AK5355 查看數據表（PDF） - Asahi Kasei Microdevices

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AK5355

Low Power 16bit ∆ΣADC

Asahi Kasei Microdevices 

ASAHI KASEI

[AK5355]

FILTER CHARACTERISTICS

(Ta=25°C; VA, VD=2.1 ∼ 3.6V; fs=44.1kHz)

Parameter

Symbol

min

typ

max

Units

ADC Digital Filter (Decimation LPF):

Passband

(Note 5) ±0.1dB

PB

0

17.4

kHz

-1.0dB

20.0

kHz

-3.0dB

21.1

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

FR

3.4

Hz

-0.5dB

10

Hz

-0.1dB

22

Hz

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

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

Note 6. The calculated delay time caused by digital filtering. This time is from the input of an analog signal to setting the

16bit data of both channels to the output register of the ADC and includes the group delay of the HPF.

DC CHARACTERISTICS

(Ta=25°C; VA, VD=2.1 ∼ 3.6V)

Parameter

Symbol

min

typ

High-Level Input Voltage (Except for TST1

VIH

75%VD

-

pin)

VIL

-

-

Low-Level Input Voltage (Except for TST1 pin)

High-Level Output Voltage (Iout=-80µA)

VOH

VD-0.4

-

Low-Level Output Voltage (Iout=80µA)

VOL

-

Input Leakage Current (Note 7)

Iin

-

-

Note 7. TST1 pin is pulled-down internally (typ. 100kΩ)

max

-

25%VD

-

0.4

± 10

Units

V

V

V

V

µA

MS0113-E-01

-7-

2005/01

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