AK4205EN Datasheet, PDF (10/25 Pages) Asahi Kasei Microsystems – Ultra Low Noise and Distortion Headphone Amp with Analog Switch

[AK4205]
Parameter
Min.
Typ.
Max.
Unit
Analog Switch Block: SWINA, SWINB pins (Single-ended Input) or AUXA, AUXB pins (Single-ended
Input) → SWOUTA, SWOUTB pins (Figure 5)
Analog Signal Range
SWINA, SWINB pins
AUXA, AUXB pins
-
-
ON-Resistance
Hi-Fi Mode (SEL pin = “H”)
AUX Mode (SEL pin = “L”)
-
-
THD
Hi-Fi Mode
RL = 32 Ω @ 33 mW
-
(SEL pin = “H”)
RL = 600 Ω @ 6.7 mW
-
AUX Mode
RL = 32 Ω @ 33 mW
-
(SEL pin = “L”)
RL = 600 Ω @ 6.7 mW
-
Inter-channel Isolation
RL = 32 Ω
RL = 600 Ω
-
-
Off Isolation
AUX → Hi-Fi
100
(Note 31, Figure 6)
Hi-Fi → AUX
100
6.0
6.0
0.26
0.30
-124
-135
-114
-135
130
120
124
118
-
Vpp
-
Vpp
-
Ω
-
Ω
-
dB
-
dB
-
dB
-
dB
-
dB
-
dB
-
dB
-
dB
PSRR (Note 32)
f = 217 Hz
f = 1 kHz
-
115
-
dB
-
115
-
dB
Note 31. The input signal to SWINA, SWINB, AUXA and AUXB pins is less than 2 Vpp (DC bias is 0 V,
RL = 32 Ω.) The specification is shown in figure6.
Note 32. PSRR is applied to SWVDD with 500mVpp sine wave.
DC 0V
SWINA pin
(SWINB pin)
SWOUTA pin
(SWOUTB pin)
SWINA pin
(SWINB pin)
Open
SWOUTA pin
(SWOUTB pin)
RL
RL
Open
DC 0V
AUXA pin
(AUXB pin)
SEL pin = “H”
AUXA pin
(AUXB pin)
SEL pin = “L”
Hi-Fi mode (SEL pin = “H”)
AUX mode (SEL pin = “L”)
Figure 5. Measurement Circuit for Analog Switch
SWINA pin
(SWINB pin)
Open
SWOUTA pin
(SWOUTB pin)
≤ 2.0Vpp SWINA pin
(SWINB pin)
DC 0V
SWOUTA pin
(SWOUTB pin)
DC 0V
AUXA pin
≤ 2.0Vpp _{(AUXB pin)}
SEL pin = “H”
RL=32Ω
Open
AUXA pin
(AUXB pin)
SEL pin = “L”
RL=32Ω
AUX → Hi-Fi (SEL pin = “H”)
Hi-Fi → AUX (SEL pin = “L”)
Figure 6. Measurement Circuit for Off Isolation
Parameter
Power Supply Current:
Power Up (All Circuit Power Up)
PVDDA+PVDDB (Quiescent, Iout = 0A)
PVEEA+PVEEB (Quiescent, Iout = 0A)
RVDD
SWVDD
RSTN pin = “H”
RSTN pin = “L”
Min.
-
-
-
-
-
Typ.
Max.
Unit
5.4
11.5
mA
6.5
13.0
mA
2.0
3.0
mA
0.6
0.9
mA
200
300
μA
016012367-E-00
- 10 -
2016/12