Datasheet

Electrical characteristics LM2903
4/14
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
min
≤ T
amb
≤ T
max
17
15
mV
I
io
Input offset current
T
min
≤ T
amb
≤ T
max
550
150
nA
I
ib
Input bias current
(2)
T
min
≤ T
amb
≤ T
max
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
0.4
1
1
2.5
mA
V
id
Differential input voltage
(3)
V
CC
+
V
V
OL
Low level output voltage (V
id
= -1V, I
sink
= 4mA)
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
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
res
Small signal response time
(4)
(R
L
= 5.1kΩ to V
CC
+
)1.3µs
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
500
1
ns
µs
1. At output switch point, V
O
≈ 1.4 V, R
S
= 0 Ω 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).
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.
3. 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).
4. The response time specified is for a 100 mV input step with 5 mV overdrive.
5. Maximum values are guaranteed by design and evaluation.