AK7722 Datasheet, PDF (12/28 Pages) Asahi Kasei Microsystems – 24bit 4ch ADC + 24bit 4ch DAC with Audio DSP

[AK7722]
■ DAC1/2 Characteristics
(Ta=25ºC; AVDD=DVDD=3.3V; VSS1~VSS6=0V; Signal frequency 1kHz; Measurement frequency =20Hz~20kHz
@fs=48kHz; CKM[2:0]=000, BITFS[1:0]=00, in SRC Reset) Unless otherwise specified.)
Parameter
min
typ
max
Unit
DAC1 Resolution
24
Bits
DAC2
Dynamic Characteristics
S/(N+D) (0 dBFS)
82
90
dB
Dynamic Range (A-weighted) (Note 12)
98
108
dB
S/N (A-weighted)
98
108
dB
Inter-channel Isolation (f=1kHz) (Note 13)
90
110
dB
DC accuracy
Channel Gain Mismatch
0.0
0.5
dB
Analog output
Output Voltage
(Note 14)
3.78
4.16
4.53
Vp-p
Load Resistance
5
kΩ
Load Capacitance
30
pF
Note 12. S/(N+D) when -60dBFS signal is applied.
Note 13. Indicates isolation between each DAC’s of Lch and Rch when -1dBFS signal is applied.
Note 14. Full scale differential output voltage.
SRC CHARACTERISTICS
(Ta=25ºC; AVDD = DVDD=3.3V; VSS1~VSS6=0V, data = 24bit; measurement bandwidth = 20Hz~ FSO/2; unless
otherwise specified.)
Parameter
Symbol min typ max Unit
Resolution
24 Bits
Input Sample Rate
FSI
7.35
96 kHz
Output Sample Rate
FSO
7.35
48 kHz
THD+N
(Input= 1kHz, 0dBFS)
FSO/FSI=44.1kHz/48kHz
-112
dB
FSO/FSI=44.1kHz/96kHz
-104
dB
FSO/FSI=48kHz/44.1kHz
-112
dB
FSO/FSI=48kHz/96kHz
-112
dB
FSO/FSI=48kHz/8kHz
-111 -103 dB
FSO/FSI=8kHz/48kHz
-113
dB
FSO/FSI=8kHz/44.1kHz
-100
dB
Dynamic Range (Input= 1kHz, -60dBFS)
FSO/FSI=44.1kHz/48kHz
113
dB
FSO/FSI=44.1kHz/96kHz
113
dB
FSO/FSI=48kHz/44.1kHz
113
dB
FSO/FSI=48kHz/96kHz
113
dB
FSO/FSI=48kHz/8kHz
109 112
dB
FSO/FSI=8kHz/48kHz
113
dB
FSO/FSI=8kHz/44.1kHz
113
dB
Dynamic Range (Input= 1kHz, -60dBFS, A-weighted
FSO/FSI=44.1kHz/48kHz
115
dB
Ratio between Input and Output Sample Rate
FSO/FSI 0.167
6
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MS1328-E-00-PB
12
2011/09