1

®

HA-2620, HA-2625

100MHz, High Input Impedance, Very

Wideband, Uncompensated Operational

Amplifiers

HA-2620/2625 are bipolar operational amplifiers that feature

very high input impedance (500M

Ω, HA-2620) coupled with

wideband AC performance. The high resistance of the input

stage is complemented by low offset voltage (0.5mV,

HA-2620) and low bias and offset current (1nA, HA-2620) to

facilitate accurate signal processing. Input offset can be

reduced further by means of an external nulling

potentiometer. The 100MHz gain bandwidth product

(HA-2620/2625 are stable for closed loop gains greater than

5), 35V/

µs slew rate and 150kV/V open loop gain enables

HA-2620/2625 to perform high gain amplification of very fast,

wideband signals. These dynamic characteristics, coupled

with fast settling times, make these amplifiers ideally suited

to pulse amplification designs as well as high frequency

(e.g., video) applications. The frequency response of the

amplifier can be tailored to exact design requirements by

means of an external bandwidth control capacitor connected

from the Comp pin to GND.

In addition to its application in pulse and video amplifier

designs, HA-2620/2625 is particularly suited to other high

performance designs such as high-gain low distortion audio

amplifiers, high-Q and wideband active filters and high-

speed comparators. For more information, please refer to

Application Notes AN509, AN519 and AN546.

Ordering Information

Features

• High Input Impedance . . . . . . . . . . . . . . . . . . . . . 300M

Ω

• Low Input Bias Current. . . . . . . . . . . . . . . . . . . . . . . . 5nA

• Low Input Offset Current . . . . . . . . . . . . . . . . . . . . . . 5nA

• Low Input Offset Voltage . . . . . . . . . . . . . . . . . . . . . . 3mV

• High Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150kV/V

• Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V/

µs

• Output Short Circuit Protection

• Compensation Pin for Unity Gain Capability

Applications

• Video and RF Amplifier

• Pulse Amplifier

• Audio Amplifiers and Filters

• High-Q Active Filters

• High Speed Comparators

• Low Distortion Oscillator

Pinouts

HA-2625 (PDIP, SOIC)

TOP VIEW

HA-2620 (METAL CAN)

TOP VIEW

PART

NUMBER

PART

MARKING

TEMP.

RANGE

PACKAGE

PKG.

DWG. #

HA2-2620-2

HA2-2620-2

-55 to 125 8 Pin Metal Can T8.C

HA3-2625-5

HA3-2625-5

0 to 75

8 Ld PDIP

E8.3

HA9P2625-9

26259

-40 to 85

8 Ld SOIC

M8.15

1

2

3

4

8

7

6

5

+

BAL

-IN

+IN

V-

COMP

V+

OUT

BAL

-

COMP

OUT

-IN

BAL

+IN

V+

BAL

2

4

6

1

3

7

5

8

+

V-

-

Data Sheet

January 16, 2006

FN2903.8

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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