LM4900 National Semiconductor, LM4900 Datasheet - Page 4

• Manufacturer Part Number: LM4900
• Description: 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
• Manufacturer: National Semiconductor

www.national.com
I
I
V
P
PSRR
DD
SD
Symbol
THD+N
The following specifications apply for V
25˚C
OS
O
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee 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 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
150˚C. The typical junction-to-ambient thermal resistance, when board mounted, is 190˚C/W for package number MUA08A.
Note 4: Human body model, 100pF discharged through a 1.5k
Note 5: Machine Model, 220pF–240pF discharged through all pins.
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.
Note 9: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 10: Unterminated input.
Note 11: 10
Electrical Characteristics
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Power Supply Rejection Ratio
Total Harmonic Distortion+Noise
terminated input.
Parameter
DMAX
= (T
JMAX
− T
DD
A
)/
= 2.6V, for all available packages, unless otherwise specified. Limits apply for T
JA
(Note 1) (Note 2)
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4900, T
V
V
V
THD = 1% (max); f = 1kHz; R
P
20Hz
V
IN
PIN1
IN
O
RIPPLE
resistor.
= 100 mWrms; A
= 0V, I
= 0V
= V
f
= 200mV sine p-p
DD
O
20kHz, BW
f = 217Hz (Note 11)
f = 1KHz (Note 11)
= 0A (Note 8)
Conditions
4
VD
<
= 2; R
80kHz
L
L
= 8
= 8 ;
JMAX
,
JA
, and the ambient temperature T
(Note 6)
Typical
130
2.6
0.1
0.4
58
63
5
LM4900
(Notes 7,
Limit
2.0
9)
4
A
. The maximum
mA (max)
µA (max)
(Limits)
Units
JMAX
mW
mV
A
dB
%
=
=