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LM2901/ LM2901A/ LM2903/ LM2903A

DUAL AND QUAD DIFFERENTIAL COMPARATORS

Description

The LM2901/2903 series comparators consist of four and two

independent precision voltage comparators with very low input offset

voltage specification. They are designed to operate from a single

power supply over a wide range of voltages; however operation from

split power supplies is also possible. They offer low power supply

current independent of the magnitude of the power supply voltage.

The LM2901/2903 series comparators are designed to directly

interface with TTL and CMOS. When operating from both plus and

minus power supplies, the LM2901/2903 series comparators will

directly interface with MOS logic where their low power drain is a

distinct advantage over standard comparators.

The dual devices are available in SO-8, TSSOP-8, MSOP-8 and the

quad devices available in SO-14 and TSSOP-14 with industry

standard pinouts. Both use green mold compound as standard.

Pin Assignments

(Top View)

1OUT

1IN-

1IN+

GND

2OUT

2IN-

2IN+

SO-8/TSSOP-8/MSOP-8

LM2903/ LM2903A

(Top View)

1OUT

Features



Wide Power Supply Range:



Single Supply: 2V to 36V



Dual Supplies: ±1.0V to ±18V

Very Low Supply Current Drain – Independent of Supply Voltage



LM2903: 0.6mA



LM2901: 0.9mA

Low Input Bias Current: 25nA

Low Input Offset Current: ±5nA

Typical Offset Voltage:



Non-A Device: 2mV



A Device: 1mV

Common-Mode Input Voltage Range Includes Ground

Differential Input Voltage Range Equal to the Power Supply

Voltage

Low Output Saturation Voltage:



LM2903: 200mV at 4mA



LM2901: 100mV at 4mA

Output Voltage Compatible with TTL, MOS and CMOS

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

2OUT

3OUT

4OUT

GND

4IN+

4IN-

3IN+

3IN-

2IN-

2IN+

1IN-



1IN+



SO-14/TSSOP-14

LM2901/ LM2901A



Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

LM2901/ LM2901A/ LM2903/ LM2903A

Document number: DS36779 Rev. 3 - 2

1 of 18

www.diodes.com

May 2016

LM2901/ LM2901A/ LM2903/ LM2903A

Schematic Diagram

+INPUT

-INPUT

OUTPUT

Functional Block Diagram of LM2901/2901A/2903/2903A

(Each Comparator)

Pin Descriptions

LM2901, LM2901A

Pin Name

1OUT

2OUT

2IN-

2IN+

1IN-

1IN+

3IN-

3IN+

4IN-

4IN+

GND

4OUT

3OUT

LM2903, LM2903A

1OUT

1IN-

1IN+

GND

2IN+

2IN-

2OUT

Pin #

Function

Channel 1 Output

Channel 2 Output

Chip Supply Voltage

Channel 2 Inverting Input

Channel 2 Non-Inverting Input

Channel 1 Inverting Input

Channel 1 Non-Inverting Input

Channel 3 Inverting Input

Channel 3 Non-Inverting Input

Channel 4 Inverting Input

Channel 4 Non-Inverting Input

Ground

Channel 4 Output

Channel 3 Output

Channel 1 Output

Channel 1 Inverting Input

Channel 1 Non-Inverting Input

Ground

Channel 2 Non-Inverting Input

Channel 2 Inverting Input

Channel 2 Output

Chip Supply Voltage

LM2901/ LM2901A/ LM2903/ LM2903A

Document number: DS36779 Rev. 3 - 2

2 of 18

www.diodes.com

May 2016

LM2901/ LM2901A/ LM2903/ LM2903A

Absolute Maximum Ratings

(Note 4) (@T

= +25°C, unless otherwise specified.)

Symbol

—

Supply Voltage

Differential Input Voltage

Input Voltage

Input Current (V

< -0.3V)

Output Voltage

Output Current

Duration of Output Short Circuit to Ground (Note 5)

SO-8

MSOP-8

Package Thermal Impedance

TSSOP-8

(Note 6)

SO-14

TSSOP-14

SO-8

MSOP-8

Package Thermal Impedance

TSSOP-8

(Note 6)

SO-14

TSSOP-14

Operating Temperature Range

Operating Junction Temperature

Storage Temperature Range

Lead Temperature (Soldering, 10 seconds)

Human Body Mode ESD Protection (Note 7)

Machine Mode ESD Protection

Parameter

Rating

-0.3 to +36

Unlimited

TBD

-40 to +125

150

-65 to +150

260

500

100

Unit

—

°C/W

LEAD

ESD

Notes:

°C

4. Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only; functional

operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to

absolute-maximum-rated conditions for extended periods may affect device reliability.

5. Short circuits from outputs to V

can cause excessive heating and eventual destruction.

6. Maximum power dissipation is a function of T

J(MAX)

, θ

, and T

. The maximum allowable power dissipation at any allowable ambient temperature is

= (T

J(MAX)

− T

)/θ

. Operating at the absolute maximum T

of 150°C can affect reliability.

7. Human body model, 1.5kΩ in series with 100pF.

LM2901/ LM2901A/ LM2903/ LM2903A

Document number: DS36779 Rev. 3 - 2

3 of 18

www.diodes.com

May 2016

LM2901/ LM2901A/ LM2903/ LM2903A

Electrical Characteristics

LM2901, LM2901A

Parameter

(Notes 8 & 9) (@V

= 5.0V, GND = 0V, T

= +25°C, unless otherwise specified.)

Conditions

= V

CMR

Min,

= 1.4V,

= 5V to 30V

(Note 10)

Non-A Device

A-Suffix Device

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Min

—

0 to

-1.5

0 to

-2

—

Typ

—

1.2

—

0.9

—

200

300

1.3

100

—

0.1

—

Max

250

500

200

—

Unit

Input Offset Voltage

Input Bias Current

Input Offset Current

IN+

or I

IN−

with OUT in Linear Range,

= 0V (Note 11)

IN+

- I

IN−

, V

= 0V

CMR

Input Common-Mode

Voltage Range

= 30V (Note 12)

Full Range

= 30V

= 5V

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

—

2.5

3.5

3.0

—

400

700

—

V/mV

µs

µA

Supply Current

(Four Comparators)

= ∞ on

Quad Channels

—

O(SINK)

SAT

O(LEAK)

Notes:

Voltage Gain

Large Signal Response time

Response Time

Output Sink Current

Saturation Voltage

Output Leakage Current

Differential Input Voltage

= 15V, V

OUT

= 1V to 11V,

≥ 15kΩ,

= TTL Logic Swing, V

REF

= 1.4V,

= 5V, R

= 5.1kΩ

= 5V, R

= 5.1kΩ (Note 13)

IN−

= 1V, V

IN+

= 0, V

≤ 1.5V

IN−

= 1V, V

IN+

= 0, I

SINK

≤ 4mA

IN−

= 0V, V

IN+

= 1, V

= 5V

IN−

= 0V, V

IN+

= 1, V

= 30V

All V

≥0V (or V- if used) (Note 14)

8. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and

will also depend on the application and configuration. The typical values are not tested and are not guaranteed

on shipped production material.

9. All limits are guaranteed by testing or statistical analysis. Limits over the full temperature are guaranteed by design, but not tested in production.

10. V



1.4V, R

= 0Ω with V

from 5V to 30V;

11. 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 change exists on the input lines.

12. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (@ +25°C). The upper end of

the common-mode voltage range is V

-1.5V (@ +25°C), but either or both inputs can go to +36V without damage, independent of the magnitude of V

13. The response time specified is for a 100mV step input with 5mV overdrive. For larger overdrive signals 300ns can be obtained, see typical

performance characteristics.

14. Positive excursions of input voltage may exceed the power supply level. As long as other voltages remain within the common mode range, the

comparator will provide a proper output stage. The low voltage state must not be less than -0.3V (or 0.3V below the magnitude of the negative power

supply, if used).

LM2901/ LM2901A/ LM2903/ LM2903A

Document number: DS36779 Rev. 3 - 2

4 of 18

www.diodes.com

May 2016

LM2901/ LM2901A/ LM2903/ LM2903A

Electrical Characteristics

LM2903, LM2903A

Parameter

(Notes 8 & 9) (@V

= 5.0V, GND = 0V, T

= +25°C, unless otherwise specified.)

Conditions

= V

CMR

Min,

= 1.4V,

= 5V to =30V

(Note 10)

Non-A Device

A-Suffix Device

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Min

—

0 to

-1.5

0 to

-2

—

Typ

—

0.7

—

0.6

—

200

300

1.3

200

—

0.1

—

Max

250

500

200

—

Unit

Input Offset Voltage

Input Bias Current

Input Offset Current

IN+

or I

IN−

with OUT in Linear Range,

= 0V (Note 11)

IN+

- I

IN−

, V

= 0V

CMR

Input Common-Mode Voltage

Range

= 30V (Note 12)

Full Range

= 30V

= 5V

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

= +25°C

Full Range

—

1.7

3.0

2.0

—

400

700

—

V/mV

µs

µA

Supply Current

= ∞ on

Both Channels

—

O(SINK)

SAT

O(LEAK)

Notes:

Voltage Gain

Large Signal Response Time

Response Time

Output Sink Current

Saturation Voltage

Output Leakage Current

Differential Input Voltage

= 15V, V

OUT

= 1V to 11V,

≥ 15kΩ,

= TTL Logic Swing, V

REF

= 1.4V,

= 5V, R

= 5.1kΩ

= 5V, R

= 5.1kΩ (Note 13)

IN−

= 1V, V

IN+

= 0, V

≤ 1.5V

IN−

= 1V, V

IN+

= 0, I

SINK

≤ 4mA

IN−

= 0V, V

IN+

= 1, V

= 5V

IN−

= 0V, V

IN+

= 1, V

= 30V

All V

≥0V (or V- if used) (Note 14)

8. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and

will also depend on the application and configuration. The typical values are not tested and are not guaranteed

on shipped production material.

9. All limits are guaranteed by testing or statistical analysis. Limits over the full temperature are guaranteed by design, but not tested in production.

10. V



1.4V, R

= 0Ω with V

from 5V to 30V;

11. 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 change exists on the input lines.

12. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (@ +25°C). The upper end of

the common-mode voltage range is V

-1.5V (@ +25°C), but either or both inputs can go to +36V without damage, independent of the magnitude of V

13. The response time specified is for a 100mV step input with 5mV overdrive. For larger overdrive signals 300ns can be obtained, see typical

performance characteristics.

14. Positive excursions of input voltage may exceed the power supply level. As long as other voltages remain within the common mode range, the

comparator will provide a proper output stage. The low voltage state must not be less than -0.3V (or 0.3V below the magnitude of the negative power

supply, if used).

LM2901/ LM2901A/ LM2903/ LM2903A

Document number: DS36779 Rev. 3 - 2

5 of 18

www.diodes.com

May 2016