AK4205EN Datasheet, PDF (9/25 Pages) Asahi Kasei Microsystems – Ultra Low Noise and Distortion Headphone Amp with Analog Switch

[AK4205]
Parameter
Min.
Typ.
Max.
Unit
HP-amp Block: PINA-NINA, PINB-NINB pins (Full Differential Input) → AMPOUA, AMPOUB pins,
Rd = 33Ω (Figure 4)
Amp Gain
Gain Setting
0.18
0.48
0.78
dB
RL = 32 Ω (Note 24)
-
-114
-
dB
THD+N
RL = 32 Ω (Note 25)
-
-118
RL = 600 Ω(Note 24)
-
-117
-
dB
-
dB
RL = 600 Ω(Note 25)
-
-120
-
dB
Output Noise Level (A-weighted) (Note 26, Note 27)
-
-116
-
dBV
Output Noise Level (A-weighted) (Note 25, Note 27)
-
-117
-
dBV
PSRR (Note 28)
f = 217 Hz
f = 1 kHz
-
120
-
115
-
dB
-
dB
Note 24. Measured by Audio Precision APx 555. a
Note 25. A value of IC itself, the AK4205. It does not include the noise of measuring instrument.
Note 26. Measured by Audio Precision SYS 2722.
Note 27. Input signal is DC2.5 V
Note 28. When sine wave of 500 mVpp is superimposed on PVDDA, PVDDB, PVEEA, PVEEB.
Note 29. For analog characteristics of the headphone amplifier that is not listed in the above column,
refer to the analog characteristics of the headphone amplifier + Analog Switch part.
Note 30. When only using the headphone amplifier, the power supply voltage described in the
recommended operating conditions should also be input to SWVDD
DC 2.5V
DC 2.5V
NINA pin
(NINB pin)
PINA pin
(PINB pin)
Rd
AMPOUTA pin
(AMPOUTB pin)
RL
AVSSA pin
(AVSSB pin)
Figure 4. Measurement Circuit for Headphone-amp
016012367-E-00
-9-
2016/12