ASAHI KASEI

[AK4626A]

MS0397-E-00

2005/06

- 10 -

FILTER CHARACTERISTICS

(Ta=25

°C; AVDD, DVDD=4.5∼5.5V; TVDD=2.7∼5.5V; fs=48kHz)

Parameter

Symbol

min

typ

max

Units

ADC Digital Filter (Decimation LPF):

Passband

(Note 14)

±0.1dB

-0.2dB

-3.0dB

PB

0

-

-

20.0

23.0

18.9

-

-

kHz

kHz

kHz

Stopband

SB

28

kHz

Passband Ripple

PR

±0.04

dB

Stopband Attenuation

SA

68

dB

Group Delay

(Note 15)

GD

16

1/fs

Group Delay Distortion

∆GD

0

µs

ADC Digital Filter (HPF):

Frequency Response

(Note 14)

-3dB

-0.1dB

FR

1.0

6.5

Hz

Hz

DAC Digital Filter:

Passband

(Note 14)

-0.1dB

-6.0dB

PB

0

-

24.0

21.8

-

kHz

kHz

Stopband

SB

26.2

kHz

Passband Ripple

PR

±0.02

dB

Stopband Attenuation

SA

54

dB

Group Delay

(Note 15)

GD

19.2

1/fs

DAC Digital Filter + Analog Filter:

Frequency Response:

0

∼ 20.0kHz

40.0kHz

(Note 16)

80.0kHz

(Note 16)

FR

FR

FR

±0.2

±0.3

±1.0

dB

dB

dB

Notes:

14. The passband and stopband frequencies scale with fs.

For example, 21.8kHz at –0.1dB is 0.454 x fs.

15. The calculating delay time which occurred by digital filtering. This time is from setting the input of analog signal to

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

For DAC, this time is from setting the 20/24bit data of both channels on input register to the output of analog

signal.

16. 40.0kHz; fs=96kHz , 80.0kHz; fs=192kHz.

DC CHARACTERISTICS

(Ta=25

°C; AVDD, DVDD=4.5∼5.5V; TVDD=2.7∼5.5V)

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

(SDTO, LRCK, BICK pin:

Iout=-100µA)

(DZF1, DZF2/OVF pins:

Iout=-100µA)

Low-Level Output Voltage

(SDTO, DZF1, DZF2/OVF pins: Iout= 100µA)

(SDA, LRCK, BICK pin:

Iout= 3mA)

VOH

VOH

VOL

VOL

TVDD-0.5

AVDD-0.5

-

-

-

-

-

-

-

-

0.5

0.4

V

V

V

V

Input Leakage Current

(Note 17)

Iin

-

-

±10

µA

Note 17: TST2 pin has an internal pull-down device, nominally 100kohm.