VGS(off) -1.0 -4.5 Siliconix 2N3958 V(BR)GSS

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VGS(off) -1.0 -4.5 Siliconix 2N3958 V(BR)GSS

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Monolithic Channel JFET Dual
VGS(off)
-1.0 -4.5
Siliconix
2N3958
V(BR)GSS
(mS)
(pA)
jVGS1 VGS2j (mV)
Features
Monolithic Design High Slew Rate Offset/Drift Voltage Gate Leakage: Noise: nV/Hz High CMRR:
Benefits
Tight Differential Match Current Improved Speed, Settling Time Accuracy Minimum Input Error/Trimming Requirement Insignificant Signal Loss/Error Voltage High System Sensitivity Minimum Error with Large Input Signal
Applications
Wideband Differential Amps High Speed,Temp Compensated, Single Ended Input Amps High Speed Comparators Impedance Converters
Description
cost 2N3958 JFET dual designed high performance differential amplification wide range precision test instrumentation applications. This series features tightly matched specs, gate leakage accuracy, wide dynamic range with guaranteed hermetically sealed package available with full military processing (see Military Information 2N5545/5546/5547JANTX/JANTXV data sheet). similar products 2N5196/5197/5198/5199, noise U/SST401 series, high gain 2N5911/5912, leakage U421/423 data sheets.
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Absolute Maximum Ratings
Gate Drain, Gate Source Voltage Gate Current Lead Temperature (1/16" from case sec.) Storage Temperature 200_C Operating Junction Temperature 150_C P-37995-Rev. (08/11/94) Power Dissipation Sidea Totalb
Notes Derate mW/_C above 85_C Derate mW/_C above 85_C
2N3958
Specificationsa
Limits Parameter Static
Gate Source Breakdown Voltage Gate Source Cutoff Voltage Saturation Drain Currentc Gate Reverse Current V(BR)GSS VGS(off) IDSS IGSS 150_C =125_C -0.5 -1.0 -0.8 -1.5
Siliconix
Symbol
Test Conditions
Typb
Unit
-4.5 -100 -500 -250 -4.2
Gate Operating Current Gate Source Voltage Gate Source Forward Voltage
VGS(F)
Dynamic
Common Source Forward Transconductance Common Source Output Conductance Common Source Input Capacitance Common Source Reverse Transfer Capacitance Drain Gate Capacitance Equivalent Input Noise Voltage Noise Figure Ciss Crss
Matching
Differential Gate Source Voltage Gate Source Voltage Differential Change with Temperature Saturation Drain Current Ratio Transconductance Ratio Differential Output Conductance Differential Gate Current Common Mode Rejection Ratiod |VGS1 VGS2| D|VGS1 VGS2| DSS1 DSS2 gfs1 gfs2 |gos1 gos2| CMRR 125_C 0.85 0.85 0.97 0.97 mV/_C
125_C
Notes 25_C unless otherwise noted. Typical values DESIGN ONLY, guaranteed subject production testing. Pulse test: v300 duty cycle v3%. This parameter registered with JEDEC.
P-37995-Rev. (08/11/94)
Siliconix
2N3958
Forward Transconductance (mS) Gate Leakage 125_C IGSS 125_C 25_C IGSS 25_C
Typical Characteristics
Saturation Drain Current (mA)
Drain Current Transconductance Gate Source Cutoff Voltage
Gate Leakage Current
IDSS
VGS(off) Gate Source Cutoff Voltage IDSS
Drain Gate Voltage
Output Characteristics
VGS(off)
Output Characteristics
VGS(off)
-0.3 -0.6
Drain Current (mA)
-0.2
Drain Current (mA)
-0.9 -1.2 -1.5
-0.4 -0.6 -0.8 -1.0 -1.2 -1.4
-1.8 -2.1 -2.4
Drain Source Voltage
Drain Source Voltage
Output Characteristics
VGS(off)
Output Characteristics
VGS(off)
-0.3 -0.6 -0.9 -1.2 -1.5 -1.8
Drain Current (mA)
-0.2 -0.4
Drain Current (mA)
-0.6 -0.8 -1.0
-1.6
-1.2 -1.4
-2.1 -2.4
Drain Source Voltage P-37995-Rev. (08/11/94)
Drain Source Voltage
2N3958
Typical Characteristics (Cont'd)
Siliconix
Gate Source Differential Voltage Drain Current
25_C
Transfer Characteristics
VGS(off) (mV) VGS1 VGS2 -1.5 -2.0 -2.5
Drain Current (mA)
-55_C 25_C
125_C
-0.5
-1.0
0.01
Drain Current (mA)
Gate Source Voltage
Voltage Differential with Temperature Drain Current
125_C 25_C CMRR (dB)
Common Mode Rejection Ratio Drain Current
CMRR DVDG VGS1 VGS2
DVDG 0.01
VGS1 VGS2
0.01
Drain Current (mA)
Drain Current (mA)
Voltage Gain
rDS(on) Drain Source Resistance
Circuit Voltage Gain Drain Current
Resistance Drain Current
VGS(off) RLgos VGS(off)
VGS(off) VGS(off)
0.01
Assume Drain Current (mA)
0.01
Drain Current (mA)
P-37995-Rev. (08/11/94)
Siliconix
2N3958
Crss Reverse Feedback Capacitance (pF)
Typical Characteristics (Cont'd)
Ciss Input Capacitance (pF)
Common Source Input Capacitance Gate Source Voltage
Common Source Reverse Feedback Capacitance Gate Source Voltage
Gate Source Voltage
Gate Source Voltage
Noise Voltage
Equivalent Input Noise Voltage Frequency
Output Conductance (mS)
Output Conductance Drain Current
VGS(off) -55_C
25_C
125_C
Frequency (Hz)
0.01
Drain Current (mA)
VGS(off)
rDS(on) Drain Source Resistance
Forward Transconductance (mS)
Common Source Forward Transconductance Drain Current
Resistance Output Conductance Gate Source Cutoff Voltage
Output Conductance (mS)
25_C
-55_C
125_C
0.01
Drain Current (mA)
VGS(off) Gate Source Cutoff Voltage
P-37995-Rev. (08/11/94)

VGS(off) -1.0 -4.5 Siliconix 2N3958 V(BR)GSS

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