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LM4982 Datasheet(PDF) 13 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4982
Description  Ground-Referenced, Ultra Low Noise, 80mW Stereo Headphone Amplifier with IntelliSense and I2C Volume
PDF  21 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4982 Datasheet(HTML) 13 Page - National Semiconductor (TI)

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Application Information
TABLE 1. Chip Address
D7
D6
D5
D4
D3
D2
D1
D0
Chip Address
1110110
0
TABLE 2. Control Registers
D7
D6
D5
D4
D3
D2
D1
D0
Mode Control
0000
CD3
CD2
CD1
CD0
Volume Control
1
0
0
VD4
VD3
VD2
VD1
VD0
TABLE 3. Mode Control
CD3
1
Intellisense Enabled
0
Intellisense Disabled
CD2
1
Mute Enabled
0
Mute Disabled
CD1
1
Stereo
0
Mono *
CD0
1
Normal Operation
0
Shutdown Enabled
* Mono mode mixes (Left + Right) / 2, into Left output
I
2C VOLUME CONTROL
The LM4982 can be configured in 32 different gain steps by forcing I2C volume control bits to a desired gain according to the table
below:
20161468
FIGURE 2. I
2C Bus Format
20161467
FIGURE 3. I
2C Timing Diagram
www.national.com
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