AK5352-VF 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK5352-VF

96kHz Sampling ∆Σ 20bit ADC

Asahi Kasei Microdevices 

ASAHI KASEI

[AK5352]

DIGITAL FILTER CHARACTERISTICS

(Ta=25°C; VA,VD,VB=5.0V±5%; fs=48kHz)

Low Pass Filter characteristics

Symbol

min

typ

max

Passband

-0.005dB

(Note 12 )

PB

0

21.5

-0.02dB

21.768

-0.06dB

22.0

Stopband

(Note 13 )

SB

26.5

Passband Ripple

(Note 14 )

PR

±0.005

Stopband Attenuation (Note 13 ,Note 15 )

SR

80

Group Delay Distortion

∆GD

0

Group Delay

(Note 16 )

GD

29.3

High Pass Filter characteristics

Frequency Response -3dB (Note 12 )

FR

1.0

-0.5dB

2.9

-0.1dB

6.5

Note 12 : These frequencies scale with the sampling frequency(fs).

Note 13 : Stopband is 26.5kHz to 3.0455MHz at fs=48kHz.

Note 14 : Passband is DC to 21.5kHz at fs=48kHz.

Note 15 : 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 16 : 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.

Units

kHz

kHz

dB

dB

us

1/fs

Hz

Hz

Hz

ELECTRICAL CHARACTERISTICS

„ Digital Characteristics

(Ta=25°C; VA,VD,VB=5.0V±5%)

Parameter

Symbol

min

typ

max

Units

High-Level Input voltage

VIH

70%VD

-

-

V

Low-Level Input voltage

VIL

-

-

30%VD

V

High-Level Output voltage Iout=-20uA

Low-Level Output voltage Iout=20uA

VOH

VD-0.1

-

VOL

-

-

-

V

0.1

V

Input Leakage Current

(Note 17 )

Iin

-

-

±10

uA

Note 17 : 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 device. (TYP.50kΩ)

0155-E-00

-8-

1997/1

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