AK4223 Datasheet, PDF (7/27 Pages) Asahi Kasei Microsystems – 6:2 Audio Switch and 6:2 Video Switch

[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
Conditions
min
typ
max
Units
S/(N+D) (Note 6)
Input=0dBV
82
90
dB
DR (0dBV reference) (Note 6) Input=-60dBV, A-weighted
88
94
dB
S/N (0dBV reference) (Note 6) A-weighted
88
94
dB
Input Impedance
70
100
kΩ
Input Voltage (Note 7)
2
Vrms
Gain
0dB
-0.4
0
+0.4
dB
-6dB
-6.4
-6.0
-5.6
dB
AGCA step (Note 6)
-
1.0
-
dB
Interchannel Isolation (Note 8)
-
100
dB
LPF Frequency Response
Response at 24kHz
-2
-0.5
-
dB
Input=1Vrms, 0dB at 1kHz
Response at 96kHz
-
-24
-
dB
Interchannel Gain Mismatch
0.2
-
dB
Gain Drift
20
-
ppm/°C
Load Resistance (Note 9)
R1 (Figure 2)
300
Ω
R1+R2 (Figure 2)
5
kΩ
Load Capacitance
C1 (Figure 2)
1.5
nF
C2 (Figure 2)
30
pF
Power Supply Rejection
(Note 10)
-
74
dB
CMRR
f=1kHz, 1Vp-p input
35
45
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).
LOU T/ROUT
C3
10u F
R1
300Ω
C2 1
C22
C1
R2
4.7kΩ
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