Linear LSK389-A-SOIC-8 Ultra low noise monolithic dual n-channel jfet Datasheet

LSK389
ULTRA LOW NOISE
MONOLITHIC DUAL
N-CHANNEL JFET
Linear Integrated Systems
FEATURES
ULTRA LOW NOISE
TIGHT MATCHING
HIGH BREAKDOWN VOLTAGE
HIGH GAIN
LOW CAPACITANCE
en = 0.9nV/√Hz (typ)
|VGS1-2| = 20mV max
BVGSS = 40V max
Yfs = 20mS (typ)
25pF typ
TO-71
BOTTOM VIEW
IMPROVED SECOND SOURCE REPLACEMENT FOR 2SK389
ABSOLUTE MAXIMUM RATINGS1
@ 25 °C (unless otherwise stated)
Maximum Temperatures
Storage Temperature
Operating Junction Temperature
Maximum Power Dissipation
Continuous Power Dissipation @ +125 °C
Maximum Currents
Gate Forward Current
Maximum Voltages
Gate to Source
Gate to Drain
G1
D1
3
2
S1
S2
5
6
1
-65 to +150 °C
-55 to +135 °C
7
D2
G2
SOIC-A
S1
1
8
G2
D1
2
7
SS
SS
3
6
D2
G1
4
5
S2
400mW
IG(F) = 10mA
*For equivalent single version, see LSK170 family.
VGSS = 40V
VGDS = 40V
MATCHING CHARACTERISTICS @ 25 °C (unless otherwise stated)
SYMBOL
VGS1 − VGS2
IDSS1
IDSS2
CHARACTERISTIC
Differential Gate to Source Cutoff
Voltage
MIN
Gate to Source Saturation Current Ratio
0.9
TYP
MAX
UNIT
CONDITIONS
20
mV
VDS = 10V, ID = 1mA
-
VDS = 10V, VGS = 0V
ELECTRICAL CHARACTERISTICS @ 25 °C (unless otherwise stated)
SYMBOL
BVGSS
VGS(OFF)
IDSS
IGSS
CHARACTERISTIC
MIN
Gate to Source Breakdown Voltage
Gate to Source Pinch-off Voltage
Drain to Source Saturation
Current
MAX UNITS
40
0.15
2
LSK389A
2.6
6.5
LSK389B
6
12
LSK389C
10
20
Gate to Source Leakage Current
Linear Integrated Systems
TYP
200
CONDITIONS
V
VDS = 0, ID = 100µA
V
VDS = 10V, ID = 0.1µA
mA
VDS = 10V, VGS = 0
pA
VGS = -30V, VDS = 0
• 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261
ELECTRICAL CHARACTERISTICS CONT. @ 25 °C (unless otherwise stated)
SYMBOL
CHARACTERISTIC
MIN
TYP
8
20
MAX UNITS
Yfs
Full Conduction Transconductance
en
Noise Voltage
0.9
1.9
nV/√Hz
en
Noise Voltage
2.5
4
nV/√Hz
Common Source Input Capacitance
Common Source Reverse Transfer Cap.
25
5.5
CISS
CRSS
mS
pF
pF
CONDITIONS
VDS = 10V, VGS = 0, IDSS = 3mA,
f = 1kHz
VDS = 10V, ID = 2mA, f = 1kHz,
NBW = 1Hz
VDS = 10V, ID = 2mA, f = 10Hz,
NBW = 1Hz
VDS = 10V, VGS = 0, f = 1MHz,
VDG = 10V, ID = 0, f = 1MHz,
ORDERING INFORMATION
LSK389 - A -
SOIC-8
IDSS Range
Package
A 2.6 - 6.5 mA
B 6 - 12 mA
C 10 - 20 mA
71
SOIC-8
TO-71 6L
SOIC-A 8L
PACKAGE DIMENSIONS
SOIC
TO-71
Six Lead
0.230
DIA.
0.209
0.195
DIA.
0.175
0.030
MAX.
0.021
0.150
0.115
6 LEADS
0.014
0.018
0.500 MIN.
1
8
2
7
3
6
4
5
0.150
0.157
0.0075
0.0098
0.050
5
6
1
0.046
0.036
1.
0.2284
0.2440
DIMENSIONS IN
INCHES
2 3
45°
0.189
0.196
0.0040
0.0098
0.019 DIA.
0.016
0.100
0.050
7
0.048
0.028
Absolute maximum ratings are limiting values above which serviceability may be impaired.
Information furnished by Linear Integrated Systems is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other
rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Linear Integrated Systems. Revised 07 December
2005.
Linear Integrated Systems
• 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261
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