LP211, LP311

LOW POWER DIFFERENTIAL COMPARATORS

WITH STROBES

SLCS003D − JUNE 1987 − REVISED SEPTEMBER 2003

3

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

TA

MIN

TYP†

MAX

UNIT

VID

Input offset voltage

RS < 100 k

Ω

See Note 7

25

°C

2

7.5

mV

VID

Input offset voltage

RS < 100 k

Ω,

See Note 7

Full range

10

mV

VID < −10 mV,

IOL = 25 mA,

25

°C

0.4

1.5

VID < −10 mV,

See Note 8

IOL = 25 mA,

25

°C

0.4

1.5

VOL

Low-level output voltage

VCC = 4.5 V,

VID < −10 mV,

VCC− = 0,

IOL = 1.6 mA,

Full range

0.1

0.4

V

CC

VID < −10 mV,

See Note 8

CC−

IOL = 1.6 mA,

Full range

0.1

0.4

IIO

Input offset current

See Note 7

25

°C

2

25

nA

IIO

Input offset current

See Note 7

Full range

35

nA

IIB

Input bias current

25

°C

15

100

nA

IIB

Input bias current

Full range

150

nA

Low-level strobe current

V(strobe) = 0.3 V,

VID < −10 mV,

25

°C

100

300

A

Low-level strobe current

V(strobe) = 0.3 V,

See Note 9

VID < −10 mV,

25

°C

100

300

µA

IO(off) Output off-state current

VID > 10 mV,

VCE = 35 V

25

°C

0.2

100

nA

AVD

Large-signal differential-voltage

RL = 5 kΩ

25

°C

40

100

V/mV

AVD

Large-signal differential-voltage

amplification

RL = 5 kΩ

25

°C

40

100

V/mV

ICC+

Supply current from VCC+

VID = −50 mV,

RL = ∞

Full range

150

300

µA

ICC−

Supply current from VCC−

VID = 50 mV,

RL = ∞

Full range

− 80

− 180

µA

† All typical values are at VCC± = ±15 V, TA = 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 VCC− tied together.

9. The strobe should not be shorted to ground; it should be current driven at 100

µA to 300 µA.

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.