jilosat.blogg.se - Transistor definition for dummies

#TRANSISTOR DEFINITION FOR DUMMIES INSTALL#
#TRANSISTOR DEFINITION FOR DUMMIES FREE#

The value of β can be large up to 200 for standard transistors, and it is this large ratio between Ic and Ib that makes the bipolar NPN transistor a useful amplifying device when used in its active region as Ib provides the input and Ic provides the output. The current in a bipolar NPN transistor is the ratio of these two currents ( Ic/Ib ), called the DC Current Gain of the device and is given the symbol of hfe or nowadays Beta, ( β ). However, this only happens when a small biasing current ( Ib ) is flowing into the base terminal of the transistor at the same time thus allowing the Base to act as a sort of current control input. Then we can see that the transistor is a current operated device (Beta model) and that a large current ( Ic ) flows freely through the device between the collector and the emitter terminals when the transistor is switched “fully-ON”. This link between the input and output circuits is the main feature of transistor action because the transistors amplifying properties come from the consequent control which the Base exerts upon the Collector to Emitter current. So in a NPN Transistor it is the movement of negative current carriers (electrons) through the Base region that constitutes transistor action, since these mobile electrons provide the link between the Collector and Emitter circuits. The Base supply voltage V B is connected to the Base resistor R B, which again is used to limit the maximum Base current. The Collector is connected to the supply voltage V CC via the load resistor, RL which also acts to limit the maximum current flowing through the device.

Stream out the mask layout and submit to the foundry, together with the DRC and LVS reports.Then the voltage sources are connected to an NPN transistor as shown.

Run a layout versus schematic (LVS) check on the final layout and implement and compare the netlist of the schematic design with IC Validator.

Run a design rule check (DRC) on the layout implementation with IC Validator from the OptoCompiler cockpit.

Adjust the schematic and/or layout design if necessary.

Re-simulate the circuit in OptSim Circuit to evaluate the impact of the changes.

Back-annotate the layout changes and confirm changes made to the schematic design.

Adjust the layout in OptoDesigner based on the footprint requirement and finish the waveguide and electrical routing.

Translate the schematic design into a layout by using the Schematic Driven Layout (SDL) capabilities of OptoCompiler.

These custom devices can be used together with the foundry PDK components.

Use Photonic Device Compiler to design custom devices when the standard PDK from the foundry doesn’t meet the design request.

Simulate the circuit and optimize the optical performance in OptSim.

Make a schematic design in OptoCompiler.

#TRANSISTOR DEFINITION FOR DUMMIES INSTALL#

Install the foundry’s process design kit (PDK) for Synopsys tools.The following steps describe the workflow used by a customer to design a PIC for an optical transceiver. This platform is complemented with the ability to develop custom components using Photonic Device Compiler and generate symbols, models and layout for OptoCompiler and OptSim. With the photonic DRC and LVS capabilities of IC Validator, the flow is complete to obtain first-time-right design for manufacturing. OpSim is integrated with PrimeWave for simulation set-up and analysis and enables the capability of electro-optic co-simulation with PrimeSim. At the system and photonic integrated circuit and levels, Synopsys offers industries first unified E/O co-design platform with OptoCompiler as design cockpit for schematic capture and layout and OptSim for simulation.

#TRANSISTOR DEFINITION FOR DUMMIES FREE#

OptSim is Synopsys award-winning solution to simulate the behavior and performance of optical fiber and free space systems for applications in telecom, datacom, radio-over-fiber and emerging applications like LiDAR.Sentaurus TCAD geometry can be imported into RSoft photonic design tools such as FullWAVE FDTD for finite-difference time-domain (FDTD) analysis, BeamPROP BPM for rapid analysis of silicon photonics devices, and DiffractMOD RCWA for diffractive optical structure analysis. The RSoft Photonic Device Tools can be utilized stand-alone and are integrated with Synopsys Sentaurus TCAD products to provide streamlined, multi-disciplinary simulations of complex optoelectronic devices.Synopsys offers a seamless design flow to help design and analyze, layout and verify photonic devices, systems, and integrated circuits.