A

1

A

2

A

3

40 kW

40 kW

40 kW

40 kW

V

IN

2

1

8

3

6

5

V

IN

R

G

V+

V-

Ref

V

O

G = 1 +

49.4 kW

R

G

+

4

7

INA129

Over-Voltage

Protection

Over-Voltage

Protection

24.7 kW

24.7 kW

-

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

INA129-EP

SBOS508A – DECEMBER 2009 – REVISED DECEMBER 2015

INA129-EP Precision, Low Power Instrumentation Amplifiers

1 Features

3 Description

The INA129-EP device is a low power, general-

1

•

Low Offset Voltage

purpose instrumentation amplifier offering excellent

•

Low Input Bias Current

accuracy. The versatile 3-op amp design and small

•

High CMR: 95 dB (Typical)

size make the device ideal for a wide range of

applications. Current-feedback input circuitry provides

•

Inputs Protected to ±40 V

wide bandwidth even at high gain (200 kHz at G =

•

Wide Supply Range: ±2.25 V to ±18 V

100).

•

Low Quiescent Current: 2 mA (Typical)

A single external resistor sets any gain from 1 to

10,000.

The

INA129-EP

provides

an

industry-

2 Applications

standard gain equation; the INA129-EP gain equation

•

Bridge Amplifier

is compatible with the AD620.

•

Thermocouple Amplifier

The INA129-EP device is laser trimmed for very low

•

RTD Sensor Amplifier

offset voltage, drift, and high common-mode rejection

(113 dB at G

≥ 100). It operates with power supplies

•

Medical Instrumentation

as low as ±2.25 V, and quiescent current is only 750

•

Data Acquisition

μA–ideal for battery operated systems. Internal input

•

Supports Extreme Temperature Applications:

protection can withstand up to ±40 V without damage.

–

Controlled Baseline

The INA129-EP is available in a 8-Pin SOIC surface-

–

One Assembly and Test Site

mount package specified for the –55°C to 125°C

temperature range.

–

One Fabrication Site

–

Available in Military (–55°C to +125°C)

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

Extended Product Life Cycle

INA129-EP

SOIC (8)

4.90 mm × 3.91 mm

–

Extended Product-Change Notification

(1) For all available packages, see the orderable addendum at

–

Product Traceability

the end of the data sheet.

(1)

Custom temperature ranges available

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.