U428
U428 is monolithic dual n-channel JFET manufactured by Siliconix.
- Part of the U427 comparator family.
- Part of the U427 comparator family.
monolithic dual n-channel JFETs designed for
- -
- - Very High Input Impedance Di Herential Amplifiers
Electrometers
- Impedance Converters
Performance Curves NNT See Section 4
BENEFITS
--Siliconix
- High Input Impedance
IG = 5 p A (U427)
- High Gain 9fs = 120 Mmho Minimum @
10 = 30 MA
- Low Power Supply Operation
VGS(off} = 2 V Maximum (U427)
- Minimum System Error and Calibration
25 m V Maximum Offset
ABSOLUTE MAXIMUM RATINGS (25°C)
TO-78
Saa Section 6
Gate-to-Gate Voltage
Gate-Drain or Gate-Source Voltage
Gate Current
=Device Dissipation (Each Side), T A 25°C
±40V -40 V 10 m A
~~G, G2
(Derate 3.2 m W;o C to 150°C) .
400m W
8, 82
=Total Device Dissipation, T A 25° C
(Derate 6.0 m W;o C to 150°C)
Storage Temperature Range
750m W -65 to +150°C
ELECTRICAL CHARACTERISTICS (25°C unless otherwise noted) c S2
405 °2 o 0,
G1 b
0 G2
'0 7 01 ,0
S,
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