AK7754 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK7754

Audio DSP with Stereo CODEC + MIC/HP-AMP

Asahi Kasei Microdevices 

[AK7754]

■ DAC Characteristics

(Ta=25ºC; AVDD=DVDD=HVDD=3.3V, DVDD18=1.8V; VSS1=VSS2=VSS3=VSS4=0V; BICK1=64fs; Signal

frequency 1kHz; Measurement frequency=20Hz~20kHz, fs=48kHz, PMSRC=PMHPL=PMHPR bits = “0”, CKM mode

6 (CKM[2:0]=6h, Unless otherwise specified.)

Parameter

min

typ

max

Unit

Stereo Resolution

24

Bits

DAC Dynamic Characteristics; Stereo DAC→OUTL/R pins VOLDAL/R=18h(0dB) LODIF=“0”

S/(N+D)

(0dBFS)

80

91

dB

Dynamic Range (A-weight)

88

96

dB

S/N

(A-weight)

88

96

dB

Inter-Channel Isolation (fin=1kHz) (Note 14)

90

110

dB

DC accuracy

Channel Gain Mismatch

0.0

0.5

dB

Analog Volume Characteristics

Gain Amount Min

Max

0.0

dB

28.0

dB

Step width

2.0

dB

Analog Output

Output Voltage

Single-End

2.06

2.17

2.28

Vpp

(Note 15)

Differential

±2.06

±2.17

±2.28

Vpp

Load Resistance

10

kΩ

Load Capacitance

30

pF

Note 14. Inter-channel isolation between Lch and Rch of the DAC.

Note 15. Full scale output voltage. The output voltage is proportional to AVDD. Vout=0.67 x AVDD (typ.)

MS1138-E-01-PB

11

2012/03

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