AK5370 Просмотр технического описания (PDF) - Asahi Kasei Microdevices

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AK5370

USB I/F A/D Converter

Asahi Kasei Microdevices 

ASAHI KASEI

Analog Characteristics

Ta=25°C, VA=VD=3.3V, Signal Frequency=1kHz, Sampling Frequency Fs=44.1kHz

Parameter

Min

typ

Mono ADC (1 channel)

Resolution

S/N (A weight)

(1st and 2nd MIC amplifier are set to 0dB)

76

84

S/(N+D)

(-0.5dB analog input)

(1st and 2nd MIC amplifier are set to 0dB)

62

70

MIC Amplifier (2nd Stage) <IPGA> Characteristics

Input Voltage

1.6

Gain Control Range

-58

Step Size

0

1.0

Input Impedance @AMP2I pin

20

MIC amplifier(1st Stage)

Gain range(defined by external resistors)

0

External Feedback Impedance

20

MIC Bias

Output Voltage

when 4.7KΩ resistor connected

0.9VA

Output Impedance

200

Output Current

Power Supplies

Analog

10.5

Digital

8.5

Total

Power Down(Suspend Mode)

4.7

[AK5370]

Max

16

Units

bits

dBA

dB

Vp-p

20

dB

2.0

dB

KΩ

+20

dB

KΩ

Vdc

500

Ω

3

mA

mA

mA

30

mA

mA

FILTER CHARACTERISTICS

(Ta=25°C VA, VD =3.0 - 3.6 V ; fs = 44.1 kHz)

Parameter

Symbol

A/D Digital Filter

(Decimation LPF)

Passband

+/- 0.2 dB PB

Stopband

SB

Passband Ripple

PR

Stopband Attenuation

SA

Group Delay

GD

A/Ddigital Filter (HPF)

Frequency Response

-3 dB

FR

-0.5 dB

-0.1 dB

Min typ

0

26.5

68

6.85

19.2

44.9

Max

Units

17.64

+/- 0.2

0.5

KHz

KHz

dB

dB

ms

Hz

Hz

Hz

MS0027-E-00

4

2000/05

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