formula and data sheet -...
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Version 8.0
Formula and Data Sheet PHYSICAL CONSTANTS
Material (eV) (cm-3
K-3/2
)
Silicon (Si) 1.1
Gallium arsenide (GaAs) 1.4
Germanium (Ge) 0.66
Electron charge, e (or q) =
Boltzmann constant,
DIODES and RELATED
Intrinsic carrier concentration ⁄ (
)
Thermal equilibrium condition
Thermal Voltage
Built-in potential barrier
(
) (
)
Electron and hole drift
1-D electron diffusion relationship
1-D hole diffusion relationship
Einstein relation
Diode Equation [ (
) ]
Junction & diffusion capacitance (
)
Version 8.0
MOSFETS
NMOS Enhancement
PMOS Enhancement
Region NMOS PMOS
Non-Saturation/Ohmic [ ( ) ] [ ( )
]
Saturation ( ) ( )
( ) ( )
Transition Point ( )
( ( ))
( )
( ( ))
Enhancement Mode
Depletion Mode
MOSFET Constants & Capacitances
Version 8.0
MOSFET Small-Signal Models
NMOS
PMOS
PMOS
(Note Polarities)
[ ( ) ]
√ (NMOS)
√ (PMOS)
Version 8.0
NPN BJT DC Equivalent Circuit
( )
PNP BJT DC Equivalent Circuit
( )
BJT Current Relationships
NPN PNP
⁄
⁄
Both Transistors
⁄
( )
Version 8.0
BJT Hybrid- Small-Signal Models
NPN
PNP
Extended BJT Hybrid- Small-Signal Model
⁄ ⁄ ⁄
( )
( )
( )
(
)
Version 8.0
BJT Impedance Scaling
( )
( )
( )( )
( )( )
Output Resistance Scaling
( )
( ‖ ) [ ( ‖ )]
[ ( ‖ )]
[ (( )‖ )]
Version 8.0
h-Parameters
2121111 vhihv
2221212 vhihi
0
1
111 2vi
vh
0
1
221 2vi
ih 0
2
222 1iv
ih
BJT CE Version
cerebiebe vhihv
ceoebfec vhihi
‖
y-Parameters
2121111 vyvyi
2221212 vyvyi
0
1
111 2vv
iy 0
2
112 1vv
iy
0
1
221 2vv
iy 0
2
222 1vv
iy
0
2
112 1iv
vh
Version 8.0
Wien Bridge Oscillator
To sustain oscillation, the loop gain must be 3. Loop
gain with the two resistors is:
Also
Frequency of oscillation
3
ov
3
ov
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