FN7490 Rev 8.00

Page 1 of 14

August 11, 2015

FN7490

Rev 8.00

August 11, 2015

EL8170, EL8173

Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifiers

DATASHEET

The EL8170 and EL8173 are micropower instrumentation

amplifiers optimized for single supply operation over the

+2.4V to +5.5V range. Inputs and outputs can operate

rail-to-rail. As with all instrumentation amplifiers, a pair of

inputs provide very high common-mode rejection and are

completely independent from a pair of feedback terminals.

The feedback terminals allow zero input to be translated to any

output offset, including ground. A feedback divider controls the

overall gain of the amplifier.

The EL8170 is compensated for a gain of 100 or more, and the

EL8173 is compensated for a gain of 10 or more. The EL8170

and EL8173 have bipolar input devices for best offset and

1/f noise performance.

The amplifiers can be operated from one lithium cell or two

Ni-Cd batteries. The EL8170 and EL8173 input range includes

ground to slightly above positive rail. The output stage swings

to ground and positive supply (no pull-up or pull-down resistors

are needed).

Pin Configurations

EL8170

(8 LD SOIC)

TOP VIEW

EL8173

(8 LD SOIC)

TOP VIEW

Features

• 95µA maximum supply current

• Maximum offset voltage

- 200µV (EL8170)

- 1000µV (EL8173)

• Maximum 3nA input bias current

• 396kHz -3dB bandwidth (G = 10)

• 192kHz -3dB bandwidth (G = 100)

• Single supply operation

- Input voltage range is rail-to-rail

- Output swings rail-to-rail

• Pb-Free (RoHS Compliant)

Applications

• Battery- or Solar-Powered Systems

•Strain Gauges

• Current Monitors

• Thermocouple Amplifiers

1

2

3

4

8

7

6

5



+

-

+

-

DNC

IN-

IN+

V-

FB+

V+

FB-

VOUT

1

2

3

4

8

7

6

5



+

-

+

-

DNC

IN-

IN+

V-

FB+

V+

FB-

VOUT

Ordering Information

PART NUMBER

(Notes 2, 3)

PART

MARKING

PACKAGE

(RoHS Compliant)

PKG.

DWG. #

EL8170FSZ (Note 1)

8170FSZ

8 Ld SOIC

M8.15E

EL8173FSZ (Note 1)

(No longer available

or supported)

8173FSZ

8 Ld SOIC

M8.15E

EL8170FWZ-EVAL

Evaluation Board

EL8173EV1Z (No

longer available or

supported)

Evaluation Board

EL8173FWZ-EVAL

(No longer available or

supported)

Evaluation Board

NOTES:

1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on

reel specifications.

2. These Intersil Pb-free plastic packaged products employ special

Pb-free material sets, molding compounds/die attach materials, and

100% matte tin plate plus anneal (e3 termination finish, which is

RoHS compliant and compatible with both SnPb and Pb-free

soldering operations). Intersil Pb-free products are MSL classified at

Pb-free peak reflow temperatures that meet or exceed the Pb-free

requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), please see device information

page for EL8170, EL8173 For more information on MSL, please see

tech brief TB363.