J212
N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix J212
The J212 is a n-channel JFET General Purpose
amplifier with low noise and low leakage.
The TO-92 package is well suited for cost sensitive
applications and mass production.
(See Packaging Information).
FEATURES
DIRECT REPLACEMENT FOR SILICONIX J212
HIGH GAIN
g
fs
= 7000µmho MIN
HIGH INPUT IMPEDANCE
I
GSS
= 100pA max
LOW INPUT CAPACITANCE
C
iss
= 5pF
ABSOLUTE MAXIMUM RATINGS @ 25°C (unless otherwise noted)
Maximum Temperatures
Storage Temperature
‐55°C to +150°C
High gain
Operating Junction Temperature
‐55°C to +135°C
Low Leakage
Maximum Power Dissipation
Low Noise
Continuous Power Dissipation
360mW
J212 Applications:
Derating over temperature
3.27 mW/°C
General Purpose Amplifiers
MAXIMUM CURRENT
UHV / VHF Amplifiers
Gate Current (Note 1)
10mA
Mixers
MAXIMUM VOLTAGES
Oscillators
Gate to Drain Voltage or Gate to Source Voltage
‐25V
J212 ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
CHARACTERISTIC
MIN
TYP.
MAX
UNITS
CONDITIONS
BV
GSS
Gate to Source Breakdown Voltage
‐25
‐‐
‐‐
V
V
DS
= 0V, I
G
= ‐1µA
V
GS(off)
Gate to Source Cutoff Voltage
‐4
‐‐
‐6
V
DS
= 15V, I
D
= 1nA
I
DSS
Drain to Source Saturation Current (Note 2)
15
‐‐
40
mA
V
DS
= 15V, V
GS
= 0V
I
GSS
Gate Reverse Current (Note 3)
‐‐
‐‐
‐100
pA
V
DS
= 0V, V
GS
= ‐15V
I
G
r
DS(on)
J212 DYNAMIC ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
g
fs
g
os
C
iss
Input Capacitance
‐‐
4
‐‐
pF
V
DS
= 15V, V
GS
= 0V , f = 1MHz
C
rss
Reverse Transfer Capacitance
‐‐
1
‐‐
e
n
Equivalent Noise Voltage
‐‐
10
‐‐
nV/√Hz
V
DS
= 15V, V
GS
= 0V , f = 1kHz
J212 SWITCHING CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
CHARACTERISTIC
UNITS
CONDITIONS
J212 Benefits:
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:
J212 in TO-92
J212 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 J212 serviceability may be impaired.
Note 2 ‐ Pulse test duration = 2ms
Note 3 – Approximately doubles for every 10
°C increase in T
A
Micross Components Europe
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 Components Ltd, United Kingdom, Tel: +44 1603 788967, Fax: +44 1603788920, Email:
chipcomponents@micross.com
Web:
www.micross.com/distribution.aspx
MICROSS [ MICROSS COMPONENTS ]
