Electrical characteristics
LM2901
3
Electrical characteristics
Table 3.
Symbol
V
io
I
io
I
ib
A
vd
Electrical characteristics at V
CC+
= 5V, V
CC-
= GND, T
amb
= 25°C
(unless otherwise specified)
Parameter
Input offset voltage
(1)
T
min
≤
T
amb
≤
T
max
Input offset current
T
min
≤
T
amb
≤
T
max
Input bias current (I
I+
or I
I-
)
(2)
T
min
≤
T
amb
≤
T
max
Large signal voltage gain
(V
CC
= 15V,R
L
=15kΩ V
o
=1 to 11V)
,
Supply current (all comparators)
V
CC
= +5V, no load
V
CC
= +30V, no load
Differential input voltage
(3)
Low level output voltage
V
id
= -1V, I
sink
= 4mA
T
min
≤
T
amb
≤
T
max
High level output current
(V
CC
=V
o
=30V, V
id
= 1V)
T
min
≤
T
amb
≤
T
max
Output sink current (V
id
= -1V,V
o
= 1.5V)
Small signal response time
(4)
(R
L
= 5.1kΩ connected to V
CC+
)
Large signal response time
(5)
TTL input (V
ref
=+1.4 V, R
L
=5.1kΩ to V
CC+
)
Output signal at 50% of final value
Output signal at 95% of final value
500
1
ns
µs
6
250
25
200
25
5
Min.
Typ.
1
Max.
7
15
50
150
250
400
Unit
mV
nA
nA
V/mV
I
CC
V
id
V
OL
1.1
1.3
2
2.5
V
CC+
400
700
mA
V
mV
I
OH
I
sink
t
res
0.1
1
16
1.3
nA
µA
mA
µs
t
rel
1.
At output switch point, V
O
≈
1.4V, R
S
= 0 with V
CC+
from 5V to 30V, and over the full input common-mode
range (0V to V
CC+
–1.5V).
2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially
constant, independent of the state of the output, so there is no loading charge on the reference of input
lines.
3. The response time specified is for a 100mV input step with 5mV overdrive.
4. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage
remains within the common-mode range, the comparator will provide a proper output state. The low input
voltage state must not be less than –0.3V (or 0.3V below the negative power supply, if used).
5. Maximum values are guaranteed by design.
4/13
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