LM4873MT National Semiconductor, LM4873MT Datasheet - Page 4

• Manufacturer Part Number: LM4873MT
• Description: Dual 2.1W Audio Amplifier Plus Stereo Headphone Function
• Manufacturer: National Semiconductor

www.national.com
Symbol
THD+N
PSRR
X
SNR
V
P
THD+N
PSRR
X
SNR
Symbol
The following specifications apply for V
The following specifications apply for V
TALK
OS
O
TALK
Electrical Characteristics for Bridged-Mode Operation
Electrical Characteristics for Single-Ended Operation
Note 3: All voltages are measured with respect to the ground pins, 2, 7, and 15, unless otherwise specified.
Note 4: 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 5: The
Note 6: The
Note 7: The
Note 8: The
Note 9: The
Note 10: The
Note 11: When driving 3
per minute).
Note 12: When driving 4
Note 13: Output power is measured at the device terminals.
Note 14: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
tion section or the Absolute Maximum Ratings section.
Note 15: Human body model, 100 pF discharged through a 1.5 k
Note 16: Machine model, 220 pF–240 pF discharged through all pins.
Note 17: Typicals are measured at 25˚C and represent the parametric norm.
Note 18: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 19: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.
Output Offset Voltage
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Channel Separation
Signal To Noise Ratio
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Channel Separation
Signal To Noise Ratio
JA
JA
JA
JA
JA
JA
given is for an MXA20A package whose exposed-DAP is soldered to an exposed 2in
given is for an MXA20A package whose exposed-DAP is soldered to an exposed 1in
given is for an MXA20A package whose exposed-DAP is not soldered to any copper.
given is for an MXA28A package whose exposed-DAP is soldered to an exposed 2in
given is for an MXA28A package whose exposed-DAP is soldered to an exposed 1in
given is for an MXA28A package whose exposed-DAP is not soldered to any copper.
Parameter
Parameter
loads from a 5V supply, the LM4873MTE or LM4873MTE-1 must be mounted to the circuit board and forced-air cooled (450 linear-feet
loads from a 5V supply, the LM4873MTE or LM4873MTE-1 must be mounted to the circuit board.
DMAX
= (T
JMAX
− T
DD
DD
A
)/
= 5V unless otherwise specified. Limits apply for T
= 5V unless otherwise specified. Limits apply for T
JA
V
THD = 0.5%, f = 1 kHz, R
THD+N = 1%, f = 1 kHz, R
THD+N = 10%, f = 1 kHz, R
A
R
C
f = 1 kHz
f = 1 kHz, C
V
. For the LM4873, T
20 Hz
V
C
f = 1 kHz, C
V
IN
V
DD
L
B
DD
DD
B
= 32
= −1, P
= 1.0 µF, V
= 0V
= 1.0 µF
= 5V, P
LM4873MTE-1, R
LM4873, R
= 5V, V
= 5V, P
f
resistor.
O
B
20 kHz, A
O
B
RIPPLE
O
= 75 mW, 20 Hz
= 1.0 µF
= 340mW, R
RIPPLE
= 1.0 µF
= 1.1W, R
JMAX
L
= 8 , P
Conditions
Conditions
4
= 150˚C. For the
= 200 mV
= 200 mV
VD
L
= 4 , P
L
= 2
O
L
= 8
L
L
= 1W
= 32
L
= 8
= 8
RMS
= 8
O
f
RMS
, R
JA
= 2W
20 kHz,
2
2
2
2
s for different packages, please see the Application Informa-
,
L
JMAX
piece of 1 ounce printed circuit board copper.
piece of 1 ounce printed circuit board copper.
piece of 1 ounce printed circuit board copper.
piece of 1 ounce printed circuit board copper.
= 8 ,
,
JA
, and the ambient temperature T
(Notes 3, 4)
(Notes 3, 4) (Continued)
A
A
= 25˚C.
= 25˚C.
Typical
Typical
(Note
(Note
17)
0.3
0.3
67
80
97
340
440
17)
0.2
85
52
60
94
5
LM4873
LM4873
Limit
(Note
Limit
(Note
18)
18)
50
75
A
. The maximum
mV (max)
mW (min)
(Limits)
(Limits)
Units
Units
mW
mW
dB
dB
dB
%
dB
dB
dB
%