Fast-Settling FET-Input

INSTRUMENTATION AMPLIFIER

APPLICATIONS

q MULTIPLEXED INPUT DATA

ACQUISITION SYSTEM

q FAST DIFFERENTIAL PULSE AMPLIFIER

q HIGH SPEED GAIN BLOCK

q AMPLIFICATION OF HIGH IMPEDANCE

SOURCES

DESCRIPTION

The INA110 is a versatile monolithic FET-input

instrumentation amplifier. Its current-feedback circuit topol-

ogy

and

laser

trimmed

input

stage

provide

excellent dynamic performance and accuracy. The INA110

settles in 4

µs to 0.01%, making it ideal for high speed or

multiplexed-input data acquisition systems.

Internal gain-set resistors are provided for gains of 1, 10,

100, 200, and 500V/V. Inputs are protected for differential

and common-mode voltages up to

±V

CC. Its very high input

impedance and low input bias current make the INA110 ideal

for applications requiring input filters or input protection

circuitry.

The INA110 is available in 16-pin plastic and ceramic DIPs,

and in the SOL-16 surface-mount package. Military, indus-

trial and commercial temperature range grades are available.

A

1

1

404

Ω

4.44k

Ω

201

Ω

80.2

Ω

A

2

20k

Ω

10k

Ω

10k

Ω

20k

Ω

A

3

10k

Ω

10k

Ω

13

12

16

11

3

2

4

5

8

7

14

15

9

6

10

–In

X 10

X 100

X 200

X 500

R

G

+In

(1)

Output

Ref

Sense

+V

CC

–V

CC

Input

Offset

Adjust

Output

Offset

Adjust

FET

Input

FET

Input

INA110

NOTE: (1) Connect to R

G for desired gain.

FEATURES

q LOW BIAS CURRENT: 50pA max

q FAST SETTLING: 4

µs to 0.01%

q HIGH CMR: 106dB min; 90dB at 10kHz

q INTERNAL GAINS: 1, 10, 100, 200, 500

q VERY LOW GAIN DRIFT: 10 to 50ppm/

°C

q LOW OFFSET DRIFT: 2

µV/°C

q LOW COST

q PINOUT SIMILAR TO AD524 AND AD624

INA110

SBOS147A – SEPTEMBER 1986 – JULY 2005

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 1986-2005, Texas Instruments Incorporated

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.

All trademarks are the property of their respective owners.

INA1

10

INA110