Datasheet

LM4862
www.ti.com SNAS102F –MAY 1997–REVISED MAY 2013
Electrical Characteristics
(1)(2)
The following specifications apply for V
DD
= 5V unless otherwise specified. Limits apply for T
A
= 25°C.
Symbol Parameter Conditions LM4862 Units
(Limits)
Typical
(3)
Limit
(4)
V
DD
Supply Voltage 2.7 V (min)
5.5 V (max)
I
DD
Quiescent Power Supply Current V
IN
= 0V, I
O
= 0A
(5)
3.6 6.0 mA (max)
I
SD
Shutdown Current V
PIN1
= V
DD
0.7 5 μA (max)
V
OS
Output Offset Voltage V
IN
= 0V 5 50 mV (max)
P
O
Output Power THD = 1% (max); f = 1 kHz; R
L
= 8Ω 675 500 mW (min)
THD + N = 10%; f = 1 kHz; R
L
= 8Ω 825 mW
THD + N Total Harmonic Distortion + Noise P
O
= 500 mWrms; R
L
= 8Ω 0.55 %
A
VD
= 2; 20 Hz ≤ f ≤ 20 kHz
PSRR Power Supply Rejection Ratio V
DD
= 4.9V to 5.1V 50 dB
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3) Typicals are measured at 25°C and represent the parametric norm.
(4) Limits are ensured to TI's AOQL (Average Outgoing Quality Level).
(5) The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.
Automatic Switching Circuit
Figure 3. Automatic Switching Circuit
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