A

1

A

2

A

3

7

50 kW

50 kW

50 kW

50 kW

8

5

4

3

2

1

-IN

+IN

R

G

V+

V-

Device

G = 5 +

80 kW

R

G

6

8 kW

8 kW

Load

V = G

(V

´

V

)

-

O

IN+

IN-

0.1 F

m

0.1 F

m

+

-

V

O

REF

R

(1)

S

R

(1)

S

INA827

www.ti.com

SBOS631 – JUNE 2012

Wide Supply Range, Rail-to-Rail Output

Instrumentation Amplifier with a Minimum Gain of 5

Check for Samples: INA827

1

FEATURES

DESCRIPTION

The INA827 is a low-cost instrumentation amplifier

23

•

Eliminates Errors from External Resistors at

(INA) that offers extremely low power consumption

Gain of 5

and operates over a very wide single- or dual-supply

•

Common-Mode Range Goes Below

range. The device is optimized for the lowest possible

Negative Supply

gain drift of only 1 ppm per degree Celsius in G = 5,

which requires no external resistor. However, a single

•

Input Protection: Up to ±40 V

external resistor sets any gain from 5 to 1000.

•

Rail-to-Rail Output

The

INA827

is

optimized

to

provide

excellent

•

Outstanding Precision:

common-mode rejection ratio (CMRR) of over 88 dB

–

Common-Mode Rejection: 88 dB, min

(G = 5) over frequencies up to 5 kHz. In G = 5,

–

Low Offset Voltage: 150 µV, max

CMRR exceeds 88 dB across the full input common-

mode range from the negative supply all the way up

–

Low Drift: 2.5 µV/°C, max

to 1 V of the positive supply. Using a rail-to-rail

–

Low Gain Drift: 1 ppm/°C, max (G = 5 V/V)

output, the INA827 is well-suited for low-voltage

–

Power-Supply Rejection:

operation from a 2.7 V single-supply as well as dual

100 dB, min (G = 5)

supplies up to ±18 V. Additional circuitry protects the

inputs against overvoltage of up to ±40 V beyond the

–

Noise: 17 nV/

√Hz, G = 1000 V/V

power supplies by limiting the input currents to a save

•

High Bandwidth:

level.

–

G = 5: 600 kHz

The INA827 is available in a small MSOP-8 package

–

G = 100: 150 kHz

and is specified for the –40°C to +125°C temperature

•

Supply Current: 200 µA, typ

range. For a similar instrumentation amplifier with a

gain range of 1 V/V to 1000 V/V, see the INA826.

•

Supply Range:

–

Single Supply: +2.7 V to +36 V

–

Dual Supply: ±1.35 V to ±18 V

•

Specified Temperature Range:

–40°C to +125°C

•

Package: MSOP-8

APPLICATIONS

•

Industrial Process Controls

•

Multichannel Systems

•

Power Automation

•

Weigh Scales

•

Medical Instrumentation

•

Data Acquisition

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PhotoMOS is a registered trademark of Panasonic Electric Works Europe AG.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.