LM1896N-1 National Semiconductor, LM1896N-1 Datasheet - Page 5

• Manufacturer Part Number: LM1896N-1
• Description: IC AMP AUDIO PWR 2.1W STER 14DIP
• Manufacturer: National Semiconductor
• Type: Class ABr

Specifications of LM1896N-1

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 2.1W x 1 @ 8 Ohm; 1.3W x 2 @ 8 Ohm
• Voltage - Supply: 3 V ~ 10 V
• Features: Depop
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM1896N-1; LM1896-1

Typical Applications
6 9 No connection on LM1896
( ) Indicates pin number for LM2896
External Components
10 C
11 C
1 R2 R5 R10 R13
2 R3 R12
3 R
4 C1 C14
5 C2 C13
6 C3 C12
7 C5 C10
8 C7
9 C
Components
c
o
o
S
FIGURE 2 Stereo Amplifier with A
(Continued)
(Figure 2)
Sets voltage gain A
for the other channel
Bootstrap resistor sets drive current for output stage and allows pins 3 and 12 to
go above V
Works with C
Input coupling capacitor Pins 1 and 14 are at a DC potential of V
frequency pole set by
Feedback capacitors Ensure unity gain at DC Also a low frequency pole at
Bootstrap capacitors used to increase drive to output stage A low frequency
pole is set by
Compensation capacitor These stabilize the amplifiers and adjust their
bandwidth See curve of bandwidth vs allowable gain
Improves power supply rejection (See Typical Performance Curves) Increasing
C7 increases turn-on delay
Output coupling capacitor Isolates pins 5 and 10 from the load Low frequency
pole set by
Works with R
Provides power supply filtering
f
f
f
f
L
L
L
L
e
e
e
e
2 R
2 R2C2
2 R3C3
2 C
TL H 7920 – 7
1
1
S
1
1
c
IN
o
o
R
to stabilize output stage
to stabilize output stage
C1
L
V
e
1
5
a
R5 R2 for one channel and A
V
e
Comments
200 BW
e
30 kHz
V
e
1
S
a
2 Low
R10 R13
TL H 7920– 8