Datasheet

Electrical Characteristics LM2901
4/12
3 Electrical Characteristics
Table 3. V
CC
+
= 5V, V
cc
-
= GND, T
amb
= 25°C (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
V
io
Input Offset Voltage
(1)
T
amb
= +25°C
T
min
≤ T
amb
≤ T
max.
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).
17
15
mV
I
io
Input Offset Current
T
amb
= +25°C
T
min
≤ T
amb
≤ T
max.
550
150
nA
I
ib
Input Bias Current (I
I
+
or I
I
-
)
(2)
T
amb
= 2.5V
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 no loading charge exists on the reference of input lines
25 250
400
nA
A
vd
Large Signal Voltage Gain
(V
cc
= 15V,R
L
=15kΩ, V
o
=1 to 11V)
25 200
V/mV
I
cc
Supply Current (all comparators))
V
CC
= +5V, no load
V
CC
= +30V, no load
1.1
1.3
2
2.5
mA
V
icm
Input Common Mode Voltage Range (V
cc
= 30V)
(3)
T
amb
= +25°C
T
min
≤ T
amb
≤ T
max.
3. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more
than 0.3V. The upper end of the common-mode voltage range is V
CC
+
–1.5V, but either or both inputs can go to
+30V without damage.
0
0
V
CC
+
-1.5
V
CC
+
-2
V
V
id
Differential Input Voltage
(4)
4. The response time specified is for a 100mV input step with 5mV overdrive.
V
CC
+
V
V
OL
Low Level Output Voltage
V
id
= -1V, I
sink
= 4mA
T
amb
= +25°C
T
min
≤ T
amb
≤ T
max
250 400
700
mV
I
oh
High Level Output Current
(V
CC
=V
o
=30V, V
id
= 1V)
T
amb
= +25°C
T
min
≤ T
amb
≤ T
max
0.1
1
nA
µA
I
sink
Output Sink Current (V
id
= -1V,V
o
= 1.5V) 6 16 mA
t
re
Small Signal Response Time
(5)
(R
L
= 5.1kΩ connected to V
CC
+
5. 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 bellow the negative power supply, if used)
1.3
µs
t
rel
Large Signal Response Time
(6)
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
6. Maximum values are guaranteed by design.
500
1
ns
µs