LS320
BiFET Amplifier
Linear Systems High Input Impedance BiFET Amplifier
FEATURES
HIGH INPUT IMPEDANCE
The LS320 is a high input impedance amplifier
produced using a BiFET process and packaged in
SOT-23.
rGs ≥ = 100GΩ
YFS = 30,000µS
HIGH TRANSCONDUCTANCE
ABSOLUTE MAXIMUM RATINGS 1@ 25°C (unless otherwise noted)
The SOT-23 package is well suited for cost sensitive
applications and mass production.
Maximum Temperatures
Storage Temperature
Operating Junction Temperature
Maximum Power Dissipation
Continuous Power Dissipation @ +125°C
Maximum Currents
Drain Current
Maximum Voltages
Drain to Source
Gate to Source
‐65°C to +150°C
‐55°C to +125°C
(See Packaging Information).
200mW
2.3mW/°C
ID = 25mA
LS320 Features:
High Input Impedance
High Transconductance
VDSO = 20V
VGSS = 20V
ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted)
SYMBOL
VDS
VGS
CHARACTERISTICS
Drain to Source Voltage
Collector to Source Voltage
Common Source Forward
Transconductance
MIN.
‐20
‐12
TYP.
‐‐
‐10
‐‐
MAX.
‐‐
‐7
UNITS
V
V
CONDITIONS
IDS = 100µA, VGS = 0
IDS = 10mA, VGS = ‐10V23
gfs
30000
‐‐
µS
IDS = 10mA, VGS = ‐10V, f =1kHz
goss
rGs
CISS
CRSS
en
Common Source Output Conductance
Gate to Source Input Resistance
Input Capacitance
‐‐
100
‐‐
‐‐
‐‐
300
‐‐
8
1.5
25
‐‐
‐‐
‐‐
‐‐
‐‐
GΩ
pA
pF
VGS = 0 to 20V, TJ to 125°C
IDS = 100µA, VDS = ‐10V
IDS = 10mA, VGS = ‐10V
Reverse Transfer Capacitance
Noise Voltage
µV
IDS = 10mA, VDS = 10V, BW = 50 to 15 kHz
Notes:
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1. Absolute Maximum ratings are limiting values above which serviceability may be impaired
2. The gate to source voltage must never exceed 100V, t < 10ms
3. Additional screening available
Functional Schematic
Micross Components Europe
SOT-23 (Top View)
Available Packages:
LS320 in SOT-23
LS320 in 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.