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PDF LS4118 Data sheet ( Hoja de datos )
| Número de pieza | LS4118 | |
| Descripción | High Impedence | |
| Fabricantes | Micross | |
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LS4118
N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix 2N4118
The LS4118 is an Ultra-High Input Impedance N-Channel JFET
The LS4118 provides ultra-high input impedance. The
device is specified with a 10-pA limit and is ideal for use
as a high-impedance sensitive front-end amplifier.
LS4118 Benefits:
Insignificant Signal Loss/Error Voltage
with High-Impedance Source
Low Power Consumption (Battery)
Maximum Signal Output, Low Noise
High Sensitivity to Low-Level Signals
LS4118 Applications:
High-Impedance Transducer
Smoke Detector Input
Infrared Detector Amplifier
Precision Test Equipment
FEATURES
DIRECT REPLACEMENT FOR SILICONIX 2N4118
LOW POWER
MINIMUM CIRCUIT LOADING
ABSOLUTE MAXIMUM RATINGS
@ 25°C (unless otherwise noted)
Maximum Temperatures
Storage Temperature
Operating Junction Temperature
Maximum Power Dissipation
Continuous Power Dissipation
MAXIMUM CURRENT
Gate Current (Note 1)
MAXIMUM VOLTAGES
Gate to Drain or Gate to Source (Note 2)
IDSS<90 µA
IGSS<10 pA
‐65°C to +175°C
‐55°C to +150°C
300mW
50mA
‐40V
LS4118 ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
BVGSS
VGS(off)
IDSS
ClickIGSS
CHARACTERISTIC
Gate to Source Breakdown Voltage
Gate to Source Cutoff Voltage
Gate to Source Saturation Current
Gate Leakage Current
MIN
‐40
‐1
0.08
‐‐
To BuyTYP.
‐‐
‐‐
‐‐
‐‐
MAX
‐‐
‐3
0.24
‐10
UNITS
V
V
mA
pA
CONDITIONS
IG = ‐1µA, VDS = 0V
VDS = 10V, ID = 1nA
VDS = 10V, VGS = 0V
VGS = ‐20V, VDS = 0V
‐‐ ‐‐ ‐25
gfs Forward Transconductance(Note 3) 80 ‐‐ 250
gos
Output Conductance
‐‐ ‐‐
5
µmho
VGS = ‐20V, VDS = 0V, 150°C
VDS = 10V, VGS = 0V, f = 1kHz
Ciss
Input Capacitance
‐‐ ‐‐
3
pF
VDS = 10V, VGS = 0V, f = 1MHz
Crss
Reverse Transfer Capacitance
‐‐
‐‐
1.5
1 . Absolute maximum ratings are limiting values above which LS4118 serviceability may be impaired.
NOTES 2. Due to symmetrical geometry, these units may be operated with source and drain leads interchanged
3. This parameter is measured during a 2ms interval 100ms after power is applied. (Not a JEDEC condition.)
Micross Components Europe
Tel: +44 1603 788967
Email: [email protected]
Web: http://www.micross.com/distribution
Available Packages:
LS4118 in SOT-23
LS4118 in bare die.
Please contact Micross for full
package and die dimensions
SOT-23 (Top View)
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: [email protected] Web: www.micross.com/distribution.aspx
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