LS846 Datasheet PDF - Micross

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LS846
Micross

Part Number LS846
Description Ultra Low Noise
Page 1 Pages


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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 6 Pin SOT-23 package provides ease of
manufacturing, and a lower cost assembly option.
(See Packaging Information).
LS846 Applications:
ƒ Wideband Differential Amps
ƒ High-Speed,Temp-Compensated Single-
Ended Input Amps
ƒ High-Speed Comparators
ƒ Impedance Converters and vibrations
detectors.
ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL 
CHARACTERISTICS 
MIN. 
BVGSS 
Breakdown Voltage 
60 
 
TRANSCONDUCTANCE 
 
YfSS 
Full Conduction 
1500 
YfS 
 
IDSS 
 
VGS(off) or Vp 
ClickVGS(on) 
Typical Operation 
DRAIN CURRENT 
Full Conduction 
GATE VOLTAGE 
Pinchoff voltage 
Operating Range 
1000 
 
1.5 
 
1 
0.5 
 
GATE CURRENT 
 
IGmax. 
Operating 
‐‐ 
IGmax. 
High Temperature 
‐‐ 
IGmax. 
Reduced VDG 
‐‐ 
IGSSmax. 
At Full Conduction 
‐‐ 
 
OUTPUT CONDUCTANCE 
 
YOSS  Full Conduction  ‐‐ 
YOS  Operating  ‐‐ 
 
NOISE 
 
NF  Figure  ‐‐ 
en 
Noise Voltage 
‐‐ 
 
CAPACITANCE 
 
CISS  Input  ‐‐ 
CRSS  Reverse Transfer  ‐‐ 
FEATURES 
LOW LEAKAGE 
IG = 15pA TYP. 
LOW NOISE 
en = 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 
VGSS 
Gate Voltage to Drain or Source 
VGDS 
Gate Voltage to Drain or Source 
VDSO 
Drain to Source Voltage 
IG(f)  Gate Forward Current 
Maximum Power Dissipation 
60V 
60V 
60V 
50mA 
Device Dissipation @ Free Air  Total                 350mW @ +125°C 
 
 
 
 
 
 
 
TYP.  MAX. 
UNITS 
CONDITIONS 
‐‐  ‐‐ 
V 
VDS = 0                  ID=1nA 
  
 
 
‐‐  ‐‐ 
µmho 
VDG= 15V         VGS= 0V      f = 1kHz 
To Buy1500 
 
5 
 
‐‐ 
‐‐ 
‐‐ 
 
15 
 
3.5 
3.5 
µmho 
 
mA 
 
V 
V 
     VDG= 15V         ID= 500µA     
 
VDG= 15V              VGS= 0V 
 
VDS= 15V               ID= 1nA 
              VDS=15V                 ID=500µA 
  
 
 
15  50 
pA 
VDG= 15V ID= 500µA 
‐‐  50 
nA  TA= +125°C
 
5  30 
pA 
VDG = 3V ID= 500µA 
‐‐  100 
pA 
VDG= 15V , VDS =0 
  
 
 
‐‐  20 
µmho 
VDG= 15V              VGS= 0V 
0.2  2 
µmho 
VDG=  15V            ID= 500µA 
  
  VDS= 15V      VGS= 0V       RG= 10MΩ 
‐‐  0.5 
dB 
f= 100Hz           NBW= 6Hz 
3  7 
nV/Hz 
VDS=15V   ID=500µA  f=1KHz NBW=1Hz 
  
 
 
‐‐  8 
‐‐  3 
 
pF 
VDS= 15V,   ID=500µA   
 
  VDG= 15V,   ID=500µA   
Note 1 – These ratings are limiting values above which the serviceability of any semiconductor may be impaired
Available Packages:
LS846 / LS846 in SOT-23
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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