LM331 datasheet(5/23 Pages) TI1

5 / 23 page

LM231, LM331

www.ti.com

SNOSBI2C – JUNE 1999 – REVISED SEPTEMBER 2015

7.3 Recommended Operating Conditions

MIN

MAX

UNIT

LM231, LM231A

−25

°C

Operating Ambient

Temperature

LM331, LM331A

°C

Supply Voltage, VS

(1)

All voltages are measured with respect to GND = 0 V, unless otherwise noted.

7.4 Thermal Information

LM312, LM331

THERMAL METRIC(1)

P (PDIP)

UNIT

8 PINS

RθJA

Junction-to-ambient thermal resistance

100

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

7.5 Electrical Characteristics

All specifications apply in the circuit of Figure 16, with 4.0 V

≤ VS ≤ 40 V, TA = 25°C, unless otherwise specified.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

% Full-

4.5 V

≤ VS ≤ 20 V

±0.003

±0.01

Scale

VFC Non-Linearity (1)

% Full-

TMIN ≤ TA ≤ TMAX

±0.006

±0.02

Scale

%Full-

VFC Non-Linearity in Circuit of Figure 14

VS = 15 V, f = 10 Hz to 11 kHz

±0.024

±0.14

Scale

LM231, LM231A

VIN = −10 V, RS = 14 kΩ

0.95

1.05

kHz/V

Conversion Accuracy

Scale Factor (Gain)

LM331, LM331A

0.9

1.1

kHz/V

TMIN ≤ TA ≤ TMAX

LMx31

±30

±150

ppm/°C

Temperature Stability

4.5 V

≤ VS ≤ 20 V

of Gain

LMx31A

±20

±50

ppm/°C

4.5 V

≤ VS ≤ 10 V

0.01

0.1

%/V

Change of Gain with VS

10 V

≤ VS ≤ 40 V

0.006

0.06

%/V

Rated Full-Scale Frequency

VIN = −10 V

10.0

kHz

% Full-

Gain Stability vs. Time (1000 Hours)

TMIN ≤ TA ≤ TMAX

±0.02

Scale

Over Range (Beyond Full-Scale) Frequency

VIN = −11 V

10%

INPUT COMPARATOR

Offset Voltage

±3

±10

LM231/LM331

TMIN ≤ TA ≤ TMAX

±4

±14

LM231A/LM331A

TMIN ≤ TA ≤ TMAX

±3

±10

Bias Current

−80

−300

Offset Current

±8

±100

Common-Mode Range

TMIN ≤ TA ≤ TMAX

−0.2

VCC − 2

TIMER

Timer Threshold Voltage, Pin 5

0.63 × VS

0.667 × VS

0.7 × VS

Input Bias Current, Pin 5

VS = 15 V

All Devices

≤ VPIN 5 ≤ 9.9 V

±10

±100

LM231/LM331

VPIN 5 = 10 V

200

1000

LM231A/LM331A

VPIN 5 = 10 V

200

500

VSAT PIN 5 (Reset)

I = 5 mA

0.22

0.5

(1)

Non-linearity is defined as the deviation of fOUT from VIN × (10 kHz/−10 VDC) when the circuit has been trimmed for zero error at 10 Hz

and at 10 kHz, over the frequency range 1 Hz to 11 kHz. For the timing capacitor, CT, use NPO ceramic, Teflon

®, or polystyrene.

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