WM8782

Production Data

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PD, April 2010, Rev 4.7

6

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range

DVDD

WM8782SEDS,

WM8782SEDS/R

2.7

3.6

V

Analogue supply range

AVDD

WM8782SEDS,

WM8782SEDS/R

2.7

5.5

V

Ground

DGND,AGND

0

V

Operating temperature range

WM8782SEDS,

WM8782SEDS/R

-40

+85

C

Notes:

1.

Digital supply DVDD must never be more than 0.3V greater than AVDD.

ELECTRICAL CHARACTERISTICS

Test Conditions

unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ADC Performance – WM8782SEDS, WM8782SEDS/R (+25˚C)

Full Scale Input Signal Level

(for ADC 0dB Input)

1.0

Input resistance, using

recommended external resistor

network on p22.

10

kΩ

Input capacitance

20

pF

Signal to Noise Ratio

(see Terminology note 1,2,4)

SNR

weighted,

@ fs = 48kHz

93

100

dB

Unweighted,

@ fs = 48kHz

98

dB

weighted,

@ fs = 48kHz,

AVDD = 3.3V

98

dB

Signal to Noise Ratio

(see Terminology note 1,2,4)

SNR

weighted,

@ fs = 96kHz

98

dB

Unweighted,

@ fs = 96kHz

98

dB

weighted,

@ fs = 96kHz

AVDD = 3.3V

98

dB

Total Harmonic Distortion

THD

1kHz, -1dB Full Scale

@ fs = 48kHz

-93

dB

1kHz, -1dB Full Scale

@ fs = 96kHz

-93

dB

1kHz, -1dB Full Scale

@ fs = 192kHz

-92

dB

Dynamic Range

DNR

-60dBFS

93

100

dB

Channel Separation

(see Terminology note 4)

1kHz Input

90

dB

Channel Level Matching

1kHz signal

0.1

dB

Channel Phase Deviation

1kHz signal

0.0001

Degree

Power Supply Rejection Ratio

PSRR

1kHz 100mVpp, applied

to AVDD, DVDD

50

dB