AK4205EN

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Description

AK4205EN 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.

Key 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℃
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)

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Block Diagram

Block Diagram

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