WM8782SEDS データシートの表示（PDF） - Wolfson Microelectronics plc

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WM8782SEDS

24-Bit, 192kHz Stereo ADC

Wolfson Microelectronics plc 

WM8782

RECOMMENDED OPERATING CONDITIONS

PARAMETER

Digital supply range

Analogue supply range

Ground

Operating temperature range

SYMBOL

DVDD

AVDD

DGND,AGND

TA

TEST CONDITIONS

WM8782SEDS,

WM8782SEDS/R

WM8782SEDS,

WM8782SEDS/R

WM8782SEDS,

WM8782SEDS/R

Notes:

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

MIN

2.7

2.7

-40

Production Data

TYP

MAX

UNIT

3.6

V

5.5

V

0

V

+85

C

ELECTRICAL CHARACTERISTICS

Test Conditions

DVDD = 3.3V, AVDD = 5.0V, TA = +25oC, 1kHz signal, A-weighted, fs = 48kHz, MCLK = 256fs, 24-bit audio data, Slave Mode

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

Vrms

Input resistance, using

recommended external resistor

network on p22.

10

kΩ

Input capacitance

20

pF

Signal to Noise Ratio

SNR

weighted,

93

100

dB

(see Terminology note 1,2,4)

@ fs = 48kHz

Unweighted,

98

dB

@ fs = 48kHz

weighted,

98

dB

@ fs = 48kHz,

AVDD = 3.3V

Signal to Noise Ratio

SNR

weighted,

98

dB

(see Terminology note 1,2,4)

@ fs = 96kHz

Unweighted,

98

dB

@ fs = 96kHz

weighted,

98

dB

@ fs = 96kHz

AVDD = 3.3V

Total Harmonic Distortion

THD

1kHz, -1dB Full Scale

-93

dB

@ fs = 48kHz

1kHz, -1dB Full Scale

-93

dB

@ fs = 96kHz

1kHz, -1dB Full Scale

-92

dB

@ fs = 192kHz

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

50

dB

to AVDD, DVDD

w

PD, April 2010, Rev 4.7

6

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