ASAHI KASEI

[AK4385]

MS0246-E-01

2006/01

- 5 -

SHARP ROLL-OFF FILTER CHARACTERISTICS

(Ta = 25

°C; VDD = 4.75 ∼ 5.25V; fs = 44.1kHz; DEM = OFF; SLOW = “0”)

Parameter

Symbol

min

typ

max

Units

Digital filter

Passband

±0.05dB (Note 9)

-6.0dB

PB

0

-

22.05

20.0

-

kHz

kHz

Stopband

(Note 9)

SB

24.1

kHz

Passband Ripple

PR

± 0.02

dB

Stopband Attenuation

SA

54

dB

Group Delay

(Note 10)

GD

-

19.3

-

1/fs

Digital Filter + SCF

Frequency Response

20.0kHz

40.0kHz

80.0kHz

fs=44.1kHz

fs=96kHz

fs=192kHz

FR

FR

FR

-

-

-

± 0.2

± 0.3

+0.1/-0.6

-

-

-

dB

dB

dB

Notes: 9. The passband and stopband frequencies scale with fs(system sampling rate).

For example, PB=0.4535×fs (@

±0.05dB), SB=0.546×fs.

10. The calculating delay time which occurred by digital filtering. This time is from setting the 16/24bit data

of both channels to input register to the output of analog signal.

SLOW ROLL-OFF FILTER CHARACTERISTICS

(Ta = 25

°C; AVDD, DVDD = 4.75~5.25V; fs = 44.1kHz; DEM = OFF; SLOW = “1”)

Parameter

Symbol

min

typ

max

Units

Digital Filter

Passband

±0.04dB

(Note 11)

-3.0dB

PB

0

-

18.2

8.1

-

kHz

kHz

Stopband

(Note 11)

SB

39.2

kHz

Passband Ripple

PR

± 0.005

dB

Stopband Attenuation

SA

72

dB

Group Delay

(Note 10)

GD

-

19.3

-

1/fs

Digital Filter + SCF

Frequency Response

20.0kHz

40.0kHz

80.0kHz

fs=44.kHz

fs=96kHz

fs=192kHz

FR

FR

FR

-

-

-

+0/-5

+0/-4

+0.1/-5

-

-

-

dB

dB

dB

Note: 11. The passband and stopband frequencies scale with fs.

For example, PB = 0.185×fs (@

±0.04dB), SB = 0.888×fs.

DC CHARACTERISTICS

(Ta=25

°C; VDD=4.75 ∼ 5.25V)

Parameter

Symbol

min

typ

max

Units

High-Level Input Voltage

Low-Level Input Voltage

VIH

VIL

2.2

-

-

-

-

0.8

V

V

High-Level Output Voltage

(Iout=-80µA)

Low-Level Output Voltage

(Iout=80µA)

VOH

VOL

VDD-0.4

-

-

-

0.4

V

V

Input Leakage Current

Iin

-

-

± 10

µA