Philips LM111, LM211, LM311, LM311B DATA SHEET

Philips Semiconductors Linear Products Product specification

LM111/211/311/

LM311B

Voltage comparator

273

August 31, 1994 853-0927 13721

DESCRIPTION

The LM111 series are voltage comparators that have input currents
approximately a hundred times lower than devices like the µA710.
They are designed to operate over a wider range of supply voltages;
from standard ±15V op amp supplies down to a single 3V supply.
Their output is compatible with RTL, DTL, and TTL as well as MOS
circuits. Further, they can drive lamps or relays, switching voltages
up to 50V at currents as high as 50mA.

Both the inputs and the outputs of the LM111 series can be isolated
from system ground, and the output can drive loads referred to
ground, the positive supply, or the negative supply. Offset balancing
and strobe capability are provided and outputs can be wire-ORed.

Although slower than the µA710 (200ns response time vs 40ns), the
devices are also much less prone to spurious oscillations. The LM111
series has the same pin configuration as the µA710 series.

FEATURES

•Operates from single 3V supply (LM311B)

•Maximum input bias current: 150nA (LM311—250nA)

•Maximum offset current: 20nA (LM311—50nA)

•Differential input voltage range: ±30V

•Power consumption: 135mW at ±15V

•High sensitivity—200V/mV

•Zero crossing detector

PIN CONFIGURATION

1

2

3

4 5

6

7

8

D, FE, N PACKAGES

GND

INPUT

INPUT

V–

V+

OUTPUT

BAL/STROBE

BALANCE

+
–

APPLICATIONS

•Precision squarer

•Positive/negative peak detector

•Low voltage adjustable reference supply

•Switching power amplifier

ORDERING INFORMATION

DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #

8-Pin Plastic Dual In-Line Package (DIP) -55°C to +125°C LM111N 0404B
8-Pin Plastic Dual In-Line Package (DIP) -25°C to +85°C LM211N 0404B
8-Pin Plastic Small Outline Package (SO) 0 to +70°C LM311D 0174C
8-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C LM311N 0404B
8-Pin Plastic Small Outline Package (SO) -25°C to +85°C LM211D 0174C
8-Pin Ceramic Dual In-Line Package (CERDIP) -55°C to +125°C LM111FE 0580A
8-Pin Plastic Small Outline Package (SO) 0 to +70°C LM311BD 0174C
8-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C LM311BN 0404B

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Philips Semiconductors Linear Products Product specification

LM111/211/311/

LM311B

Voltage comparator

August 31, 1994

274

EQUIVALENT SCHEMATIC

BALANCE/

STROBE

BALANCE

R3
300R11.3KR4300R21.3K

Q8

R5
70

Q5

R6

1.2KR71.2K

Q7

Q3

R8
750

Q10

R9
600

Q11

Q20

Q19

Q8

Q9

Q18

R10
4K

Q13

Q12

Q14

OUTPUT

V+

Q15

R11
130

R12
600

R13
4

Q18

V–

Q17

R15
450

R15
400

R14
2K

R17
60

Q22

R18
200

Q4

Q2

Q23

R19
250

Q2

D15VD2

5V

Q1

INPUTS

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNIT

V

S

Total supply voltage 36 V
Output to negative supply voltage:

LM111/LM211 50 V

LM311/LM311B 40 V
Ground to negative supply voltage 30 V
Differential input voltage ±30 V

V

IN

Input voltage

1

±15 V

P

D MAX

Maximum power dissipation,
TA=25°C (still-air)

2

F package 810 mW

N package 1190 mW

D package 780 mW

I Output short-circuit duration 10 sec
T

A

Operating ambient temperature range

LM111 -55 to +125 °C

LM211 -25 to +85 °C

LM311/LM311B 0 to +70 °C

T

STG

Storage temperature range -65 to +150 °C

T

SOLD

Lead soldering temperature
(10sec max)

300 °C

NOTES:

1. This rating applies for ±15V supplies. The positive input voltage limit is 30V above the negative supply. The negative input voltage limit is
equal to the negative supply voltage or 30V below the positive supply, whichever is less.

2. Derate above 25°C, at the following rates: F package at 6.4mW/°C; N package at 9.5mW/°C; D package at 6.2m/W°C

Philips Semiconductors Linear Products Product specification

LM111/211/311/

LM311B

Voltage comparator

August 31, 1994

275

DC ELECTRICAL CHARACTERISTICS

1, 2, 3, 6

Over temperature range unless otherwise specified.

LM111/LM211 LM311 LM311B

SYMBOL

PARAMETER

TEST CONDITIONS

Min Typ Max Min Typ Max Min Typ Max

UNIT

V

OS

Input offset voltage

3

TA=25°C, RS≤50kΩ 0.7 3.0 2.0 7.5 2.0 7.5 mV

I

OS

Input offset current

3

TA=25°C 4.0 10 6.0 50 6 25 nA

I

BIAS

Input bias current TA=25°C 60 100 100 250 100 200 nA

A

V

Voltage gain TA=25°C 200 200 200 V/mV
Response time

4

TA=25°C 200 200 500 ns

V

SAT

Saturation voltage

LM111/211 VIN≤-5mV,

I

OUT

=50mA

LM311/B V

IN

≤-10mV,

I

OUT

=50mA

T

A

=25°C

0.75 1.5 0.75 1.5 0.75 1.5 V

I

BAL/STR

Strobe on current TA=25°C 3.0 3.0 3.0 mA

I

LEAKAGE

Output leakage current

6

LM111/211 VIN≥5mV,

V

OUT

=35V

LM311/B V

IN

≥10mV,

V

OUT

=35V

T

A

=25°C,

I

STROBE

=3mA

(V– = V

GND

= –5V)

0.2 10 0.2 50 0.2 50 nA

V

OS

Input offset voltage

3

RS≤50kΩ 4.0 10 10 mV

I

OS

Input offset current

3

20 70 50 nA

I

BIAS

Input bias current 150 300 250 nA

V

IN

Input voltage range

V=±15V (Pin 7 may go

to 5V)

-14.5

13.8
to

-14.7

13.0 -14.5

13.8
to

-14.7

13.0

V–

+0.5

V+

–1.5

V

V

OL

Saturation voltage

6

V+ ≥ 4.5V, V- = 0

LM111/211 V

IN

≤-6mV,

I

SINK

≤8mA

LM311/B V

IN

≤-10mV,

I

SINK

≤8mA

0.23 0.4 0.23 0.4 0.23 0.4 V

I

OH

Output leakage current VIN≥5mV, V

OUT

=35V 0.1 0.5 µA

I

CC

Positive supply current TA=25°C 5.1 6.0 5.1 7.5 1.6 3.5 mA

I

EE

Negative supply voltage TA=25°C 4.1 5.0 4.1 5.0 mA

NOTES:

1. This rating applies for ±15V supplies. The positive input voltage limit is 30V above the negative supply. The negative input voltage limit is
equal to the negative supply voltage or 30V below the positive supply, whichever is less.

2. These specifications apply for V

S

=±15V and 0°C < T

A

< 70°C unless otherwise specified. With the LM21 1, however, all temperature

specifications are limited to -25°C ≤ T

A

≤ 85°C and for the LM111 is limited to -55°C T

A

< 125°C. The offset voltage, offset current, and bias

current specifications apply for any supply voltage from a single 5V supply up to ±15V supplies.

3. The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with 1mA
load. Thus, these parameters define an error band and take into account the worst case effects of voltage gain and input impedance.

4. The response time specified is for a 100mV input step with 5mV over-drive.

5. Do not short the strobe pin to ground; it should be current driven at 3mA to 5mA.

6. LM311B, all parameters are at V+ = 3V ±10%, V– = GND = 0V.

Philips Semiconductors Linear Products Product specification

LM111/211/311/

LM311B

Voltage comparator

August 31, 1994

276

TYPICAL APPLICATIONS

INPUT

R1
3K

BAL

R2
3K

V+ = 5V

TO
MOS

LOGIC
R3
10K

V– = 10V

5

6

8

7

1

4

3

2

INPUT

+

–

LM311

+

–

LM311

V+ 5V

R3
2K

TTL
OUTPUT

8

7

3

2

4

1

R1

4.5K

R2
1K

MAGNETIC

PICKUP

+

–

LM311

V+ = 5V

TO TTL
OUTPUT

2

3

8

7

1

4
R4
82K

R2
47K

C1

R1
240K

R3
82K

R5
1K

Zero Detector

Driving MOS Logic

Detector for Magnetic

Transducer

TTL Interface with High

Level Logic

* Values shown are for a 0 to 30V logic swing and a 15V threshold.

** May be added to control speed and reduce susceptibility to noise spikes.