AK4618 Datasheet, PDF (7/60 Pages) Asahi Kasei Microsystems – 192kHz 24-bit 6ch/12ch Audio CODEC with Microphone Interface

[AK4618]
ANALOG CHARACTERISTICS
(Ta=25ºC; AVDD1, AVDD2=TVDD=3.3V, VSS1 ~ 3 =0V, BICK=64fs; Signal frequency 1kHz; Measurement
frequency = 20Hz~20kHz @fs=48kHz, 20Hz~40kHz at fs=96kHz, 20Hz~40kHz at fs=192kHz; Unless otherwise
specified.)
Parameter
Min.
Typ.
MIC AMP
Input Resistance
40
Gain
MGAIN[2:0]bits=0h
0
MGAIN[2:0]bits=1h
15
MGAIN[2:0]bits=2h
18
MGAIN[2:0]bits=3h
21
MGAIN[2:0]bits=4h
24
MGAIN[2:0]bits=5h
27
MGAIN[2:0]bits=6h
30
MGAIN[2:0]bits=7h
33
MIC BIAS
Bias Output Voltage
Load Resistance
Load current = 0mA
Load current = 6mA
2.40
2.40
0.4
Load Capacitance
ADC Analog Input Characteristics(Differential inputs)
Resolution
S/(N+D)
(-1dBFS) MGAIN[2:0]bits=0h(0dB)
77
87
MGAIN[2:0]bits=3h(+21dB)
80
DR (-60dBFS with A-weighted) MGAIN[2:0]bits=0h(0dB)
88
98
MGAIN[2:0]bits=3h(+21dB)
85
S/N
(A-weighted) MGAIN[2:0]bits=0h(0dB)
88
98
MGAIN[2:0]bits=3h(+21dB)
85
Interchannel Isolation
110
Interchannel Gain Mismatch
0
Gain Drift
20
Input Voltage
Single-ended (AIN=0.81x AVDD1)
Differential (AIN=±0.81x AVDD1)
Power Supply Rejection Ratio
(Note 5)
2.67
±2.67
60
DAC Analog Output Characteristics
Resolution
S/(N+D)
(0dBFS) fs=48kHz BW=20kHz
82
92
fs=96kHz BW=40kHz
fs=192kHz BW=40kHz
DR
(-60dBFS with A-weighted)
S/N
(A-weighted)
90
90
100
106
100
106
Interchannel Isolation
100
Interchannel Gain Mismatch (Note 6)
0
Gain Drift
20
Output Voltage
Load Resistance
AOUT=0.86x AVDD2
(AC Load)
2.54
2.83
5
Load Capacitance
Power Supply Rejection (Note 5)
60
Note 5. PSRR is applied to AVDD1, AVDD2 and TVDD with 1kHz, 50mVpp.
Note 6. Channel gain mismatch between all output channels (LOUT1-6, ROUT1-6).
Max.
30
24
0.5
24
0.7
3.12
30
Unit
k
dB
dB
dB
dB
dB
dB
dB
dB
V
V
k
pF
Bits
dB
dB
dB
dB
dB
dB
dB
dB
ppm/C
Vpp
Vpp
dB
Bits
dB
dB
dB
dB
dB
dB
dB
ppm/C
Vpp
k
pF
dB
015000617-E-00
-7-
2015/01