[AK4685]
ANALOG CHARACTERISTICS
(Ta=25°C; TVDD = 3.3V; DVDD1-3=AVDD1-3= 5.0V; PVDD = 3.3V; VSS1-7 = 0V; fs=48kHz; BICK=64fs; Signal
Frequency=1kHz; 24bit Data; Measurement Frequency = 20Hz∼ 20kHz at fs=48kHz, 20Hz~40kHz at fs=96kHz;
20Hz~40kHz at fs=192kHz, all blocks are synchronized, unless otherwise specified)
Parameter
min
typ
max
Units
ADC Characteristics
Feedback Resistance
Resolution
10
50
24
kΩ
Bits
dB
dB
dB
dB
dB
ppm/°C
Vpp
dB
S/(N+D) (-1dBFS. Note 9)
fs=48kHz
82
93
93
90
95
DR
S/N
(-60dBFS. Note 9)
(input off)
fs=48kHz, A-weighted
fs=48kHz, A-weighted
(Note 10)
102
102
100
Interchannel Isolation
Interchannel Gain Mismatch
Gain Drift
Input Range
Power Supply Rejection
0.6
-
50
±3.3
60
(Pre-Amp output) = ±3.3 x AVDD1/5
±2.97
±3.63
(Note 12)
DAC to Analog Output Characteristics (Differential Mode)
Resolution
24
Bits
S/(N+D)
(0dBFS)
fs=48kHz
fs=96kHz
fs=192kHz
fs=48kHz, A-weighted
fs=96kHz
fs=96kHz, A-weighted
fs=192kHz
fs=192kHz, A-weighted
fs=48kHz, A-weighted
fs=96kHz
fs=96kHz, A-weighted
fs=192kHz
fs=192kHz, A-weighted
82
-
-
98
-
-
-
-
98
-
-
95
95
95
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
DR
(-60dBFS)
107
102
107
102
107
108
102
107
102
107
100
S/N
(“0” data)
-
-
90
Interchannel Isolation
Interchannel Gain Mismatch
Gain Drift
Output Voltage
Load Resistance
Load Capacitance
0.5
-
dB
ppm/°C
Vpp
50
(AOUT+ -AOUT-)= ±2.56 x AVDD2/5
±2.30
5
±2.56
±2.82
(AC Load, Note 11)
kΩ
pF
30
Power Supply Rejection
(Note 12)
50
dB
DAC to Analog Output Characteristics (Single End Mode)
Resolution
24
Bits
S/(N+D)
(0dBFS)
fs=48kHz
fs=96kHz
fs=192kHz
fs=48kHz, A-weighted
fs=96kHz
fs=96kHz, A-weighted
fs=192kHz
fs=192kHz, A-weighted
fs=48kHz, A-weighted
fs=96kHz
fs=96kHz, A-weighted
fs=192kHz
fs=192kHz, A-weighted
80
-
-
98
-
-
-
-
98
-
-
90
90
90
105
99
105
99
105
106
99
105
99
105
100
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
DR
(-60dBFS)
S/N
(“0” data)
-
-
90
Interchannel Isolation
Interchannel Gain Mismatch
0.5
dB
MS1106-E-00
2009/08
- 9 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
