[AK5388]

FILTER CHARACTERISTICS (fs=48kHz)

(Ta=25

°C; AVDD1/2=4.75 ∼ 5.25V; DVDD=3.0 ∼ 3.6V; DFS1 = “L”, DFS0 = “L”)

Parameter

Symbol

min

typ

max

Units

ADC Digital Filter (Decimation LPF):

Passband

(Note 11)

−0.01dB

−0.1dB

−3.0dB

−6.0dB

PB

0

-

-

-

22.0

23.8

24.4

21.6

-

-

-

kHz

kHz

kHz

kHz

Stopband

SB

27.9

kHz

Passband Ripple

PR

±0.01

dB

Stopband Attenuation

SA

80

dB

Group Delay

(Note 12)

GD

12.6

1/fs

Group Delay Distortion

ΔGD

±0.01

μs

ADC Digital Filter (HPF):

Frequency Response (Note 11)

−3dB

−0.1dB

FR

1.0

6.5

Hz

Hz

FILTER CHARACTERISTICS (fs=96kHz)

(Ta=25

°C; AVDD1/2=4.75 ∼ 5.25V; DVDD=3.0 ∼ 3.6V; DFS1 = “L”, DFS0 = “H”)

Parameter

Symbol

min

typ

max

Units

ADC Digital Filter (Decimation LPF):

Passband

(Note 11)

−0.01dB

−0.1dB

−3.0dB

−6.0dB

PB

0

-

-

-

44.2

47.6

48.9

43.3

-

-

-

kHz

kHz

kHz

kHz

Stopband

SB

55.9

kHz

Passband Ripple

PR

±0.01

dB

Stopband Attenuation

SA

80

dB

Group Delay

(Note 12)

GD

12.6

1/fs

Group Delay Distortion

ΔGD

±0.013

μs

ADC Digital Filter (HPF):

Frequency Response (Note 11)

−3dB

−0.1dB

FR

1.0

6.5

Hz

Hz

Note 11. The passband and stopband frequencies scale with fs. The reference frequency of these responses is 1kHz.

Note 12. The calculated delay time induced by digital filtering. This time is from the input of an analog signal to the

setting of 24bit data both channels to the ADC output register for ADC.

Rev. 0.3

2007/10

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