AK7734 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK7734

Audio DSP with 2-Channel ADC/SRC

Asahi Kasei Microdevices 

[AK7734]

ELECTRIC CHARACTERISTICS

(1) Analog Characteristics

1) ADC

1-1) fs=8kHz

(Ta=25ºC; AVDD=DVDD=3.3V, BITCLK=64fs; Signal frequency 1kHz; Measurement frequency = 20Hz~3.4kHz

@fs=8kHz; CKM mode0(CKM[3:0]=LLLL) Unless otherwise specified.)

Parameter

min

typ

max

Units

ADC

Resolution

24

Bits

Section Dynamic Characteristics

S/(N+D) (-1dBFS)

76

84

dB

Dynamic Range

(Note 5)

84

92

dB

S/N

84

92

dB

Inter-Channel Isolation (fin=1kHz) (Note 6)

90

110

dB

DC accuracy

Channel Gain Mismatch

0.1

0.3

dB

Analog Input

Input Voltage

(Note 7)

1.85

2.00

2.15

Vp-p

Input Impedance

38

58

kΩ

Note 5. - S/(N+D) when -60dB FS signal is applied.

Note 6. Inter-channel isolation between AINR and AINL at –1dB FS signal input.

Note 7. Full scale output voltage is FS=AVDD×2.0/3.3.

1-2) fs=48kHz

(Ta=25ºC; AVDD=DVDD=3.3V, BITCLK=64fs; Signal frequency 1kHz; Measurement frequency =20Hz~20kHz

@fs=48kHz; CKM mode0(CKM[3:0]=LLLL) Unless otherwise specified.)

Parameter

min

typ

max

Units

ADC

Resolution

24

Bits

Section Dynamic Characteristics

S/(N+D) (-1dBFS)

75

83

dB

Dynamic Range (Filter A)

(Note 8)

87

96

dB

S/N (Filter A)

87

96

dB

Inter-Channel Isolation (fin=1kHz) (Note 9)

90

110

dB

DC accuracy

Channel Gain Mismatch

0.1

0.3

dB

Analog Input

Input Voltage

(Note 10)

1.85

2.00

2.15

Vp-p

Input Impedance

23

35

kΩ

Note 8. - S/(N+D) when -60dBFS signal is applied.

Note 9. Inter-channel isolation between AINR and AINL at –1dB FS signal input.

Note 10. Full scale output voltage is FS=AVDD×2.0/3.3.

MS1033-E-02-PB

10

2010/01

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