Burr Brown INA2141PA, INA2141P, INA2141UA, INA2141U Datasheet

®

INA2141

INA2141

Dual, Low Power, G = 10, 100

INSTRUMENTATION AMPLIFIER

INA2141

FEATURES

● LOW OFFSET VOLTAGE: 50µV max

● LOW DRIFT: 0.5

µV/°C max

● EXCELLENT GAIN ACCURACY:

±0.05% max at G = 10

● LOW INPUT BIAS CURRENT: 5nA max

● HIGH CMR: 117dB min (G = 100)

● INPUTS PROTECTED TO

● WIDE SUPPLY RANGE:

● LOW QUIESCENT CURRENT: 750

● 16-PIN PLASTIC DIP, SOL-16

±40V

±2.25V to ±18V

µA/IA

APPLICATIONS

● SENSOR AMPLIFIER

THERMOCOUPLE, RTD, BRIDGE

● MEDICAL INSTRUMENTATION

● MULTIPLE CHANNEL SYSTEMS

–

1

+

–

+

3

4

2

16

14

13

15

Over-Voltage

Protection

252Ω

5050Ω

252Ω

Over-Voltage

Protection

Over-Voltage

Protection

252Ω

5050Ω

252Ω

Over-Voltage

Protection

V

G = 10

or

100

V

V

G = 10

or

100

V

INA

INA

INB

INB

DESCRIPTION

The INA2141 is a low power, dual instrumentation
amplifier offering excellent accuracy. Its versatile
3-op amp design and small size make it ideal for a
wide range of applications. Current-feedback input
circuitry provides wide bandwidth even at high gain
(200kHz at G = 100).

Simple pin connections set an accurate gain of 10 or
100V/V without external resistors. Internal input pro­tection can withstand up to ±40V without damage.

The INA2141 is laser trimmed for very low offset
voltage (50µV), drift (0.5µV/°C) and high common­mode rejection (117dB at G = 100). It operates with
power supplies as low as ±2.25V, and quiescent cur­rent is only 750µA per amplifier—ideal for battery
operated systems.

Packages are 16-pin plastic DIP, and SOL-16
surface-mount, specified for the –40°C to +85°C
temperature range.

V+

9

A

A

A

A

1A

25kΩ

25kΩ

2A

1B

25kΩ

25kΩ

2B

V–

INA2141

8

40kΩ40kΩ

A

3A

40kΩ40kΩ

40kΩ40kΩ

A

3B

40kΩ40kΩ

7

6

V

OA

5

Ref

10

V

OB

11

12

Ref

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111

Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©1995 Burr-Brown Corporation PDS-1244C Printed in U.S.A. January, 1996

SPECIFICATIONS

At TA = +25°C, VS = ±15V, and RL = 10kΩ, unless otherwise noted.

INA2141P, U INA2141PA, UA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
INPUT

Offset Voltage, RTI G = 100 ±20 ±50 ✻ ±125 µV

vs Temperature G = 100 ±0.2 ±0.5 ✻ ±1.5 µV/°C
vs Power Supply
Long-Term Stability G = 100 0.2 ✻ µV/mo

Impedance, Differential 10

Common-Mode 10

Common-Mode Voltage Range
Safe Input Voltage ±40 ✻ V

Common-Mode Rejection V

BIAS CURRENT ±2 ±5 ✻ ±10 nA

vs Temperature ±30 ✻ pA/°C

Offset Current ±1 ±5 ✻ ±10 nA

vs Temperature ±30 ✻ pA/°C

NOISE VOLTAGE, RTI

f = 10Hz G = 100, R
f = 100Hz 8 ✻ nV/√Hz
f = 1kHz 8 ✻ nV/√Hz

= 0.1Hz to 10Hz 0.2 ✻ µVp-p

f

B

f = 10Hz G = 10, R
f = 100Hz 13 ✻ nV/√Hz
f = 1kHz 12 ✻ nV/√Hz

= 0.1Hz to 10Hz 0.6 ✻ µVp-p

f

B

Noise Current

f = 10Hz 0.9 ✻ pA/√Hz
f = 1kHz 0.3 ✻ pA/√Hz

= 0.1Hz to 10Hz 30 ✻ pAp-p

f

B

GAIN

Gain Error V
Gain vs Temperature

Nonlinearity G = 100 ±0.0005 ±0.002 ✻ ±0.004 % of FSR

OUTPUT

Voltage: Positive R

Negative R
Load Capacitance Stability 1000 ✻ pF
Short-Circuit Current +6/–15 ✻ mA

FREQUENCY RESPONSE

Bandwidth, –3dB G = 100 200 ✻ kHz
Slew Rate V

Settling Time, 0.01% V

(2)

Overload Recovery 50% Overdrive 4 ✻ µs

POWER SUPPLY

Voltage Range ±2.25 ±15 ±18 ✻✻ ✻V
Current, Total V

TEMPERATURE RANGE

Specification –40 85 ✻✻°C
Operating –40 125 ✻✻°C

θ

JA

✻ Specification same as INA2141P, U.
NOTE: (1) Input common-mode range varies with output voltage—see typical curves. (2) Guaranteed by wafer test.

G = 10 ±50 ±100 ✻ ±250 µV

(2)

G = 10

VS = ±2.25 to ±18V, G = 100

G = 10 ±2 ±10 ✻ ±20 µV/V
G = 10 0.5 ✻ µV/mo

(1)

VO = 0V (V+) – 2 (V+) – 1.4 ✻✻ V

= ±13V, ∆RS = 1kΩ

CM

G = 100 117 125 110 120 dB

G = 10 97 106 93 100 dB

= 0Ω 10 ✻ nV/√Hz

S

= 0Ω 22 ✻ nV/√Hz

S

= ±13.6V, G = 100 ±0.03 ±0.075 ✻ ±0.15 %

O

G = 10 ±0.01 ±0.05 ✻ ±0.15 %

G = 10, 100 ±2 ±10 ✻✻ppm/°C

+ 2 (V–) + 1.7 ✻✻ V

(V–)

±0.5 ±2 ✻ ±5 µV/°C

±1 ±2 ✻ ±5 µV/V

10

|| 2 ✻ Ω || pF

10

|| 9 ✻ Ω || pF

G = 10 ±0.0003 ±0.001 ✻ ±0.002 % of FSR

= 10kΩ (V+) – 1.4 (V+) – 0.9 ✻✻ V

L

= 10kΩ (V–) + 1.4 (V–) + 0.9 ✻✻ V

L

G = 10 1 ✻ MHz

= ±10V, G = 10 4 ✻ V/µs

O

= ±5V, G = 100 9 ✻ µs

O

G = 10 7 ✻ µs

= 0V ±1.5 ±1.6 ✻✻mA

IN

80 ✻ °C/W

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

®

INA2141

2

PIN CONFIGURATION

ELECTROSTATIC

Top View DIP

V
V

Ref

V

Sense

–
INA

+
INA

OA

V–

1
2
3

J

A

4

J

A

5

A

6
7

A

8

–

16

V

INB
+

15

V

INB

14

J

B

13

J

B

12

Ref

11

V

OB

10

Sense

9

V+

SOL-16

B

B

ABSOLUTE MAXIMUM RATINGS

Supply Voltage .................................................................................. ±18V

Analog Input Voltage Range ............................................................. ±40V

Output Short-Circuit (to ground) .............................................. Continuous

Operating Temperature ................................................. –40°C to +125°C

Storage Temperature ..................................................... –40°C to +125°C

Junction Temperature.................................................................... +150°C

Lead Temperature (soldering, 10s)............................................... +300°C

DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.

ORDERING INFORMATION

PACKAGE
DRAWING TEMPERATURE

PRODUCT PACKAGE NUMBER

INA2141PA 16-Pin Plastic DIP 180 –40°C to +85°C
INA2141P 16-Pin Plastic DIP 180 –40°C to +85°C
INA2141UA SOL-16 Surface-Mount 211 –40°C to +85°C
INA2141U SOL-16 Surface-Mount 211 –40°C to +85°C

NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.

(1)

RANGE

®

3

INA2141