Burr Brown INA141UA, INA141U-2K5, INA141U, INA141PA, INA141P Datasheet

®

INA141

1

INA141

INA141

Precision, Low Power, G = 10, 100

INSTRUMENT ATION AMPLIFIER

®

FEA TURES

● LOW OFFSET VOLTAGE: 50µV max

● LOW DRIFT: 0.5

µV/°C max

● ACCURATE GAIN:

±0.05% at G = 10

● LOW INPUT BIAS CURRENT: 5nA max

● HIGH CMR: 117dB min

● INPUTS PROTECTED TO

±40V

● WIDE SUPPLY RANGE:

±2.25 to ± 18V

● LOW QUIESCENT CURRENT: 750

µA

● 8-PIN PLASTIC DIP, SO-8

DESCRIPTION

The INA141 is a low power, general purpose 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 INA141 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—ideal for battery operated
systems.

The INA141 is available in 8-pin plastic DIP, and
SO-8 surface-mount packages, specified for the –40°C
to +85°C temperature range.

INA141

A

1

A

2

A

3

40kΩ40kΩ

40kΩ40kΩ

V

IN

2

1

8

3

6

5

V

IN

V+

V–

INA141

Ref

V

O

–

+

Over-Voltage

Protection

25kΩ

25kΩ

Over-Voltage

Protection

4

7

G = 10

or

G =100

252Ω

5050Ω

252Ω

APPLICATIONS

● BRIDGE AMPLIFIER

● THERMOCOUPLE AMPLIFIER

● RTD SENSOR AMPLIFIER

● MEDICAL INSTRUMENTATION

● DATA ACQUISITION

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]

PDS-1297B

®

INA141

2

SPECIFICATIONS

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

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.

INA141P, U INA141PA, UA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
INPUT

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

G = 10 ±50 ±100 ✻ ±250 µV

vs Temperature G = 100 ±0.2 ±0.5 ✻ ±1.5 µV/°C

G = 10

(2)

±0.5 ±2 ✻ ±2.5 µV/°C

vs Power Supply

VS = ±2.25 to ±18V, G = 100

±0.4 ±1 ✻ ±3 µV/V

G = 10 ±2 ±10 ✻ ±20 µV/V

Long-Term Stability G = 100 0.2 ✻ µV/mo

G = 10 0.5 ✻ µV/mo

Impedance, Differential 10

10

|| 2 ✻ Ω || pF

Common-Mode 10

10

|| 9 ✻ Ω || pF

Common-Mode Voltage Range

(1)

VO = 0V (V+) – 2 (V+) – 1.4 ✻✻ V

(V–)

+ 2 (V–) + 1.7 ✻✻ V
Safe Input Voltage ±40 ✻ V
Common-Mode Rejection V

CM

= ±13V, ∆RS = 1kΩ

G = 100 117 125 110 120 dB

G = 10 100 106 93 100 dB

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

S

= 0Ω 10 ✻ nV/√Hz
f = 100Hz 8 ✻ nV/√Hz
f = 1kHz 8 ✻ nV/√Hz
f

B

= 0.1Hz to 10Hz 0.2 ✻ µVp-p

f = 10Hz G = 10, R

S

= 0Ω 22 ✻ nV/√Hz
f = 100Hz 13 ✻ nV/√Hz
f = 1kHz 12 ✻ nV/√Hz
f

B

= 0.1Hz to 10Hz 0.6 ✻ µVp-p

Noise Current

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

B

= 0.1Hz to 10Hz 30 ✻ pAp-p

GAIN

Gain Error V

O

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

G = 10 ±0.01 ±0.05 ✻ ±0.15 %

Gain vs Temperature

(2)

G = 10, 100 ±2 ±10 ✻✻ppm/°C

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

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

OUTPUT

Voltage: Positive R

L

= 10kΩ (V+) – 1.4 (V+) – 0.9 ✻✻ V

Negative R

L

= 10kΩ (V–) + 1.4 (V–) + 0.9 ✻✻ V
Load Capacitance Stability 1000 ✻ pF
Short-Circuit Current +6/–15 ✻ mA

FREQUENCY RESPONSE

Bandwidth, –3dB G = 100 200 ✻ kHz

G = 10 1 ✻ MHz

Slew Rate V

O

= ±10V, G = 10 4 ✻ V/µs

Settling Time, 0.01% V

O

= ±5V, G = 100 9 ✻ µs

G = 10 7 ✻ µs

Overload Recovery 50% Overdrive 4 ✻ µs

POWER SUPPLY

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

IN

= 0V ±750 ±800 ✻✻µA

TEMPERATURE RANGE

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

θ

JA

8-Pin DIP 80 ✻ °C/W

SO-8 SOIC 150 ✻ °C/W

✻ Specification same as INA141P, U.
NOTE: (1) Input common-mode range varies with output voltage—see typical curves. (2) Guaranteed by wafer test.

®

INA141

3

J

V

–

IN

V

+

IN

V–

J
V+
V

O

Ref

1
2
3
4

8
7
6
5

Top View

PIN CONFIGURATION

8-Pin DIP and SO-8

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

ABSOLUTE MAXIMUM RATINGS

ELECTROSTATIC
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

(1)

RANGE

INA141PA 8-Pin Plastic DIP 006 –40°C to +85°C
INA141P 8-Pin Plastic DIP 006 –40°C to +85°C
INA141UA SO-8 Surface-Mount 182 –40°C to +85°C
INA141U SO-8 Surface-Mount 182 –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.