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U423

Calogic LLC
Part Number U423
Manufacturer Calogic LLC
Description N-Channel Dual JFET
Published Apr 16, 2005
Detailed Description N-Channel Dual JFET CORPORATION U421 – U426 FEATURES DESCRIPTION The Calogic U421 Series are Dual N-Channel JFETs on a ...
Datasheet PDF File U423 PDF File

U423
U423

Overview
N-Channel Dual JFET CORPORATION U421 – U426 FEATURES 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 • Ultra Low Input Bias Current .
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250 Fempto Amps • Low Operating Current • Tight Matching Characteristics Low Leakage FET Input Op Amps • Ultra • Electrometer • Infrared Detectors • pH Meters APPLICATIONS PIN CONFIGURATION TO-78 1 2 3 4 5 6 7 SOURCE 1 DRAIN 1 GATE 1 CASE/BODY SOURCE 2 DRAIN 2 GATE 2 4 5 3 2 1 6 7 BOTTOM VIEW C S2 G1 D2 D1 G2 S1 CJ4 U421 – U426 CORPORATION ABSOLUTE MAXIMUM RATINGS (TA = 25oC unless otherwise noted) Gate-to-Gate Voltage.
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±40V Gate-Drain or Gate-Source Voltage .
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-40V Gate Current .
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10mA Device Dissipation (Each Side), TA = 25oC (Derate 3.
2 mW/ oC to 150oC) .
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400mW ELECTRICAL (25oC Unless otherwise noted) noted) ELECTRICAL CHARACTERISTICS CHARACTERISTICS (25oC unless otherwise SYMBOL STATIC BVGSS BVG1G2 IGSS Gate-Source Breakdown Voltage Gate-Gate Breakdown Voltage Gate Reverse Current (1) Total Device Dissipation, TA = 25oC (Derate 6.
0 mW/ oC to 150oC) .
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750 mW Storage Temperature Range .
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-65oC to +150oC CHARACTERISTIC U421-3 MIN -40 ±40 1.
0 1.
0 TYP MAX -60 MIN -40 ±40 U424-6 TYP -60 MAX UNIT TEST CONDITIONS V 3.
0 3.
0 0.
5 -500 pA nA pA IG...


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