WM8766(2004) Ver la hoja de datos (PDF) - Wolfson Microelectronics plc

Número de pieza

componentes Descripción

fabricante

WM8766
(Rev.:2004)

24-bit, 192kHz 6-Channel DAC

Wolfson Microelectronics plc 

WM8766

Production Data

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

Digital supply range

DVDD

2.7

3.6

Analogue supply range

AVDD, VREFP

2.7

5.5

Ground

AGND, VREFN, DGND

0

Difference DGND to AGND

-0.3

0

+0.3

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

UNIT

V

V

V

V

ELECTRICAL CHARACTERISTICS

Test Conditions

AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

Digital Logic Levels (CMOS Levels)

Input LOW level

VIL

0.3 x DVDD

Input HIGH level

VIH

Output LOW

VOL

Output HIGH

VOH

Analogue Reference Levels

IOL=1mA

IOH= -1mA

0.7 x DVDD

0.9 x DVDD

0.1 x DVDD

Reference Voltage

VVMID

VREFP/2

Potential Divider Resistance

RVMID

(VREFP to VMID) and

133

(VMID to VREFN)

DAC Performance (Load = 10kΩ, 50pF)

0dBFs Full Scale Output

Voltage

1.0 x

VREFP/5

SNR (Note 1,2,4)

A-weighted,

95

103

@ fs = 48kHz

SNR (Note 1,2,4)

A-weighted

101

@ fs = 96kHz

SNR (Note 1,2,4)

A-weighted

101

@ fs = 192kHz

SNR (Note 1,2,4)

A-weighted

101

@ fs = 48kHz, AVDD =

3.3V

SNR (Note 1,2,4)

A-weighted

99

@ fs = 96kHz, AVDD =

3.3V

Dynamic Range (Note 2,4)

DNR

A-weighted, -60dB full

95

103

scale input

Total Harmonic Distortion (THD)

1kHz, 0dBFs

-90

-80

Mute Attenuation

1kHz Input, 0dB gain

100

DAC Channel Separation

100

Power Supply Rejection Ratio

PSRR

1kHz 100mVpp

50

20Hz to 20kHz

45

100mVp-p

Supply Current

Analogue Supply Current

AVDD, VREFP = 5V

13.8

Digital Supply Current

DVDD = 3.3V

11.0

UNIT

V

V

V

V

V

kΩ

Vrms

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

mA

mA

w

PD Rev 4.1 July 2005

6

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