SM5847AF datasheet(16/30 Pages) NPC

부품명	SM5847AF

상세설명	High-fidelity Digital Audio, Multi-function Digital Filter

PDF	30 Pages

Scroll/Zoom	100%

제조업체	NPC [Nippon Precision Circuits Inc]

홈페이지	http://www.npc.co.jp/en

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16 / 30 page

SM5847AF

NIPPON PRECISION CIRCUITS—16

Analog Output Click Noise

Under the following conditions, a click noise may be

output from the DAC (digital-to-analog converter)

connected to the SM5847AF.

When a system reset on RSTN occurs

When the internal system clock mode, set by

CKSLN, CKDV1, and CKDV2, is switched

When the deemphasis mode, set by DEMPL,

DEMPR, FSEL1, and FSEL2, is switched

When the audio data input mode, set by INF1N,

DI/INF2N,

IW1N/DIL,

and

IW2N/DIR,

switched

When the SYNCN jitter-free mode switch timing

exceeds the internal timing delay limit

An external muting circuit connected to the analog

output may be required to eliminate this noise.

Figure 2. Soft muting/reset operation

512/fs

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Normal operation

reset

soft mute

DI/INF2N,

IW1N/DIL, IW2N/DIR

RSTN

MUTEL/MUTER

Gain

External DAC

analog output

(full scale signal)

+FS

zero

-FS

click noise

0dB

FS: full scale

−∞

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