Datasheet

Electrical characteristics LM2901
4/17 Doc ID 2468 Rev 7
3 Electrical characteristics
Table 3. Electrical characteristics at V
CC
+
= 5 V, V
CC
-
= GND, T
amb
= 25° C
(unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
V
io
Input offset voltage
(1)
T
min
≤ T
amb
≤ T
max
1. At output switch point, V
O
≈ 1.4 V, R
S
= 0 with V
CC
+
from 5 V to 30 V, and over the full input common-
mode range (0 V to V
CC
+
–1.5 V).
17
15
mV
I
io
Input offset current
T
min
≤ T
amb
≤ T
max
550
150
nA
I
ib
Input bias current (I
I
+
or I
I
-
)
(2)
T
min
≤ T
amb
≤ T
max
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.
25 250
400
nA
A
vd
Large signal voltage gain
(V
CC
= 15 V, R
L
=15kΩ, V
o
= 1 to 11 V)
25 200 V/mV
I
CC
Supply current (all comparators)
V
CC
= +5 V, no load
V
CC
= +30 V, no load
1.1
1.3
2
2.5
mA
V
id
Differential input voltage
(3)
3. The response time specified is for a 100 mV input step with 5 mV overdrive.
V
CC
+
V
V
OL
Low level output voltage
V
id
= -1V, I
sink
= 4 mA
T
min
≤ T
amb
≤ T
max
250 400
700
mV
I
OH
High level output current
(V
CC
=V
o
= 30 V, V
id
= 1 V)
T
min
≤ T
amb
≤ T
max
0.1
1
nA
µA
I
sink
Output sink current (V
id
= -1 V,V
o
= 1.5 V) 6 16 mA
t
res
Small signal response time
(4)
(R
L
= 5.1 kΩ connected to V
CC
+
)
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 –0.3 V (or 0.3 V below the negative power supply, if used).
1.3 µs
t
rel
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
5. Maximum values are guaranteed by design.
500
1
ns
µs