[AK7752]

ELECTRIC CHARACTERISTICS

(1) Analog Characteristics

1) fs=8kHz

(Ta = 25

°C; AVDD, DVDD = 3.3V; VREFH = AVDD, VREFL = AVSS;

BITCLK = 64fs; Signal frequency 1kHz; Measurement frequency = 20Hz to 3.4 kHz; fs = 8kHz;

CKM Mode 0 (CKM[3:0]=LLLL) Unless otherwise specified.)

Parameter

min

typ

max

Units

Resolution

24

Bits

Dynamic Characteristics

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

76

86

dB

ADC

Section

Dynamic Range

(Note 7)

81

89

dB

S/N

81

89

dB

Inter-Channel Isolation (f=1kHz) (Note 8.)

90

105

dB

DC accuracy

Channel Gain Mismatch

0.2

0.5

dB

Analog Input

Input Voltage

(Note 9)

1.78

1.98

2.18

Vp-p

Input Impedance

40

60

kΩ

Resolution

18

Bits

Dynamic Characteristics

DAC

S/(N+D) (0dB)

80

90

dB

Section

Dynamic Range

(Note 7)

87

95

dB

S/N

87

95

dB

Inter-Channel Isolation (f=1kHz) (Note 10)

85

100

dB

DC accuracy

Channel Gain Mismatch

0.2

0.5

dB

Analog Output

Output Voltage

(Note 11)

1.85

2.00

2.15

Vp-p

Load Resistance

10

kΩ

Load Capacitance

50

pF

Note 7. S/(N+D) when -60dB signal is applied.

Note 8. Inter-channel isolation between ALINE_IN and ANE_IN at –1dB FS signal input.

Note 9. The full scale for analog input voltage is FS = (VREFH-VREFL)

∗ 0.6.

Note 10. Between ANE_OUT and ALINE_OUT.

Note 11. Full scale output voltage when VREFH = AVDD, VREFL = AVSS.

MS0578-E-01

-PB

2007/0

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