N-Channel Dual JFET

U421 – U426

FEATURES

APPLICATIONS

DESCRIPTION

The Calogic U421 Series are Dual N-Channel JFETs on a

monolithic structure designed specifically for very high input

impedance for differential amplification and impedance

matching.

This series features ultra low input bias current

(250 fempto amps, U421) while offering high gain at low

operating currents and tight matching characteristics. These

devices are available in chip form for hybrid designs as well

as a hermetic TO-78 package.

ORDERING INFORMATION

Part

Package

Temperature Range

U421-U426

TO-78 Hermetic Package -55

XU421-U426 Sorted Chips in Carriers

-55

PIN CONFIGURATION

CORPORATION

S2

G1

D2

D1

G2

S1

C

TO-78

1

2

3

4 5

BOTTOM VIEW

1

2

3

4

5

6

7

7

6

SOURCE 1

DRAIN 1

GATE 1

CASE/BODY

SOURCE 2

DRAIN 2

GATE 2

CJ4