AK5351-VF 参数 Datasheet PDF下载

ASAHI KASEI

[AK5351]

DIGITAL FILTER CHARACTERISTICS

(Ta=25°C; VA,VD,VB=5.0V±10%; fs=48kHz)

Low Pass Filter characteristics

Passband

-0.005dB

-0.02dB

-0.06dB

(Note 8 )

Symbol

PB

min

0

typ

max

21.5

21.768

22.0

±0.005

80

0

29.3

1.0

2.9

6.5

Units

kHz

Stopband

(Note 9 )

Passband Ripple

(Note 10 )

Stopband Attenuation (Note 9 ,Note 11 )

Group Delay Distortion

Group Delay

(Note 12 )

High Pass Filter characteristics

Frequency Response

-3dB(Note 8 )

-0.5dB

-0.1dB

SB

PR

SR

∆

GD

GD

FR

26.5

kHz

dB

dB

us

1/fs

Hz

Hz

Hz

These frequencies scale with the sampling frequency(fs).

Stopband is 26.5kHz to 3.0455MHz at fs=48kHz.

Passband is DC to 21.5kHz at fs=48kHz.

The analog modulator samples the input at 3.072MHz for a system sampling rate of

fs=48kHz. These is no rejection of input signals at those bandwidths which are multiples of

the sampling frequency (n x 3.072MHz

±22kHz

;n=0,1,2,3…).

Note 12 : The calculation delay time occurred by digital filtering. This is the time from the input of

analog signal to setting the 20bit data of both channels to the output registers. GD=29.3/fs.

Note 8 :

Note 9 :

Note 10 :

Note 11 :

ELECTRICAL CHARACTERISTICS

„

Digital Characteristics

(Ta=25°C; VA,VD,VB=5.0V±10%)

Parameter

High-Level Input voltage

Low-Level Input voltage

High-Level Output voltage

Low-Level Output voltage

Input Leakage Current

Symbol

V

IH

V

IL

V

OH

V

OL

Iin

min

70%VD

-

VD-0.1

-

-

typ

-

-

-

-

-

max

-

30%VD

-

0.1

±10

Units

V

V

V

V

uA

Iout=-20uA

Iout=20uA

(Note 13 )

Note 13 : Except for pull-down and pull-up pins. TST1, TST2, TST3, TST4, SMODE2 pins have internal

pull-down device, HPFE pin has internal pull-up devive(Typ. 50kΩ)

0166-E-00

-7-

1997/4