6

MS0103-E-00

MS0546-E-00

ASAHI KASEI

[AK5371A]

2007/02

Analog Characteristics

Ta=25

°C,VA=VD=3.3V, Signal Frequency=1kHz, Sampling Frequency Fs=44.1kHz BW=20Hz – 20kHz, Test Mode; unless

otherwise specified

Parameter

Min

typ

Max

Units

Stereo ADC (2 channel)

Resolution

16

bits

S/N (A weight)

(IPGA are set to 0dB)

USB Normal Mode

84

dBA

S/(N+D)

(-1dB analog input)

(IPGA are set to 0dB)

USB Normal Mode

70

dB

Full Scale Input Voltage

1.5

1.7

1.9

Vp-p

Gain Control Range

-31

+24

dB

Step Size

0

1.0

2.0

dB

Input Impedance @AMPR2I/AMPL2I pin

40

K

Ω

Gain range

+20

dB

Input Impedance @MICR/MICL

10

20

K

Ω

S/N (A weight) @MICR/MICL to AMPR1O/AMPL1O

77

dBA

MIC Bias (VA)

Output Voltage

when 4.7K

Ω resistor connected

2.0

Vdc

Output Impedance

200

500

Ω

Output Current

2

mA

MIC Bias (Buffer Amp)

Output Voltage

when 300

Ω resistor connected

1.9

2.2

2.5

Vdc

Output Current

2

mA

Power Supplies

Analog

Digital

Total

Power Down (Suspend Mode)

17

9

26

0

25

15

40

160

mA

mA

mA

uA

FILTER CHARACTERISTICS

(Ta=25

°C VA, VD =3.0 - 3.6 V ; fs = 44.1 kHz)

Parameter

Symbol

Min

typ

Max

Units

A/D Digital Filter

(Decimation LPF)

Passband

+/- 0.2 dB

PB

0

17.64

KHz

Stopband

SB

26.5

KHz

Passband Ripple

PR

+/- 0.2

dB

Stopband Attenuation

SA

68

dB

Group Delay

GD

0.5

ms

A/Ddigital Filter (HPF)

Frequency Response

-3 dB

-0.5 dB

-0.1 dB

FR

6.85

19.2

44.9

Hz

Hz

Hz