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Electrical Characteristics
Electrical Characteristics, Operational Amplifier Only
LM392
LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR
SLOS466 – JANUARY 2006
V+ = 5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS T
A
MIN TYP MAX UNIT
At output switch point, V
O
≈ 1.4 V, 25°C ± 2 ± 5
V
IO
Input offset voltage R
S
= 0 Ω , V+ = 5 V to 30 V, mV
0 ° C to 70 ° C ± 7
V
CM
= 0 V to (V+ – 1.5 V)
IN(+) or IN(–), V
CM
= 0 V
(1)
25°C 50 205
I
IB
Input bias current nA
IN(+) or IN(–) 0 ° C to 70 ° C 400
25°C ± 5 ± 50
I
IO
Input offset current IN(+) – IN(–) nA
0 ° C to 70 ° C 150
25°C 0 V+ – 1.5
V
CM
Input common-mode voltage
(2)
V+ = 30 V V
0 ° C to 70 ° C 0 V+ – 2
V+ = 30 V 1 2
I+ Supply current R
L
= ∞ 0 ° C to 70 ° C mA
V+ = 5 V 0.5 1
Amplifier-to-amplifier coupling f = 1 kHz to 20 kHz, Input referred
(3)
25°C –100 dB
V
DI
Differential input voltage All V
IN
≥ 0 V (or V–, if used)
(4)
0 ° C to 70 ° C 32 V
(1) The direction of the input current is out of the device due to the PNP input stage. This current essentially is constant and independent of
the state of the output, so no loading change exists on the input lines.
(2) The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3 V. The upper end
of the common-mode voltage range is V+ – 1.5 V, but either or both inputs can go to 32 V without damage.
(3) Due to proximity of external components, ensure that coupling is not originating via the stray capacitance between these external parts.
This typically can be detected, as this type of capacitive coupling increases at higher frequencies.
(4) Positive excursions of input voltage may exceed the power-supply level. As long as the other input voltage remains within the
common-mode range, the comparator provides a proper output state. The input voltage to the operational amplifier should not exceed
the power-supply level. The input voltage state must not be less than –0.3 V (or 0.3 V below the magnitude of the negative power
supply, if used) on either amplifier.
V+ = 5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS T
A
MIN TYP MAX UNIT
V+ = 15 V, V
O
swing = 1 V to 11 V,
A
VD
Large signal voltage gain 25°C 25 100 V/mV
R
L
= 2 k Ω
V
OS
Output voltage swing R
L
= 2 k Ω 25°C 0 V+ – 1.5 V
Common-mode rejection
CMRR V
CM
= 0 V to (V+ – 1.5 V) 25°C 65 70 dB
ratio
Power-supply
k
SVR
25°C 65 100 dB
rejection ratio
V
IN(+)
= 1 V, V
IN(–)
= 0 V, V+ = 15 V,
I
source
Output source current 25°C 20 40 mA
V
O
= 2 V
V
IN(–)
= 1 V, V
O
= 2 V 10 20 mA
I
sink
Output sink current V
IN(+)
= 0 V, 25°C
V
O
= 200 mV 12 50 µ A
V+ = 15 V
α V
IO
Input offset voltage drift R
S
= 0 Ω 0 ° C to 70 ° C 7 µ V/ ° C
α I
IO
Input offset current drift R
S
= 0 Ω 0 ° C to 70 ° C 10 pA/ ° C
4
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