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SM5879 Datasheet(PDF) 16 Page - Nippon Precision Circuits Inc

Part # SM5879
Description  3rd-order , 2-channel D/A Converter
PDF  20 Pages
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM5879 Datasheet(HTML) 16 Page - Nippon Precision Circuits Inc

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SM5879AV
NIPPON PRECISION CIRCUITS—16
Deemphasis filter
The built-in deemphasis filter in the SM5879AV
operates at fs = 44.1 kHz.
Soft Mute
With parallel setting (when P/M is HIGH), soft mute
can be activated by the MUTE pin level setting using
the built-in attenuation counter. When muting is acti-
vated, MUTE is HIGH.
When soft mute is activated, the attenuation counter
operates and lowers gain in 128 steps.
The time until mute is activated is approximately
1024/fs
≈ 23.2 msec. The time required to release
muting is the same.
Table 5.
Parallel setting pin name
DEEM
Deemphasis mode
Microcontroller setting
flag
FDEM
HON
L
OFF
Figure 6. Example of soft mute operation
1024/fs
MUTE
0dB
(Gain)
−∞
1024/fs



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