AK4201 参数 Datasheet PDF下载

CONFIDENTIAL

[AK4201]

= Preliminary =

AK4201

Stereo Cap-less HP-Amp

GENERAL DESCRIPTION

The AK4201 is an audio stereo cap-less headphone amplifier. The AK4201 eliminates the need for large

DC-blocking capacitors with a built-in Charge-pump circuit. The PSRR (Power supply Rejection Ratio)

can achieve to 100dB with a built-in regulator, and it can output 2Vrms with excellent linearity when used

as lineout amplifier. The AK4201 is available in tiny 12-pin USON (2.2 X 2.9mm), saving board space,

cost, and component height.

FEATURE

Stereo Cap-less Amplifier (No DC-blocking capacitors required)

High PSRR (100dB at 217Hz)

Output Power:

65 mW x 2ch @ 16Ω, AVDD=PVDD=5.0V, THD+N=-40dB

30 mW x 2ch @ 16Ω, AVDD=PVDD=3.3V, THD+N=-40dB

Output Noise Level: 11µVrms (Ri=20kΩ, Rf=30kΩ)

Line-Out level:

2.0Vrms @ 5kΩ, AVDD=PVDD=5.0V

2.0Vrms @ 5kΩ, AVDD=PVDD=3.3V

Regulator built-in

THD+N:

-60 dB @ 16Ω, 50mW, AVDD=PVDD=5.0V

-60 dB @ 16Ω, 20mW, AVDD=PVDD=3.3V

-90 dB @ 5kΩ, 2Vrms, AVDD=PVDD=5.0V

-90 dB @ 5kΩ, 2Vrms, AVDD=PVDD=3.3V

Low Power Shutdown Mode

0.1µA (typ)

Adjustable Gain Range:

-16 dB ~ 16dB

Pop noise free at power-ON/OFF

Power Supply: 2.6V ~ 3.6V or 4.5V ~ 5.5V

Ta:

−40 ∼

85°C

Package: 12pin USON (2.2 x 2.9mm, 0.5mm pitch)

Rev 0.2

-1-

2008/07