Datasheet LP365MX, LP365M, LP365AN Datasheet (NSC)

TL/H/5023

LP265/LP365 Micropower Programmable Quad Comparator

December 1994

LP265/LP365 Micropower Programmable
Quad Comparator

General Description

The LP365 consists of four independent voltage compara­tors. The comparators can be programmed, four at the
same time, for various supply currents, input currents, re­sponse times and output current drives. This is accom­plished by connecting a single resistor between the V

CC

and I

SET

pins.

These comparators can be operated from split power sup­plies or from a single power supply over a wide range of
voltages. The input can sense signals at ground level even
with single supply operation. The unique output NPN tran­sistor stages are uncommitted to either power supply. They
can be connected directly to various logic system supplies
so that they are highly flexible to interface with various logic
families.

Application areas include battery power circuits, threshold
detectors, zero crossing detectors, simple serial A/D con­verters, VCO, multivibrators, voltage converters, power se­quencers, and high performance V/F converters, and RTD
linearization.

Features

Y

Single programming resistor to tailor power consump­tion, input current, speed and output current drive
capability

Y

Wide single supply voltage range or dual supplies (4
V

DC

to 36 VDCorg2.0 VDCtog18 VDC)

Y

Low supply current drain (10 mA) and low power
consumption (10 mW/comparator)

@

I

SET

e

0.5 mA

V

CC

e

5

VDC

Y

Uncommitted output stageÐselectable output levels

Y

Output directly compatible with DTL, TTL, CMOS, MOS
or other special logic families

Y

Input common-mode range includes ground

Y

Differential input voltage equal to the power supply
voltage

Typical Connection

TL/H/5023– 1

Programming Equation

I

SET

e

(Va)b(Vb)b1.3V

R

SET

I

SUPPLY

&

22

c

I

SET

Connection Diagram

Dual-In-Line Package

TL/H/5023– 2

Order Number LP365M, LP365AN or LP365N

See NS Package Numbers M16A or N16A

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

Absolute Maximum Ratings

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Supply Voltage 36 V

DC

org18 V

DC

Differential Input Voltage

g

36 V

DC

Input Voltage (Note 1)

b

0.3V toa36 V

DC

Output Short Circuit to VE(Note 2) Continuous

V

OUT

with Respect to V

E

V

E

b

7VsV

OUT

s

V

E

a

36V

ESD Tolerance (Note 10) 2000V

M Package N Package

Power Dissipation (Note 3) 500 mW 500 mW
T

j

Max 115§C 115§C

i

jA

115§C/W 90§C/W

Lead Temp.

(SolderingÐ10 sec.) 260

§

C

(Vapor PhaseÐ60 sec.) 215

§

C

(InfraredÐ15 sec.) 220

§

C

Operating Temp. Range LP365: 0

§

CsT

A

s

a

70§C

Storage Temp. Range

b

40§CsT

A

s

a

150§C

Electrical Characteristics (Note 4) Low power V

S

e

5V, I

SET

e

10 mA

LP365A LP365

Symbol Parameter Conditions

Tested Design Tested Design Units

Typ Limit Limit Typ Limit Limit (Limit)

(Note 5) (Note 6) (Note 5) (Note 6)

V

OS

Input Offset V

CM

e

OV,

13 636 9

mV

Voltage R

S

e

100 (Max)

I

OS

Input Offset V

CM

e

0V 2 20 50 425 75

nA

Current LP265

425 150

(Max)

I

B

Input Bias V

CM

e

0V 10 50 125 15 75 200

nA

Current LP265

15 75 300

(Max)

A

VOL

Large Signal R

L

e

100k

500 50 50 300 25 25

V/mV

Voltage Gain (Min)

V

CM

Input Common-

0 0 0 0

V
Mode Voltage (Max)
Range

3 3 3 3

V

(Min)

CMRR Common-Mode 0sV

CM

s

3V

85 75 70 80 75 70

dB

Rejection Ratio (Min)

PSRR Supply Voltage

g

2.5VsV

S

75 65 65 70 65

65 dB

Rejection Ratio

s

g

3.5V (Min)

I

S

Supply Current All Inputse0V,

215 250 300 225 275 300

mA

R

L

e %

(Max)

V

OH

Output Voltage V

C

e

5V,

V
High V

E

e

0V, 4.9 4.5 4.9 4.5

(Min)

R

L

e

100k

V

OL

Output Voltage V

E

e

0V

0.4

0.4

0.4 0.4

V
Low (Max)

I

SINK

Output Sink V

E

e

0V,

2.4 1.2 0.6 2.0 0.8 0.4

mA

Current V

O

e

0.4V (Min)

I

LEAK

Output Leakage V

C

e

5V,

2505000 2 100 5000

nA

Current V

E

e

0V (Max)

t

R

Response Time V

CC

e

5V,

V

E

e

0V,

R

L

e

5k, 4 4 ms

C

L

e

10 pF

(Note 7)

2

Electrical Characteristics (Continued) (Note 8) High power V

S

e

g

15V, I

SET

e

100 mA

LP365A LP365

Symbol Parameter Conditions

Tested Design Tested Design

Units

Typ Limit Limit Typ Limit Limit

(Limit)

(Note 5) (Note 6) (Note 5) (Note 6)

V

OS

Input Offset V

CM

e

0V,

13 636 9

mV

Voltage R

S

e

100 (Max)

I

OS

Input Offset V

CM

e

0V 5 50 100 10 90 200

nA

Current LP265

10 90 500

(Max)

I

B

Input Bias V

CM

e

0V 60 200 500 80 300 500

nA

Current LP265

80 300 800

(Max)

A

VOL

Large Signal R

L

e

15k

500 100 100 500 100 100

V/mV

Voltage Gain (Min)

V

CM

Input Common-

b

15

b

15

b

15

b

15

V
Mode Voltage (Max)
Range

13 13 13 13

V

(Min)

CMRR Common-Mode

b

15VsV

CM

85 75 70 80 75 70

dB

Rejection Ratio

s

13V (Min)

PSRR Supply Voltage

g

10VsV

S

80 70 70 75 70 70

dB

Rejection Ratio

s

g

15V (Min)

I

S

Supply Current All Inputse0V, 2.6 3 3.3 2.8 3.5 3.7

mA

R

L

e %

, LP265

2.8 3.5 4.3

(Max)

V

OH

Output Voltage V

C

e

5V,

V
High V

E

e

0V, 4.9 4.5 4.9 4.5

(Min)

R

L

e

100k

V

OL

Output Voltage V

E

e

0V

0.4 0.4 0.4 0.4

V
Low (Max)

I

SINK

Output Sink V

E

e

0V,

10 8 5.5 7.5 6 4

mA

Current V

O

e

0.4V (Min)

I

LEAK

Output Leakage V

C

e

15V,

5505000 5505000

nA

Current V

E

eb

15V (Max)

t

R

Response Time V

CC

e

5V,

V

E

e

0V,

R

L

e

5k, 1.0 1.0 ms

C

L

e

10 pF

(Note 7)

Note 1: The input voltage is not allowed to go 0.3V above Vaorb0.3V below Vbas this will turn on a parasitic transistor causing large currents to flow through
the device.

Note 2: Short circuits from the output to V

a

may cause excessive heating and eventual destruction. The current in the output leads and the VElead should not be

allowed to exceed 30 mA. The output should not be shorted to V

b

if V

E

s

(Vb)a7V.

Note 3: For operating at elevated temperatures, these devices must be derated based on a thermal resistance of i

jA

and Tjmax. T

j

e

T

A

a

ijAPD.

Note 4: Boldface numbers apply at temperature extremes. All other numbers apply at T

A

e

T

j

e

25§C. V

a

e

5V, V

b

e

0V, I

SET

e

10 mA, R

L

e

100k, and

V

C

e

5V as shown in the Typical Connection diagram.

Note 5: Guaranteed and 100% production tested.

Note 6: Guaranteed (but not 100% production tested) over the operating temperature and supply voltage ranges. These limits are not used to calculate out-going

quality levels.

Note 7: The response time specified is for a 100 mV input step with 5 mV overdrive.

Note 8: Boldface numbers apply at temperature extremes. All other numbers apply at T

A

e

T

j

e

25§C. V

a

ea

15V, V

b

eb

15V, I

SET

e

100 mA, R

L

e

100k, and

V

C

e

5V as shown in the Typical Connection diagram.

Note 9: See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ for other methods of soldering surface mount devices.

Note 10: Human body model, 1.5 kX in series with 100 pF.

3

Typical Performance Characteristics

Supply Current vs I

SET

Supply Current vs Supply
Voltage

Supply Current vs
Temperature

Input Bias Current vs I

SET

Output Saturation Voltage Voltage Gain vs I

SET

Response Time
Negative Transition

Response Time
Positive Transition

Response Time
Negative Transition

Response Time
Positive Transition

TL/H/5023– 3

4

Typical Applications

Gated 4-Phase Oscillator

TL/H/5023– 4

fe20 kHz

f

e

1

1.6#R

t

#

C

t

All four phases run when X is low. When X is high, oscillation stops and
power drain is zero.

‘‘Voting’’ Comparator

TL/H/5023– 5

If V

E

e

0.25V, then V

OUT

will be low if 1 of the 3 other outputs are low.

Choice of V

E

e

0.50V causes V

OUT

to be low if 2 of the 3 other outputs are

low; V

E

e

0.75V will cause V

OUT

to be low if all 3 other outputs are low.

5

Typical Applications (Continued)

Ordinary Hysteresis

TL/H/5023– 6

It is a good practice to add a few millivolts of positive feedback to prevent
oscillation when the input voltage is near the threshold.

Hysteresis from Emitter

TL/H/5023– 7

Positive feedback from the emitter can also prevent oscillations when VINis
near the threshold.

Bar-Graph Display

TL/H/5023– 8

The positive feedback from pin 16 provides hysteresis.

Level-Sensitive Strobe

TL/H/5023– 9

Comparators B, C, and D do not respond until activated by the signal applied
to comparator A.

6

Typical Applications (Continued)

Slow Op Amp (Inverter)

TL/H/5023– 10

R

B

e

Va/20 mA

Unlike most comparators, the LP365 can be used as an op amp, if suitable
R-C damping networks are used.

Slow Op Amp (Unity-Gain Follower)

TL/H/5023– 11

R

B

e

Va/20 mA

The LP365 can also be used as a high-input-impedance follower-amplifier
with the damping components shown.

Chopping Outputs

TL/H/5023– 12

Chopping the outputs by modulating the I

SET

current allows data to be trans-

mitted via opto-couplers, transformers, etc.

Low Battery Detector

TL/H/5023– 13

I

S

@

6Ve45 mA

I

S

@

3.8Ve1 mA

f

e

3 kHz

Comparator A detects when the supply voltage drops to 4V and enables
comparator B to drive a piezoelectric alarm.

7

Simplified Schematic

TL/H/5023– 14

Current sources are programmed by I

SET

VEis common to all 4 comparators

8

Physical Dimensions inches (millimeters)

Plastic Surface-Mount Package (M)

Order Number LP365M

NS Package Number M16A

9

LP265/LP365 Micropower Programmable Quad Comparator

Physical Dimensions inches (millimeters) (Continued)

Molded Dual-In-Line Package (N)

Order Number LP365AN or LP365N

NS Package Number N16A

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