LM4874 National Semiconductor, LM4874 Datasheet - Page 3

• Manufacturer Part Number: LM4874
• Description: 2.1W Differential Input/ BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown
• Manufacturer: National Semiconductor

V
I
I
V
PSRR
P
THD+N
S/N
R
DD
SD
Symbol
DD
OS
O
IN
Absolute Maximum Ratings
3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics for LM4874
The following specifications applies to the LM4874 when used in the circuit shown in Figure 1 and operating with V
A
Note 1: An LM4874MH that has been properly mounted to a circuit board with a copper heatsink area of at least 2in
Note 2: All voltages are measured with respect to the GND pin unless other wise 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
functional but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions that
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 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θ
allowable power dissipation is P
currents for more information.
Note 5: Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 4)
ESD Susceptibility (Note 5)
ESD Susceptibility (Note 6)
Junction Temperature
Soldering Information
V
Small Outline Package
= 6dB, unless otherwise specified. Limits apply for T
Vapor Phase (60 sec.)
Supply Voltage
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Supply Rejection Ratio
Output Power (Note 11)
Total Harmonic Distortion + Noise
Signal-to-Noise Ratio
Input Resistance
Parameter
DMAX
= (T
JMAX
- T
−0.3V to V
A
/θ
JA
-65˚C to + 150˚C
Internally Limited
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4874, see power derating
(Notes 2,
DD
V
V
V
sinewave, C
R
THD+N = 1% (max), f = 1kHz (Note12)
THD+N = 10% (max), f = 1kHz
(Note12)
20Hz ≤ f ≤ 20kHz
f = 1kHz, C
P
Pins 5, 7, 9, and 17
+ 0.3V
2000V
IN
shutdown
DD
O
150˚C
215˚C
L
R
R
R
R
R
R
R
R
200V
6.0V
= 8Ω
= 1.1W, R
= 0V, I
L
L
L
L
L
L
L
L
A
= 5V, V
= 3Ω
= 4Ω
= 8Ω
= 3Ω
= 4Ω
= 8Ω
= 4Ω, P
= 8Ω, P
= 25˚C.
= GND
O
BYPASS
(Notes 2, 8)
3
BYPASS
RIPPLE
= 0A, R
O
O
L
Conditions
= 2W
= 1W
= 8Ω
Operating Ratings
See AN-450 “Surface Mounting and their Effects on
Product Reliability” for other methods of soldering surface
mount devices.
Thermal Resistance
Temperature Range
Supply Voltage
θ
θ
T
= 0.47µF,
= 200mV
= 0.47µF,
JC
JA
MIN
L
Infrared (15 sec.)
=
(typ) MXA20A
(typ) MXA20A
≤ T
∞
A
P-P
≤T
MAX
JA
, and the ambient temperature, T
2
(Note 8)
will deliver 1.9W into 4Ω or 2.1W into 3Ω.
Typical
9.0
0.1
2.1
1.9
1.2
2.6
2.6
1.5
0.3
0.3
62
97
7
LM4874
See Table 1.
(Notes 9,
3.0 V ≤ V
−40˚C ≤ TA ≤ 85˚C
Limit
12.0
10)
3.0
5.5
1.0
1.0
50
41˚C/W (Note 7)
A
. The maximum
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DD
DD
mA (max)
mV (max)
µA (max)
= 5V and
(Limits)
≤ 5.5V
V (max)
W (min)
2˚C/W
V (min)
220˚C
Units
dB
dB
W
W
W
W
W
%
%