If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 4)
ESD Susceptibility (Note 5)
ESD Susceptibility (Note 6)
Junction Temperature
Soldering Information (Note 1)
Small Outline Package
Vapor Phase (60 seconds)
Infrared (15 seconds)
6.0V
−65˚C to +150˚C
−0.3V to V
DD
+ 0.3V
Internally limited
3500V
250V
150˚C
Thermal Resistance
θ
JC
(MSOP)
θ
JA
(MSOP)
θ
JC
(SOP)
θ
JA
(SOP)
θ
JC
(DIP)
θ
JA
(DIP)
56˚C/W
210˚C/W
35˚C/W
170˚C/W
37˚C/W
107˚C/W
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage
−40˚C
≤
T
A
≤
85˚C
2.7V
≤
V
DD
≤
5.5V
215˚C
220˚C
Note 1:
See AN-450 “Surface Mounting and their Effects on Product Reli-
ability” for other methods of soldering surface mount devices.
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 5V unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
V
DD
I
DD
I
SD
V
OS
P
O
Parameter
Power Supply Voltage
Quiescent Current
Shutdown Current
Offset Voltage
Output Power
V
IN
= 0V, I
O
= 0A
V
PIN1
= V
DD
V
IN
= 0V
THD = 0.1% (max); f = 1 kHz;
R
L
= 8Ω
R
L
= 16Ω
R
L
= 32Ω
THD + N = 10%; f = 1 kHz;
R
L
= 8Ω
R
L
= 16Ω
R
L
= 32Ω
THD+N
Total Harmonic Distortion +
Noise
R
L
= 16Ω, P
O
Conditions
LM4881
Typ
(Note 7)
Limit
(Note 8)
2.7
5.5
3.6
0.7
5
200
150
85
300
200
110
6.0
5
50
125
Units (Limits)
V (min)
V (max)
mA (max)
µA (max)
mV (max)
mW (min)
mW
mW
mW
mW
mW
%
%
dB
= 120 mWrms;
0.025
0.02
50
R
L
= 32Ω, P
O
= 75 mWrms;
f = 1 kHz
C
B
= 1.0 µF, V
RIPPLE
= 200
mVrms, f = 120Hz
PSRR
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2
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 3V unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
I
DD
I
SD
V
OS
P
O
Parameter
Quiescent Current
Shutdown Current
Offset Voltage
Output Power
Conditions
V
IN
= 0V, I
O
= 0A
V
PIN1
= V
DD
V
IN
= 0V
THD = 1% (max);
f = 1 kHz;
R
L
= 8Ω
R
L
= 16Ω
R
L
= 32Ω
THD + N = 10%;
f = 1 kHz;
R
L
= 8Ω
R
L
= 16Ω
R
L
= 32Ω
THD+N
Total Harmonic Distortion +
Noise
Power Supply Rejection Ratio
R
L
= 16Ω, P
O
LM4881
Typ
(Note 7)
1.1
0.7
5
Limit
(Note 8)
Units (Limits)
mA
µA
mV
70
65
30
mW
mW
mW
95
65
35
= 60 mWrms;
0.2
0.03
50
mW
mW
mW
%
%
dB
R
L
= 32Ω, P
O
=
25 mWrms; f = 1 kHz
C
B
= 1.0 µF, V
RIPPLE
=
200 mVrms, f = 100 Hz
PSRR
Note 2:
All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 3:
Absolute Maximum Ratings
indicate limits beyond which damage to the device may occur.
Operating Ratings
indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits.
Electrical Characteristics
state DC and AC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 4:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
,
θ
JA
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
− T
A
) /
θ
JA
. For the LM4881, T
JMAX
= 150˚C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 210˚C/W for the MSOP Package and 107˚C/W for package N08E.
Note 5:
Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 6:
Machine Model, 220 pF–240 pF discharged through all pins.
Note 7:
Typicals are measured at 25˚C and represent the parametric norm.
Note 8:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
3
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External Components Description
Compo-
nents
1. R
i
2. C
i
(Figure
1)
Functional Description
Inverting input resistance which sets the closed-loop gain in conjuction with R
f
. This resistor also
forms a high pass filter with C
i
at f
c
= 1 / (2πR
i
C
i
).
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
i
at f
c
= 1 / (2πR
i
C
i
). Refer to the section,
Proper Selection of External
Components,
for and explanation of how to determine the value of C
i
.
Feedback resistance which sets closed-loop gain in conjuction with R
i
.
Supply bypass capacitor which provides power supply filtering. Refer to the
Application Information
section for proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section,
Proper Selection of
External Components,
for information concerning proper placement and selection of C
B
.
Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high pass
