Datasheet LM2903N, LM2903D, LM2903 Datasheet (SGS Thomson Microelectronics)



LOW POWERDUAL VOLTAGE COMPARATORS

.WIDESINGLESUPPLYVOLTAGE RANGEOR

DUAL SUPPLIES +2V TO +36V OR ±1V TO
±18V

.VERYLOWSUPPLYCURRENT(0.4mA)INDE-

PENDENT OF SUPPLYVOLTAGE
(1 mW/comparator at +5V)

.LOW INPUT BIAS CURRENT : 25nA TYP

.LOW INPUT OFFSET CURRENT : ±5nA TYP

.INPUT COMMON-MODE VOLTAGE RANGE

INCLUDESGROUND

.LOW OUTPUT SATURATION VOLTAGE :

250mV TYP. (IO= 4mA)

.DIFFERENTIAL INPUT VOLTAGE RANGE

EQUAL TO THE SUPPLY VOLTAGE

.TTL, DTL, ECL, MOS, CMOS COMPATIBLE

OUTPUTS

DESCRIPTION

This device consistsof two independent low power
voltagecomparators designed specifically to oper­ate from a single supply over a wide range of volt­ages. Operation from split power supplies is also
possible.
These comparators also have a unique
characteris-tic in the fact that the input com­mon-mode voltage range includes ground even
though operated from a single power supply volt­age.

N

DIP8

(PlasticPackage)

(Thin ShrinkSmall Outline Package)

ORDER CODES

Part

Number

LM2903 -40, +125

Example : LM2903N

Temperature

Range

LM2903

(PlasticMicropackage)

P

TSSOP8

o

C

D

SO8

Package

NDP

•••

PIN CONNECTIONS (t op v ie w)

1

2

-

+

3

45

April 2000

8

1 - Output 1

7

-

+

6

2 - Inverting input 1
3 - Non-inverting input 1

-

4-V

CC

5 - Non-inverting input 2
6 - Inverting input 2
7 - Output 2

+

8-V

CC

1/10

LM2903

SCHEMATIC DIAGR AM (1/2 LM2903)

V

CC

3.5

µA

Non-inverting

Input

V

CC

Inverting

Input

ABSOLUTE MAXIMUM RATINGS

100

µA

V

3.5µA 100µA

CC

V

O

V

CC

Symbol Parameter Value Unit

V

CC

V

id

V

Supply Voltage

±18 or 36
Differential Input Voltage !36 V
Input Voltage -0.3 to +36 V

i

Output Short-circuit to Ground – (note 1) Infinite

P

tot

T

oper

T

stg

Notes : 1. Short-circuit f rom the output toV

Power Dissipation 830 mW
Operating Free-air TemperatureRange -40 to +125
Storage Temperature Range -65 to +150

+

can cause excessive heating and eventual destruction. The maximum output

current is approximately 20mA, i ndependent of the magnitude of V

CC

+

.

CC

2/10

V

o

C

o

C

LM2903

ELECTRICAL CHARACTERISTICS

+

V

= +5V, V

CC

Symbol Parameter Min. Typ. Max. Unit

V

io

I

ib

I

io

A

vd

I

CC

V

icm

V

id

I

sink

V

OL

I

OH

t

re

t

rel

Notes : 2.

3. The directi on of thei nput current is out of the IC duet o the PNP input stage. This current isessenti ally constant,

4. The input common-mode voltage of either inputs ignal voltage should not beal lowed to go negative bym ore than

5. The response t i me specified is for a 100mV input step with 5mV overdrive.

6. Po sit ive excurs io ns of i nput vol tag e may exceed the power s upply l evel.

7. Maximum values are guaranteed by design.

–

CC

= 0V, T

=25oC (unless otherwise specified)

amb

Input Offset Voltage – (note 2)

T

amb

T

min

= +25oC

. ≤ T

amb

≤ T

max.

17

15

Input Bias Current – (note 3)

T

amb

T

min

= +25oC

. ≤ T

amb

≤ T

max.

25 250

400

Input Offset Current

T

= +25oC

amb

. ≤ T

T

min

amb

≤ T

max.

Large Signal Voltage Gain

V

= 15V, RL= 15kΩ,Vo= 1 to 11V

CC

25 200

550

150

V/mV

Supply Current (all comparators)

V

= 5V, no load

CC

V

= 30V, no load

CC

Input Common Mode Voltage Range (VCC= 30V) - (note 4)

T

amb

T

min

= +25oC

. ≤ T

amb

≤ T

max.

0
0

Differential Input Voltage - (note 6) V

0.4
1

1

2.5

+

V

-1.5

CC

+

V

-2

CC

+

CC

Output Sink Current

(V

= -1V, VO= 1.5V) 6 16

id

Low Level Output Voltage

(V
T
T

amb
min

= -1V, I

id

=25oC

. ≤ T

amb

sink

≤ T

= 4mA)

max.

250 400

700

High Level Output Current

(V

= 1V, VCC=VO= 30V)

id

T

=25oC

amb

. ≤ T

T

min

Small Signal Response Time

(R

L

Large Signal Response Time - (note 7)

TTL Input (V
Output Signal at 50% of final value

≤ T

amb

max.

= 5.1kΩ to V

ref

+

) - (note 5)

CC

= +1.4 V, RL= 5.1kΩ to V

+

)

CC

Output Signal at 95% of final value

At output switch point, VO#1.4V,RS=0Ωwith V

+

toV

1.5V).

CC

independent of t he state of the output, so no l oading charge exi sts on the reference or input li nes.

0.3V. T he upper end of the common-mode voltage range is V
without damage.

As long asthe other voltage remains w ithin thec ommon-mode range thecomparator wil lprovide a proper output
state. Thelow i nput voltagestat e mustnot beles s than–0.3V (or0. 3V belowt henegative power supply, if used).

+

from 5Vto30V andoverthe full inputcommon-mode range (0V

CC

+

–1.5V, but either or both inputs can go to +30V

CC

0.1

1

1.3

500

1

mV

nA

nA

mA

V

V

mA

mV

nA

µA

µs

ns
µs

3/10

LM2903

SUPPLY CURRENT versus
SUPPLY VOLTAGE

1

0.8

0.6

0.4

0.2

SUPPLY CURRENT (mA)

0

10 20 30 40

SUP PLY VOLTAGE (V)

OUTPUT SATURATION VOLTAGE
versus OUTPUT CURRENT

1

10

Out ofsaturati on

0

10

T

=+125 C

amb

=+25 C

T

amb

10

-1

10

0

OUTPUT SINKCURRENT (mA)

SATURATION VOLTAGE (V)

10

10

10

-1

-2

-3

10

-2

T

T

10

amb

T

T

amb

T

amb

amb

1

=-55 C

=0 C

amb

=+25 C

T

=+70 C

amb

=+125 C

R

=

=-55 C

10

INPUT CURRENT versus
SUPPLY VOLTAGE

80

V=0V

i

60

40

R=10

i

T

amb

9

Ω

=0 C

T

=+25 C

amb

T

amb

=-55 C

20

=+125 C

T

INPUT CURRENT (nA)

amb

T

amb

0

10 20 30 40

SUPPLY VOLTAGE (V)

RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES - NEGATIVE TRANSITION

6

Input overdrive : 5mV

5
4

20mV

3
2
1

100mV

0
0

-50

-100

2

0 0.5 1 1.5 2

TIME(µs)

INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)

T

amb

e

I

=+25 C

=+70 C

5V

5.1kΩ

e

o

4/10

RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES - POSITIVE TRANSITION

6

Input overdrive : 100mV

5

INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)

100

50

4
3
2
1

20mV

0

T

= + 25 C

amb

0

0 0.5 1 1.5 2

TIME (µs)

5mV

5V

Ω

5.1k

e

I

e

o

TYPIC AL APPLICATI O N S

BASIC COMPARATOR

LM2903

DRIVING CMOS

+V

(ref)

-V

(ref)

DRIVING TTL

+V

(ref)

-V

(ref)

1/2

LM2903

1/2

LM2903

VCC=5V

Ω

15k

5V

10k

Ω

&

&

V

5V

Ω

100k

+V

(ref)

O

-V

(ref)

LOWFREQUENCY OP AMP

~

e

1k

I

1/2

LM2903

Ω

1/2

LM2903

100k

A = 100

V

&

5V

Ω

15k

e

o

Ω

0.5µF

LOW FREQUENCY OP AMP

(e = 0V for e = 0V)

o

~

e

I

Ω

1k

I

1/2

LM2903

100k

A = 100

5V

15k

0.5µF

Ω

V

Ω

2N 2222

e

TR ANSD U CER AMPLIFIER

5V

Magnetic pick-up

Ω

o

10k

10k

Ω

1/2

LM2903

20M

Ω

3k

e

o

Ω

5/10

LM2903

LOW FREQUENCY OP AMP WITH OFFSET
ADJUST

5V

Offse t Adjust

100k

Ω

5V

Ω

R2

R

s

~

e

I

1M

R

I

1k

Ω

1M

Ω

15k

1/2

LM2903

0.5µF

R1

100k

Ω

2N 2222

Ω

e

o

TW O D ECADES H IG H FREQUENCY VC O

Ω

100k

1/2

V

control

20k

+50V

LM2903

Ω

Frequencycon trol

voltage input

v

control

0.1µF

20k

Ω

50k

V

=+30V

CC

+250mV

700 Hz f 100kHz

Ω

o

ZERO CROSSING D ETE CT OR
(SI NGLE P OWER SUPP LY )

100k

5.1k

1N4148

LM2903

/2

Ω

100k

1/2

500pF

e

I

V

CC

1/2

LM2903

Ω

3k

5.1k

0.01µF

5.1k

V

CC

Ω

Ω

V

CC

/2

5V

Ω

Ω

10k

Ω

V

CC

100k

1/2

LM2903

20M

Ω

3k

Ω

Ω

Output 1

Output 2

5.1k

Ω

LIMIT COMPARATOR

2R

S

R

S

~

2R

S

6/10

high

low

V

(ref)

e

I

V

(ref)

1/2

LM2903

1/2

LM2903

10k

CRYSTAL CON TR O LLED OSC ILLATOR

V

(12V)

V

CC

Ω

0.1µF

200k

200k

Ω

Ω

Lamp

2N 2222

= 15V

CC

Ω

100k

1/2

LM2903

f = 100kHz

Ω

2k

V

CC

0

e

o

LM2903

SPLIT-SUPPLY APPLICATIONS

ZERO CROSSING DETECTOR

15V

1/2

LM2903

~

e

I

15V

5.1k

COMPARAT OR WI TH A NEGATIV E REF­ERENCE

15V

Ω

e

o

~

e

I

1/2

LM2903

5.1k

Ω

e

o

5V

15V

7/10

LM2903

PACKAGE MECHANICAL DATA

8 PINS -PLASTIC DIP

Dimensions

A 3.32 0.131

a1 0.51 0.020

B 1.15 1.65 0.045 0.065

b 0.356 0.55 0.014 0.022

b1 0.204 0.304 0.008 0.012

D 10.92 0.430
E 7.95 9.75 0.313 0.384

e 2.54 0.100
e3 7.62 0.300
e4 7.62 0.300

F 6.6 0260

i 5.08 0.200
L 3.18 3.81 0.125 0.150
Z 1.52 0.060

Min. Typ. Max. Min. Typ. Max.

Millimeters Inches

8/10

PACKAGE MECHANICAL DATA

8 PINS -PLASTIC MICROPACKAGE (SO)

LM2903

Dimensions

Min. Typ. Max. Min. Typ. Max.

Millimeters Inches

A 1.75 0.069
a1 0.1 0.25 0.004 0.010
a2 1.65 0.065
a3 0.65 0.85 0.026 0.033

b 0.35 0.48 0.014 0.019

b1 0.19 0.25 0.007 0.010

C 0.25 0.5 0.010 0.020
c1 45

o

(typ.)
D 4.8 5.0 0.189 0.197
E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 3.81 0.150

F 3.8 4.0 0.150 0.157
L 0.4 1.27 0.016 0.050

M 0.6 0.024

S8

o

(max.)

9/10

LM2903

PACKAGE MECHANICAL DATA

8 PINS -THIN SHRINK SMALL OUTLINE PACKAGE

c

E1

A2

A1

0,25 mm
.010 inch

GAGE PLANE

SEATING

5

PLANE

k

L

L1

C

EA

Dim.

D

b

Caaa

8

PIN 1 IDENTIFICATION

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

e

14

A 1.20 0.05

A1 0.05 0.15 0.01 0.006
A2 0.80 1.00 1.05 0.031 0.039 0.041

b 0.19 0.30 0.007 0.15

c 0.09 0.20 0.003 0.012
D 2.90 3.00 3.10 0.114 0.118 0.122
E 6.40 0.252

E1 4.30 4.40 4.50 0.169 0.173 0.177

e 0.65 0.025

k0

o

o

8

o

0

l 0.50 0.60 0.75 0.09 0.0236 0.030

o

8

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10/10