AK4220 Datasheet, PDF (8/33 Pages) Asahi Kasei Microsystems – 7:3 Audio Switch and 6:3 Video Switch

I
[AK4220]
ANALOG CHARACTERISTICS (AUDIO)
(Ta=25°C; AVDD = VVDD1-2 = 5V, DVDD =3.3V; AVSS = VVSS1-3 = DVSS = 0V; Signal Frequency=1kHz,
Measurement Frequency=20Hz∼20kHz, unless otherwise specified)
Parameter
min
typ
max
Units
S/(N+D)
Input=0dBV
82
92
dB
DR (0dBV)
Input=-60dBV, A-weighted
88
96
dB
S/N (0dBV)
Input=0ff, A-weighted
88
96
dB
Input Impedance
(Note: 5)
20
kΩ
Maximum Input Voltage
(Note: 6)
1
-
-
Vrms
Gain
-0.5
0
0.5
dB
Interchannel Isolation
(Note: 7)
-
100
dB
Interchannel Gain Mismatch
0.2
-
dB
Gain Drift
20
-
ppm/°C
Load Resistance (Note: 8) R1+R2 (Figure 4)
5
kΩ
Load Capacitance
C1 (Figure 4)
C2 (Figure 4)
400
pF
30
pF
Power Supply Rejection
(Note: 9)
-
50
dB
Input Detection Circuit
Input Reception
1kHz (Note: 10)
-43
-31
-26
dBV
Input Reception Adjustment Gain Step (Note: 11)
-
3
-
dB
Note: 5. Connected GND1-7 to GND using a capacitor for AC-coupling.
Note: 6. The Input Voltage meets S/(N+D)>82dB
Note: 7. Between all channels of LIN1-7 and RIN1-7.
Note: 8. The output resistance of audio output (LOUT1-3 and ROUT1-3) are less than l0Ω(typ).
Note: 9. Applied to AVDD, VVDD1-2 and DVDD with a sine wave (1kHz, 50mVpp).
Note: 10. Detect an instant value. 31dBV=+40mV0p. If the input voltage is smaller than the detection reception value, the
signal isn’t detected, and if the input voltage is larger than the detection reception value, the signal is detected.
The input reception value is proportional to AVDD voltage as of 0.008 x AVDD V0p(typ).
Note: 11. Input Reception Adjustment Gain is +6dB∼-6dB.
LOUT1-3
ROUT1-3
C3
10uF
C21
C22
R1
300Ω
R2
4.7kΩ
C1
C2=C21+C22= 30pF(max)
C1= 400pF(max)
Figure 4. Load Resistance R1, R2 and Load Capacitance C1, C2.
MS0627-E-00
-8-
2007/05