U424 查看數據表（PDF） - Calogic, LLC

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U424

N-Channel Dual JFET

Calogic, LLC 

N-Channel Dual JFET

CORPORATION

U421 – U426

FEATURES

Ultra Low Input Bias Current . . . . . . . 250 Fempto Amps

• Low Operating Current

•• Tight Matching Characteristics

APPLICATIONS

Ultra Low Leakage FET Input Op Amps

• Electrometer

• Infrared Detectors

•• pH Meters

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 -55oC to +150oC

XU421-U426 Sorted Chips in Carriers -55oC to +150oC

PIN CONFIGURATION

TO-78

CJ4

C

S2 D2

G1

G2

D1 S1

1 SOURCE 1

2 DRAIN 1

3 GATE 1

4 CASE/BODY

5 SOURCE 2

6 DRAIN 2

7 GATE 2

4

3

5

6

217

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