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LM4930 Datasheet(PDF) 33 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM4930
Description  Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers
PDF  35 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4930 Datasheet(HTML) 33 Page - National Semiconductor (TI)

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Application Information (Continued)
A single-ended stereo headphone output is also featured,
providing up to 30mW of power per channel into 32
Ω with a
5V analog supply.
A Headphone Sense output is provided on J6 for connection
to an external controller. This pin goes high when a hea-
phone is present (when used as shown in Figure 5) and will
function in all modes independent of other operations the
LM4930 may be currently processing.
The MIC Jack input (J3) provides for a low level analog input.
Pin 3 provides the power to the MIC and the positive input of
the LM4930. Gain for the MIC preamp is set in the GAIN-
CONFIG register.
www.national.com
33



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