ASAHI KASEI

[AK4563A]

MS0067-E-02

2004/12

- 7 -

FILTER CHARCTERISTICS

(Ta=25

°C; VA, VD=2.3 ∼ 3.0V; VT=1.5∼ 3.0V; fs=48kHz; De-emphasis = OFF)

Parameter

Symbol

min

typ

max

Units

ADC Digital Filter (Decimation LPF):

Passband (Note 10)

±0.1dB

-1.0dB

-3.0dB

PB

0

-

-

21.8

23.0

18.9

-

-

kHz

kHz

kHz

Stopband (Note 10)

SB

29.4

kHz

Passband Ripple

PR

±0.1

dB

Stopband Attenuation

SA

65

dB

Group Delay (Note 11)

GD

-

17.0

-

1/fs

Group Delay Distortion

∆GD

0

µs

ADC Digital Filter (HPF):

Frequency Response (Note 10)

-3.0dB

-0.56dB

-0.15dB

FR

-

-

-

3.7

10

20

-

-

-

Hz

Hz

Hz

DAC Digital Filter:

Passband (Note 10)

±0.1dB

-6.0dB

PB

0

-

24.0

21.7

-

kHz

kHz

Stopband (Note 10)

SB

26.2

kHz

Passband Ripple

PR

±0.06

dB

Stopband Attenuation

SA

43

dB

Group Delay (Note 11)

GD

-

14.8

-

1/fs

Group Delay Distortion

∆GD

0

µs

DAC Digital Filter + Analog Filter:

Frequency Response: 0

∼ 20.0kHz

FR

±0.5

dB

Note 10. The passband and stopband frequencies scale with fs. For example, ADC: PB=0.454 x fs(@-1.0dB), DAC:

PB=0.454 x fs(@-0.1dB).

Note 11. The calculating delay time which occurred by digital filtering. The time is from the input of analog signal to

setting the 16bit data of both channels to the output register for ADC.

For DAC, this time is from setting the 16bit data of both channels on input register to the output of analog signal.

DC CHARACTERISTICS

(Ta=25

°C; VA, VD=2.3 ∼ 3.0V, VT=1.5 ∼ 3.0V)

Parameter

Symbol

min

typ

max

Units

Input High Level Voltage

Input Low Level Voltage

VIH

VIL

80

%VT

-

-

-

-

20

%VT

V

V

Output High Level Voltage: Iout=-400

µA

Output Low Level Voltage: Iout=400

µA

VOH

VOL

VT-0.4

-

-

-

-

0.4

V

V

Input Leakage Current

Iin

-

-

±10

µA