WM8766

Production Data

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PD Rev 4.1 July 2005

6

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range

DVDD

2.7

3.6

V

Analogue supply range

AVDD, VREFP

2.7

5.5

V

Ground

AGND, VREFN, DGND

0

V

Difference DGND to AGND

-0.3

0

+0.3

V

Note: Digital supply DVDD must never be more than 0.3V greater than AVDD for normal operation of the device .

ELECTRICAL CHARACTERISTICS

Test Conditions

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital Logic Levels (CMOS Levels)

Input LOW level

0.3 x DVDD

V

Input HIGH level

0.7 x DVDD

V

Output LOW

0.1 x DVDD

V

Output HIGH

0.9 x DVDD

V

Analogue Reference Levels

Reference Voltage

VREFP/2

V

Potential Divider Resistance

(VREFP to VMID) and

(VMID to VREFN)

133

k

Ω

DAC Performance (Load = 10k

Ω

Ω

Ω

Ω, 50pF)

0dBFs Full Scale Output

Voltage

1.0 x

VREFP/5

Vrms

SNR (Note 1,2,4)

A-weighted,

@ fs = 48kHz

95

103

dB

SNR (Note 1,2,4)

A-weighted

@ fs = 96kHz

101

dB

SNR (Note 1,2,4)

A-weighted

@ fs = 192kHz

101

dB

SNR (Note 1,2,4)

A-weighted

@ fs = 48kHz, AVDD =

3.3V

101

dB

SNR (Note 1,2,4)

A-weighted

@ fs = 96kHz, AVDD =

3.3V

99

dB

Dynamic Range (Note 2,4)

DNR

A-weighted, -60dB full

scale input

95

103

dB

Total Harmonic Distortion (THD)

1kHz, 0dBFs

-90

-80

dB

Mute Attenuation

1kHz Input, 0dB gain

100

dB

DAC Channel Separation

100

dB

1kHz 100mVpp

50

dB

Power Supply Rejection Ratio

PSRR

20Hz to 20kHz

100mVp-p

45

dB

Supply Current

Analogue Supply Current

AVDD, VREFP = 5V

13.8

mA

Digital Supply Current

DVDD = 3.3V

11.0

mA