ASAHI KASEI

[AK5354]

MS0054-E-01

2001/01

- 5 -

FILTER CHARACTERISTICS

(Ta=25

°C; VA=2.1 ∼ 3.3V, VD=1.8 ∼ 3.3; fs=44.1kHz)

Parameter

Symbol

min

typ

max

Units

ADC Digital Filter (Decimation LPF):

Passband

(Note 5)

±0.1dB

-1.0dB

-3.0dB

PB

0

20.0

21.1

17.4

kHz

kHz

kHz

Stopband

(Note 5)

SB

27.0

kHz

Passband Ripple

PR

±0.1

dB

Stopband Attenuation

SA

65

dB

Group Delay

(Note 6)

GD

17.0

1/fs

Group Delay Distortion

∆GD

0

µs

ADC Digital Filter (HPF):

Frequency Response (Note 5)

-3dB

-0.5dB

-0.1dB

FR

3.4

10

22

Hz

Hz

Hz

Note:5. The passband and stopband frequencies scale with fs (sampling frequency).

For examples, PB=0.454 x fs(@ADC: -1.0dB), PB=0.454 x fs(@DAC: -0.1dB).

Note: 6. The calculating delay time which occurred by digital filtering. This time is from the input of analog signal to

setting the 20bit data of both channels to the output register for ADC and include group delay of HPF.

DC CHARACTERISTICS

(Ta=25

°C; VA=2.1 ∼ 3.3V, VD=1.8 ∼ 3.3V)

Parameter

Symbol

min

Typ

max

Units

High-Level Input Voltage

Low-Level Input Voltage

VIH

VIL

75

%VD

-

-

-

-

25

%VD

V

V

High-Level Output Voltage

(Iout=-80

µA)

Low-Level Output Voltage

(Iout=80

µA)

VOH

VOL

VD-0.4

-

--

0.4

V

V

Input Leakage Current

Iin

-

-

± 10

µA