz

120

dB

Stereo fs @ 48kHz

110

117

dB

Stereo fs @ 96kHz

116

dB

THD (full-scale)

(See Note 2)

Mono 0dB

-104

dB

Stereo 0dB

-95

-104

dB

THD+N (Dynamic range)

(See Note 2)

-60dB

117

dB

Filter Characteristics (Sharp Roll-off)

Passband

±0.0012 dB

0.4535fs

dB

Stopband

-3dB

0.491fs

Passband ripple

±0.0012

dB

Stopband attenuation

f > 0.5465fs

-82

dB

Delay time

30/fs

s

Filter Characteristics (Slow Roll-off)

Passband

±0.001dB

0.274fs

Stopband

-3dB

0.459fs

Passband ripple

±0.001

dB

Stopband attenuation

f > 0.732fs

-82

dB

Delay time

9/fs

s

Internal Analogue Filter

Bandwidth

-3dB

195

kHz

Passband edge response

20kHz

-0.043

dB

Digital Logic Levels

Input LOW level

0.8

Input HIGH level

2.0

V

Output LOW level

DGND + 0.3V

V

Output HIGH level

DVDD - 0.3V