10

LT1097

OUT

LT1097•F03

5

0.01

µF

3

IN

2

6

50pF

10k

5k

+

–

LT1097

15V

–15V

*RESISTORS MUST HAVE LOW

THERMOELECTRIC POTENTIAL

LT1097•F04

4

3

2

7

6

50k*

100

Ω*

50k*

+

–

LT1097

Pulse Response of Feedforward

Compensation

Test Circuit for Offset Voltage and

its Drift with Temperature

Follower Feedforward

Compensation

5

µs/DIV

1097 G20

The availability of the compensation terminal permits the use

of feedforward frequency compensation to enhance slew

rate. The voltage follower feedforward scheme bypasses the

amplifier’s gain stages and slews at nearly 10V/

µs.

The inputs of the LT1097 are protected with back-to-back

diodes. In the voltage follower configuration, when the

input is driven by a fast, large signal pulse (>1V), the input

protection diodes effectively short the output to the input

during slewing, and a current, limited only by the output

short circuit protection will flow through the diodes.

The use of a feedback resistor, as shown in the voltage

follower feedforward diagram, is recommended because

this resistor keeps the current below the short circuit limit,

resulting in faster recovery and settling of the output.

–5V

OUT

2N3904

620k

LT1097•TA02

4

3

2

1

7

5V

6

1k

330k

100k

10k

10k

–IN

+IN

+

–

LT1097

100k

Low Power Comparator with <10

µV Hysteresis

TYPICAL APPLICATIO