NJU8721 Просмотр технического описания (PDF) - Japan Radio Corporation

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NJU8721

CLASS D HEADPHONE AMPLIFIER FOR DIGITAL AUDIO

Japan Radio Corporation  

NJU8721

! TIMING CHARACTERISTICS

• Master Clock Input

MCK

tMCKH

tMCKL

PARAMETER

MCK Frequency

MCK Pulse Width (H)

MCK Pulse Width (L)

SYMBOL

fMCKI

tMCKH

tMCKL

(Ta=25°C, VDD=VDDL=VDDR=3.3V, unless otherwise noted)

CONDITIONS

MIN.

TYP.

MAX.

UNIT

256fS

7.28

-

27.648

MHz

12

-

-

ns

12

-

-

ns

Note 7) tMCKI shows the cycle of the MCK signal.

• Reset Input

tRST

RST

PARAMETER

Reset Low Level Width

SYMBOL

tRST

(Ta=25°C, VDD=VDDL=VDDR=3.3V, unless otherwise noted)

CONDITIONS

MIN.

TYP.

MAX.

UNIT

3

-

-

ms

• Digital Audio Signal Interface

BCK

LRCK

tBLR

tLRB

tDS

DIN

tBCLK

tBCKL

tBCKH

tDH

PARAMETER

Audio DAC Sampling Rate

DIN Setup Time

DIN Hold Time

BCK Period

BCK Pulse Width (H)

BCK Pulse Width (L)

LRCK Hold Time

LRCK Setup Time

SYMBOL

fS

tDS

tDH

tBCLK

tBCKH

tBCKL

tBLR

tLRB

(Ta=25°C, VDD=VDDL=VDDR=3.3V, unless otherwise noted)

CONDITIONS

MIN.

TYP.

MAX.

UNIT

28

-

100

KHz

20

-

-

ns

20

-

-

ns

1/(128fS)

-

20

-

-

ns

-

ns

20

-

-

ns

20

-

-

ns

20

-

-

ns

- 11 -

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