AK4205EN Datasheet, PDF (8/25 Pages) Asahi Kasei Microsystems – Ultra Low Noise and Distortion Headphone Amp with Analog Switch

[AK4205]
8. Electrical Characteristics
■ Analog Characteristics
(Ta = 25 C; PVDDA = PVDDB = RVDD = 6.0 V, PVEEA = PVEEB = -5.0 V, SWVDD = 3.3 V; AVSSA =
AVSSB = RVSS = SWVSS = 0 V; Signal Frequency, Level =1 kHz, 2 Vrms; Measurement Bandwidth =
20 Hz  20 kHz; unless otherwise specified)
Parameter
Min.
Typ.
Max.
Unit
HP-amp + Analog Switch:
PINA-NINA, PINB-NINB pins (Full Differential Input) → AMPOUA, AMPOUB pins → SWINA, SWINB
pins → SWOUTA, SWOUTB pins, Rd=33Ω, SEL pin = “H” (Figure 3)
Input Resistance
PINA, PINB pins
NINA, NINB pins
1120
1400
1680

560
700
840

Input Voltage (Note 19)
PINA, PINB, NINA,
NINB pins
-
2.83
-
Vpp
Output Power
SWOUTA, SWOUTB pins
RL = 16 Ω
-
30
-
mW
RL = 32 Ω
32
34
36
mW
RL = 600 Ω
6.3
6.7
7.0
mW
Cut-off Frequency (Note 20)
-
400
-
kHz
RL = 32 Ω (Note 21)
-
-114
-
dB
THD+N
RL = 32 Ω (Note 22)
-
-118
-
dB
RL = 600 Ω (Note 21)
-
-117
-
dB
RL = 600 Ω (Note 22)
-
-120
-
dB
S/N (A-weighted) (Note 23)
115
123
-
dB
S/N (A-weighted) (Note 22)
115
124
-
dB
Interchannel Isolation
RL = 32 Ω
100
120
-
dB
Interchannel Gain Mismatch
-
0
0.4
dB
Note 19. Input signal is DC2.5 V.
Note 20. When the output level of 1 kHz is 0 dB, it is the frequency at which the output level becomes
-3.0 dB.
Note 21. Measured by Audio Precision APx555.
Note 22. A value of IC itself, the AK4205. It does not include the noise of measuring instrument.
Note 23. Measured by Audio Precision SYS 2722.
DC 2.5V
DC 2.5V
NINA pin
(NINB pin)
PINA pin
(PINB pin)
SWINA pin
Rd ^{(SWINB pin) SEL pin = “H” SWOUTA pin}
(SWOUTB pin)
AMPOUTA pin
(AMPOUTB pin)
RL
AVSSA pin
(AVSSB pin)
Figure 3. Measurement Circuit for HP-amp + Analog Switch
016012367-E-00
-8-
2016/12