LM1896 LM2896 Dual Audio Power Amplifier
February 1995
LM1896 LM2896 Dual Audio Power Amplifier
General Description
The LM1896 is a high performance 6V stereo power amplifi-
er designed to deliver 1 watt channel into 4X or 2 watts
bridged monaural into 8X Utilizing a unique patented com-
pensation scheme the LM1896 is ideal for sensitive AM
radio applications This new circuit technique exhibits lower
wideband noise lower distortion and less AM radiation than
conventional designs The amplifier鈥檚 wide supply range
(3V 鈥?V) is ideal for battery operation For higher supplies
(V
S
l
9V) the LM2896 is available in an 11-lead single-in-
line package The LM2896 package has been redesigned
resulting in the slightly degraded thermal characteristics
shown in the figure Device Dissipation vs Ambient Tempera-
ture
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Low AM radiation
Low noise
3V 4X stereo P
o
e
250 mW
Wide supply operation 3V 鈥?15V (LM2896)
Low distortion
No turn on 鈥樷€榩op鈥欌€?/div>
Adjustable voltage gain and bandwidth
Smooth waveform clipping
P
o
e
9W bridged LM2896
Applications
Y
Y
Y
Compact AM-FM radios
Stereo tape recorders and players
High power portable stereos
Typical Applications
TL H 7920 鈥?1
FIGURE 1 LM2896 in Bridge Configuration (A
V
e
400 BW
e
20 kHz)
Order Number LM1896N
Order Number LM2896P
See NS Package Number N14A
See NS Package Number P11A
C
1995 National Semiconductor Corporation
TL H 7920
RRD-B30M115 Printed in U S A
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