AK4205EN Datasheet, PDF (1/25 Pages) Asahi Kasei Microsystems – Ultra Low Noise and Distortion Headphone Amp with Analog Switch

[AK4205]
AK4205
Ultra Low Noise and Distortion Headphone Amp with Analog Switch
1. General Description
The AK4205 is a stereo headphone amplifier corresponding to high resolution with built-in analog switch
for Hi-Fi mobile. The AK4205 achieves industry’s leading level ultra-low noise and ultra-low distortion
characteristics (THD+N = -118dB).
The AK4205 is available in a small 36-pin QFN package. It can save the mounting area of the board by
including resistors for gain adjustment and low-pass filter.
Application:
 Smartphone
 Portable AMP
 Digital Media Player
 USB DAC
2. Features
1. Headphone Amplifier
 Full-differential Input
 Built-in Resistors for Gain Adjustment: Fixed to +0.5 dB @1 kHz
 2nd order Low-pass Filter
 Ultra-Low Noise: S/N 124dB
 Ultra-Low Distortion: THD+N -118 dB @32 Ω, 34 mW
THD+N -120 dB @600 Ω, 6.7 mW
2. Analog Switch
 Selector Switch for Hi-Fi Audio path and Auxiliary path
 Ultra-Low Distortion: THD -124dB@32 Ω, 34 mW
 2 Vrms Output
 Pop & Click Noise Free Switching Control
 Built-in Negative Voltage Generator
 Mute Function
3. Ta = 40  85C
4. Power Supply:
 Positive Power Supply (PVDDA, PVDDB): 6.0 V (typ)
 Negative Power Supply (PVEEA, PVEEB): -5.0 V (typ)
 Reference Power Supply (RVDD): 6.0 V (typ)
 Analog Switch Power Supply (SWVDD): 3.3 V (typ)
5. Package:
 36-pin QFN (5 x 5 mm, 0.4 mm pitch)
016012367-E-00
-1-
2016/12