INA117 High Common-Mode Voltage Difference Amplifier

1 Features

• Common-mode input range: ±200V (VS = ±15V)

• Protected inputs:

– ±500V Common-mode

– ±500V Differential

• Unity gain: 0.05% gain error maximum

• Nonlinearity: 0.001% maximum

• CMRR: 70dB minimum

2 Applications

• Single multi axis servo drives

• Industrial machine and machine tools

• Semiconductor test and ATE

• Ultrasound scanner

3 Description

The INA117 is a precision unity-gain difference

amplifier with very high common-mode input voltage

range. The INA117 is a single monolithic IC consisting

of a precision op amp and integrated thin-film resistor

network. The device can accurately measure small

differential voltages in the presence of common-

mode signals up to ±200V. The INA117 inputs

are protected from momentary common-mode or

differential overloads up to ±500V.

In many applications, where galvanic isolation is not

essential, the INA117 can replace isolation amplifiers.

This design can eliminate costly isolated input-side

power supplies and the associated ripple, noise,

and quiescent current. The 0.001% nonlinearity and

200kHz bandwidth of the INA117 is superior to those

of conventional isolation amplifiers.

The INA117 is available in 8-pin plastic mini-DIP

and SO-8 surface-mount packages, specified for the

–40°C to 85°C temperature range.

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

INA117P

P (DIP, 8)

6.35mm × 9.81mm

INA117KU

D (SOIC, 8)

3.91mm × 4.9mm

INA117KU/2K5

(1)

For more information, see Section 10.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

6

8

3

1

2

7

NC

V+

VOUT

REF

B

–IN

+IN

4

5

+

20k

380k

380k

380k

19k

REF

A

V–

–

INA117 D Package Top View

INA117

SBOS154B – SEPTEMBER 2000 – REVISED APRIL 2024

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.