LSJ111
N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix J111
This n-channel JFET is optimised for low noise high
performance switching. The part is particularly suitable
for use in low noise audio amplifiers. The TO-92
package is well suited for cost sensitive applications
and mass production.
(See Packaging Information).
FEATURES
DIRECT REPLACEMENT FOR SILICONIX J111
LOW GATE LEAKAGE CURRENT
5pA
FAST SWITCHING
t
(on)
≤ 4ns
ABSOLUTE MAXIMUM RATINGS @ 25°C (unless otherwise noted)
Maximum Temperatures
Storage Temperature
‐55°C to +150°C
LSJ111 Benefits:
Operating Junction Temperature
‐55°C to +135°C
Short Sample & Hold Aperture Time
Maximum Power Dissipation
Low insertion loss
Continuous Power Dissipation
360mW
Low Noise
MAXIMUM CURRENT
LSJ111 Applications:
Gate Current (Note 1)
50mA
Analog Switches
MAXIMUM VOLTAGES
Commutators
Gate to Drain Voltage
V
GDS
= ‐35V
Choppers
Gate to Source Voltage
V
GSS
= ‐35V
LSJ111 ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
CHARACTERISTIC
MIN
TYP.
MAX
UNITS
CONDITIONS
BV
GSS
Gate to Source Breakdown Voltage
‐35
‐‐
‐‐
I
G
= 1µA, V
DS
= 0V
V
GS(off)
Gate to Source Cutoff Voltage
‐3
‐‐
‐10
V
DS
= 5V, I
D
= 1µA
V
V
GS(F)
Gate to Source Forward Voltage
‐‐
0.7
‐‐
I
G
= 1mA, V
DS
= 0V
I
DSS
Drain to Source Saturation Current (Note 2)
20
‐‐
‐‐
mA
V
DS
= 15V, V
GS
= 0V
I
GSS
Gate Reverse Current
‐‐
‐0.005
‐1
nA
V
GS
= ‐15V, V
DS
= 0V
I
G
I
D(off)
r
DS(on)
LSJ111 DYNAMIC ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
g
fs
g
os
Output Conductance
‐‐
25
‐‐
µS
r
DS(on)
Drain to Source On Resistance
‐‐
‐‐
30
Ω
V
GS
= 0V, I
D
= 0mA, f = 1kHz
C
iss
Input Capacitance
‐‐
7
12
pF
V
DS
= 0V, V
GS
= ‐10V, f = 1MHz
C
rss
Reverse Transfer Capacitance
‐‐
3
5
e
n
Equivalent Noise Voltage
‐‐
3
‐‐
nV/√Hz
V
DG
= 10V, I
D
= 1mA , f = 1kHz
LSJ111 SWITCHING CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
CHARACTERISTIC
UNITS
CONDITIONS
Turn On Time
Turn On Rise Time
Turn Off Time
Turn Off Fall Time
2
2
6
15
ns
V
DD
= 10V
V
GS
(H) = 0V
See Switching Circuit
Available Packages:
LSJ111 in TO-92
LSJ111 in bare die.
Please contact Micross for full
package and die dimensions
TO-92 (Bottom View)
t
d(on)
t
r
t
d(off)
t
f
Note 1 ‐ Absolute maximum ratings are limiting values above which LSJ111 serviceability may be impaired. Note 2 – Pulse test: PW≤ 300 µs, Duty Cycle ≤ 3%
LSJ111 SWITCHING CIRCUIT PARAMETERS
‐12V
R
L
800Ω
I
D(on)
12mA
Micross Components Europe
V
GS(L)
SWITCHING TEST CIRCUIT
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.
MICROSS [ MICROSS COMPONENTS ]
