AD1881 Просмотр технического описания (PDF) - Analog Devices

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AD1881

AC'97 SoundMAX® Codec

Analog Devices 

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AD1881

DIGITAL DECIMATION AND INTERPOLATION FILTERS*

Parameter

Passband

Passband Ripple

Transition Band

Stopband

Stopband Rejection

Group Delay

Group Delay Variation

Over Passband

Min

Typ

0

0.4 x Fs

0.6 x Fs

-74

.Max

0.4 XFs

:to.09

0.6 x Fs

00

12/Fs

0.0

Units

Hz

dB

Hz

Hz

dB

sec

/lS

ANALOG- TO-DIGITAL CONVERTERS

Parameter

Min

Typ

.Max

Units

OBSOLETE Resolution

Total Hannonic Distortion (THD)

Dynamic Range (-60 dB Input THD+N Referenced to Full Scale, A-Weighted)

Signal-to-Intennodulation Distortion* (CCIF Method)

ADC Crossta1k*

line Inputs (Input 1..,Ground R, Read R; Input R, Ground 1..,Read L)

LINE_IN to Other

Gain Error (Full-Scale Span Relative to Nominal Input Voltage)

Interchannel Gain Mismatch (Difference of Gain Errors)

ADC Offset Error

85

I

16

Bits

0.02

%

-74

dB

87

dB

85

dB

-100

-90

dB

-90

-85

dB

:t1O

%

:to.5

dB

:t5

mV

DIGITAL- TO-ANALOG CONVERTERS

Parameter

Resolution

Total Hannonic Distortion (THD) LINE_Our,

LNLVL_Our

Dynamic Range (-60 dB Input THD+ N Referenced to Full Scale, A-Weighted)

Min

Typ

16

85

90

.Max

0.02

-74

Units

Bits

%

dB

dB

Signal-to-Intennodulation Distortion* (CCIF Method)

85

dB

Gain Error (Full-Scale Span Relative to Nominal Input Voltage)

:t1O

%

Interchannel Gain Mismatch (Difference of Gain Errors)

:to.5

dB

DAC Crossta1k* (Input 1..,Zero R, Measure R_Our; Input R, Zero 1..,

-80

dB

Measure L_OUI)

Total Audible Out-of-Band Energy (Measured from 0.6 x Fs to 20 kHz)*

I

-40

IdB

ANALOG OUTPUT

Parameter

Full-Scale Output Voltage

(LINE_Our, LNLVL_OUI)

Output Impedance*

External Load Impedance*

Output Capacitance*

External Load Capacitance

VREF

V REF_OUT

VREF_Our Current Drive

Mute Click (Muted Output Minus Unmuted

*Gu..."'ntccd,not tested

Specificationssubject to change without notice.

Midscale DAC Output)

Min

Typ

1

2.83

10

15

2.0

2.2

2.2

:ts

.Max

500

100

2.4

5

Units

Vrms

Vp-p

11

!ill.

pF

pF

V

V

mA

mV

REV. 0

-3-

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