LSJ689 Datasheet, PDF (2/6 Pages) Linear Integrated Systems – LOW NOISE LOW CAPACITANCE MONOLITHIC DUAL P-CHANNEL JFET AMPLIFIER

LSJ689 PRELIMINARY
MATCHING CHARACTERISTICS @ 25°C (unless otherwise stated)
SYMBOL CHARACTERISTIC
MIN TYP MAX UNITS CONDITIONS
VGS1  VGS2 _{Differential Gate to Source Voltage}
20
mV
VDS = -15V, IG = -1mA
ID SS1
Saturation Drain Current Ratio
ID SS2
0.90
1.0
VDS = -15V, VGS = 0V
CMRR
COMMON MODE REJECTION RATIO
95 102
-20 log│∆VGS1-2/∆VDS│
db VDS = -10V to -20V, ID = -200µA
SYMBOL
en
CHARACTERISTIC
Noise Voltage
en
CISS
CRSS
Noise Voltage
Common Source Input Capacitance
Common Source Reverse Transfer
Capacitance
MIN TYP MAX UNITS CONDITIONS
2.0
nV/√Hz
VDS = -15V, ID = -2.0mA, f = 1kHz,
NBW = 1Hz
3.5
nV/√Hz
VDS = -15V, ID = -2.0mA, f = 10Hz,
NBW = 1Hz
8
pF
VDS = -15V, ID = -200µA, f = 1MHz
3
pF
ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise stated)
SYMBOL CHARACTERISTIC
MIN TYP MAX
BVGSS
Gate to Source Breakdown Voltage
50
V(BR)G1 - G2 Gate to Gate Breakdown Voltage
±30 ±45
VGS(OFF) Gate to Source Pinch-off Voltage
1.50
5.0
IDSS2
Drain to Source Saturation Current
-2.5
-30
IG
Gate Operating Current
2
IGSS
Gate to Source Leakage Current
0.9 100
Gfs
Full Conductance Transconductance 1500
Gfs
Transconductance
1500
GOS
Full Output Conductance
38
GOS
Output Conductance
3
UNITS
V
V
V
mA
pA
pA
µS
µS
µS
µS
CONDITIONS
VDS = 0V, IG = 1µA
IG= ±1µA, ID=IS=0A (Open Circuit)
VDS = -15V, ID = -1nA
VDS = -15V, VGS = 0V
VDG = -15V, ID = -200µA
VGS = 15V, VDS = 0V
VDS = -15V, VGS = 0V, f = 1kHz
VDS = -15V, ID = -200µA, f = 1kHz
VDS = -15V, VGS = 0V, f = 1kHz
VDS = -15V, ID = -200µA, f = 1kHz
NF
Noise Figure
0.5
db
VDS = -15V, VGS = 0V, RG = 10mΩ
TYPICAL SPICE PARAMETERS FOR LSJ689 IN LT SPICE FORMAT:
LSJ689_4 IDSS = 14.0mA RDS=112
.MODEL LSJ689_4 PJF (LEVEL=1 BETA=28E-4 VTO=-2.75 LAMBDA=2E-3
+ IS=4.5E-16 N= 1 RD=73 RS=35 CGD=6E-12 CGS=11E-12 PB=0.25 MJ=0.3 FC=0.5
+ KF=2E-18 AF=1 XTI=0)
Linear Integrated Systems
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Doc 201180 06/13/16 Rev#A7 ECN# LSJ689