[AK4223]
ANALOG CHARACTERISTICS (Audio)
(Ta=25°C; AVDD= RVDD= VVDD= 9.0V; VSS1=VSS2= 0V; Signal Frequency=1kHz, Measurement Frequency=
20Hz∼20kHz, unless otherwise specified)
Parameter
S/(N+D) (Note 6)
Conditions
Input=0dBV
min
82
typ
90
max
Units
dB
DR (0dBV reference) (Note 6) Input=-60dBV, A-weighted
S/N (0dBV reference) (Note 6) A-weighted
Input Impedance
88
88
70
94
94
100
dB
dB
kΩ
Vrms
dB
Input Voltage (Note 7)
2
+0.4
-5.6
-
Gain
0dB
-0.4
-6.4
-
0
-6.0
1.0
-6dB
dB
dB
AGCA step
(Note 6)
Interchannel Isolation (Note 8)
LPF Frequency Response
Input=1Vrms, 0dB at 1kHz
-
-2
100
-0.5
dB
dB
Response at 24kHz
Response at 96kHz
-
-
-24
0.2
20
-
-
-
dB
dB
ppm/°C
Ω
Interchannel Gain Mismatch
Gain Drift
Load Resistance (Note 9)
R1
(Figure 2)
300
5
R1+R2 (Figure 2)
kΩ
Load Capacitance
C1
C2
(Figure 2)
(Figure 2)
1.5
30
nF
pF
Power Supply Rejection
CMRR
(Note 10)
f=1kHz, 1Vp-p input
-
35
74
45
dB
dB
Note 6. This is a value when AGCA=0dB.
Note 7. The Input Voltage meets S/(N+D)>82dB.
Note 8. Between all channels of LIN1-6 and RIN1-6.
Note 9. The output resistance of audio output (LOUT1-2 and ROUT1-2) are less than l0Ω (typ).
Note 10. Applied to AVDD, RVDD and VVDD with a sine wave (1kHz, 50mVpp).
R1
C3
300Ω
10uF
LOUT/ROUT
R2
4.7kΩ
C21
C22
C1
C2=C21+C22= 30pF(max)
C1= 1.5nF(max)
Figure 2. Load Resistance R1, R2 and Load Capacitance C1, C2
MS1251-E-00
7
2010/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
