[AK7770]

MS0699-E-01-PB

2008/06

- 10 -

(Ta=25

°C; AVDD=HVDD=DVDD=3.3V; DVDD18=1.8V; VSS1=VSS2=VSS3=0V; Signal frequency = 1kHz;

Measurement bandwidth =20Hz~20kHz , fs=48kHz fs; SRC reset; unless otherwise specified)

Parameter

min

typ

max

Units

Feedback Resistance

10

30

kΩ

Pre-AMP

S/(N+D)

(Note 6)

99

dB

S/N

(A-weighted)

(Note 6)

105

dB

Load Capacitance

20

pF

Resolution

24

Bits

Pre-AMP

Dynamic characteristics

+

S/(N+D)

fs = 48kHz (-1dBFS)

74

84

dB

ADC1

ADC2

Dynamic range fs = 48kHz (A-weighted)

(Note 7, Note 8)

88

96

dB

S/N

fs = 48kHz (A-weighted)

(Note 7)

85

96

dB

Interchannel Isolation( (f=1kHz)

(Note 9)

85

100

dB

DC Accuracy

ADC1

Gain mis-match between channels

0.1

0.3

dB

ADC2

Analog input

Input voltage

2.05

2.2

2.35

Vp-p

Note 6. Value measured with an input resistance of 47k

Ω and a feedback resistance of 16kΩ with a 2Vrms input voltage.

Note 7. The value measured through the pre-amp and ADC with an input resistance of 47k

Ω and a feedback resistance of

16k

Ω with a 2Vrms input voltage.

Note 8. S/(N+D) with an input signal of -60dBFS

Note 9. Isolation between AINL1-4, AINR1-4 with a -1dBFS input signal.

Note 10. When the SRC on DIT operate asynchronously, the performance may be degraded.

(Ta= 25

°C; AVDD=HVDD=DVDD=3.3V; DVDD18=1.8V; VSS1=VSS2=VSS3=0V;

Signal frequency = 1kHz; Measurement bandwidth =20Hz~20kHz, fs=48kHz fs; SRC reset; unless otherwise

specified)

Parameter

min

typ

max

Units

Resolution

24

Bits

Dynamic characteristics

S/(N+D)

(0 dBFS)

78

88

dB

Dynamic range (A-weighted)

(Note 11)

92

100

dB

S/N (A-weighted)

92

100

dB

Interchannel Isolation (f=1kHz) (Note 12)

90

100

dB

DC Accuracy

Gain mis-match between channels

0.2

0.5

dB

Analog output

Output voltage

(Note 13)

2.02

2.18

2.34

Vp-p

Load resistance

5

kΩ

DAC1

DAC2

Load capacitance

30

pF

Note 11. S/(N+D) with a -60dBFS input signal

Note 12. Isolation between Lch-Rch between each DAC

Note 13. Full scale output voltage

ANALOG CHARACTERISTICS