LS846
N-CHANNEL JFET
Linear Systems Low Leakage Low Noise JFET
The LS846 is a high-performance JFET featuring
extremely low noise and low leakage and is targeted for
use in a wide range of precision instrumentation
applications.
The hermetically sealed TO-71 & TO-78 packages are
well suited for military and harsh environment
applications.
(See Packaging Information).
FEATURES
LOW LEAKAGE
I
G
= 15pA TYP.
LOW NOISE
e
n
= 3nV/√Hz TYP.
ABSOLUTE MAXIMUM RATINGS @ 25°C (unless otherwise noted)
Maximum Temperatures
Storage Temperature
‐65°C to +150°C
Operating Junction Temperature
+135°C
Maximum Voltage and Current– Note 1
‐V
GSS
Gate Voltage to Drain or Source
60V
‐V
GDS
Gate Voltage to Drain or Source
60V
‐V
DSO
Drain to Source Voltage
60V
‐I
G(f)
Gate Forward Current
50mA
Maximum Power Dissipation
Device Dissipation @ Free Air – Total 350mW @ +125°C
MAX.
‐‐
‐‐
‐‐
15
3.5
3.5
50
50
30
100
20
2
0.5
7
8
3
UNITS
V
µmho
µmho
mA
V
V
pA
nA
pA
pA
µmho
µmho
dB
nV/√Hz
pF
CONDITIONS
V
DS
= 0 I
D
=1nA
V
DG
= 15V V
GS
= 0V f = 1kHz
V
DG
= 15V I
D
= 500µA
V
DG
= 15V V
GS
= 0V
V
DS
= 15V I
D
= 1nA
V
DS
=15V I
D
=500µA
V
DG
= 15V I
D
= 500µA
T
A
= +125°C
V
DG
= 3V I
D
= 500µA
V
DG
= 15V , V
DS
=0
V
DG
= 15V V
GS
= 0V
V
DG
= 15V I
D
= 500µA
V
DS
= 15V V
GS
= 0V R
G
= 10MΩ
f= 100Hz NBW= 6Hz
V
DS
=15V I
D
=500µA f=1KHz NBW=1Hz
V
DS
= 15V, I
D
=500µA
V
DG
= 15V, I
D
=500µA
LS846 Applications:
Wideband Differential Amps
High-Speed,Temp-Compensated Single-
Ended Input Amps
High-Speed Comparators
Impedance Converters and vibrations
detectors.
ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
CHARACTERISTICS
MIN.
TYP.
BV
GSS
Breakdown Voltage
60
‐‐
TRANSCONDUCTANCE
Y
fSS
Full Conduction
1500
‐‐
Y
fS
Typical Operation
1000
1500
DRAIN CURRENT
I
DSS
Full Conduction
1.5
5
GATE VOLTAGE
V
GS
(off) or V
p
Pinchoff voltage
1
‐‐
V
GS
(on)
Operating Range
0.5
‐‐
GATE CURRENT
‐I
G
max.
Operating
‐‐
15
‐I
G
max.
High Temperature
‐‐
‐‐
‐I
G
max.
Reduced V
DG
‐‐
5
‐I
GSS
max.
At Full Conduction
‐‐
‐‐
OUTPUT CONDUCTANCE
Y
OSS
Full Conduction
‐‐
‐‐
Y
OS
Operating
‐‐
0.2
NOISE
NF
Figure
‐‐
‐‐
e
n
Noise Voltage
‐‐
3
CAPACITANCE
C
ISS
Input
‐‐
‐‐
C
RSS
Reverse Transfer
‐‐
‐‐
Note 1 – These ratings are limiting values above which the serviceability of any semiconductor may be impaired
Click To Buy
TO-71 & TO-78 (Top View)
Available Packages:
LS846 / LS846 in TO-71 & TO-78
LS846 / LS846 available as bare die
Please contact
Micross
for full package and die dimensions
Tel: +44 1603 788967
Email:
chipcomponents@micross.com
Web:
http://www.micross.com/distribution
Information furnished by Linear Integrated Systems and Micross Components 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.
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