Datasheet
LP211, LP311
LOW-POWER DIFFERENTIAL COMPARATORS
WITH STROBES
SLCS003D − JUNE 1987 − REVISED SEPTEMBER 2003
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, V
CC
±
= ±15 V (unless otherwise noted)
PARAMETER TEST CONDITIONS T
A
MIN TYP
†
MAX UNIT
V
Input offset voltage
RS 100 kΩ
See Note 7
25°C 2 7.5
mV
V
ID
Input offset voltage RS < 100 kΩ, See Note 7
Full range
10
mV
V
ID
< −10 mV, I
O
L
= 25 mA,
25°C
04
15
V
ID
<
10
mV
,
See Note 8
I
OL
=
25
mA
,
25°C
0.4 1.5
V
OL
Low-level output voltage
V
CC
= 4.5 V,
V <10mV
V
CC−
= 0,
I 16mA
Full range
01
04
V
V
ID
< −10 mV,
See Note 8
I
OL
= 1.6 mA,
Full range
0.1 0.4
I
Input offset current
See Note 7
25°C 2 25
nA
I
IO
Input offset current See Note 7
Full range 35
nA
I
Input bias current
25°C 15 100
nA
I
IB
Input bias current
Full range 150
nA
Low level strobe current
V
(st
r
obe)
= 0.3 V, V
ID
< −10 mV,
25°C
100
300
A
Low-level strobe current
V
(strobe)
=
0
.
3
V
,
See Note 9
V
ID
<
10
mV
,
25°C
100 300 μA
I
O(off)
Output off-state current V
ID
> 10 mV, V
CE
= 35 V 25°C 0.2 100 nA
A
Lar
g
e-si
g
nal differential-volta
g
e
R 5kΩ
25°C
40
100
V/mV
A
VD
Large signal
differential voltage
amplification
R
L
= 5 kΩ 25°C 40 100 V/mV
I
CC+
Supply current from V
CC+
V
ID
= −50 mV, R
L
= ∞ Full range 150 300 μA
I
CC−
Supply current from V
CC−
V
ID
= 50 mV, R
L
= ∞ Full range − 80 − 180 μA
†
All typical values are at V
CC
±
= ±15 V, T
A
= 25°C.
NOTES: 7. The offset voltages and offset currents given are the maximum values required to drive the output within 1 V of either supply with
a 1-mA load. Thus, these parameters define an error band and take into account the worst-case effects of voltage gain and input
impedance.
8. Voltages are with respect to EMIT OUT and V
CC−
tied together.
9. The strobe should not be shorted to ground; it should be current driven at 100 μA to 300 μA.
switching characteristics, V
CC
±
= ±5 V, T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TYP UNIT
Response time See Note 10 1.2 μs
NOTE 10: The response time is specified for a 100-mV input step with 5-mV overdrive.