CiFET

Complementary Current-Injection Field-Effect Transistor

A CiFET is a pair of Complementary iFETs connected at their Drain with a Common Gate and support 2 Non-Inverting Current Injection Ports (iPort)

Source Channel

Characteristic (Rin) Resistance
Absorbs iPort Input Energy
Constant Channel Current
High Conductance
Very High Speed
Low Noise
Wide Dynamic Range

Drain Channel

Reacts to iPort Input Current
Common-Gate Stage
Low Noise

NiFET (N-type Current Field Effect Transistor)

CiFET are 2 iFETs Connected with a Common Gate and 2 Current Injection Ports (iPort)

iPort Operation is similar to a BiPolar transistor: a base current is input into a Vbe.

The CiFET iIn is also valid in either direction as well as zero; yielding no crossover discontinuity.

All input modes are precisely linear & algebraically sum.

The width to length ratios of the source and drain channels can be adjusted for different performance optimizations.

~3*Wider P-channels can balance out P-to-N mobility differences for electrical symmetry.

Abundant carrier sub-surface conduction provides high-speed with low resistance and low surface trap noise, without speed-limiting carrier velocity saturation. Ultra-Linear transfer function is a result of complementary cancellation of higher-order terms.

CiFET™ is a Platform for Semiconductor Amplifier Devices

	CiFET Inverting Voltage Gain	CiFET Current Inverter	CiFET Voltage to Current FET	CiFET Complementary Current-Injection FET
Input Signal	Voltage In	Current In	Voltage In	Current In
Output Signal	Voltage Out	Current Out	Current Out	Voltage Out
Gain	mu (µ)	Beta (β)	Transconductance (gm)	TransResistance (rm)
Controlled By	Voltage at Gate	N-Channel Current P-Channel Current Both Currents	Voltage at Gate	N-Channel Current P-Channel Current Both Currents
iPort (inputs)	Injection Port Not Used	Injection Port Current In P-Channel Injection Port Current In N-Channel Injection Port Current In Both Channels	Injection Port Not Used	Injection Port Current In P-Channel Injection Port Current In N-Channel Injection Port Current In Both Channels
iPort (outputs)	Injection Port Not Used	Injection Port Current Out P-Channel Injection Port Current Out N-Channel Injection Port Current Out Both Channels	Injection Port Not Used	Injection Port Current Out P-Channel Injection Port Current Out N-Channel Injection Port Current Out Both Channels
Impedance	High Input Impedance Low Output Impedance	Low Input Impedance High Output Impedance	High Input Impedance Low Output Impedance	Low Input Impedance High Output Impedance