MCP6421 datasheet(21/34 Pages) MICROCHIP

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 2013 Microchip Technology Inc.

DS25165A-page 21

MCP6421

5.0

DESIGN AIDS

Microchip provides the basic design tools needed for

the MCP6421 op amp.

5.1

SPICE Macro Model

The latest SPICE macro model for the MCP6421 op

amp is available on the Microchip web site at

www.microchip.com. The model was written and tested

in the official OrCAD (Cadence®) owned PSpice®. For

the other simulators, translation may be required.

The model covers a wide aspect of the op amp's

electrical specifications. Not only does the model cover

voltage, current and resistance of the op amp, but it

also covers the temperature and the noise effects on

the behavior of the op amp. The model has not been

verified outside of the specification range listed in the

op amp data sheet. The model behaviors under these

conditions cannot ensure it will match the actual op

amp performance.

Moreover, the model is intended to be an initial design

tool. Bench testing is a very important part of any

design and cannot be replaced with simulations. Also,

simulation results using this macro model need to be

validated by comparing them to the data sheet

specifications and characteristic curves.

5.2

FilterLab® Software

Microchip’s FilterLab software is an innovative software

tool that simplifies analog active filter design using op

amps. Available at no cost from the Microchip web site

at www.microchip.com/filterlab, the FilterLab design

tool provides full schematic diagrams of the filter circuit

with component values. It also outputs the filter circuit

in SPICE format, which can be used with the macro

model to simulate the actual filter performance.

5.3

Microchip Advanced Part Selector

(MAPS)

MAPS is a software tool that helps semiconductor

professionals efficiently identify the Microchip devices

that fit a particular design requirement. Available at no

cost

from

the

Microchip

website

www.microchip.com/ maps, the MAPS is an overall

selection tool for Microchip’s product portfolio that

includes Analog, Memory, MCUs and DSCs. Using this

tool, you can define a filter to sort features for a

parametric search of devices and export side-by-side

technical comparison reports. Helpful links are also

provided for data sheets, purchase and sampling of

Microchip parts.

5.4

Analog Demonstration and

Evaluation Boards

Microchip

offers

broad

spectrum

Analog

Demonstration

and

Evaluation

Boards

that

are

designed to help you achieve faster time to market. For

complete

listing

these

boards

and

their

corresponding user’s guides and technical information,

visit the Microchip web site at www.microchip.com/

analogtools.

Some boards that are especially useful are:

• MCP6XXX Amplifier Evaluation Board 1

• MCP6XXX Amplifier Evaluation Board 2

• MCP6XXX Amplifier Evaluation Board 3

• MCP6XXX Amplifier Evaluation Board 4

• Active Filter Demo Board Kit

• 5/6-Pin SOT-23 Evaluation Board, P/N VSUPEV2

5.5

Application Notes

The following Microchip Analog Design Note and

Application Notes are available on the Microchip web

site

www.microchip.com/appnotes,

and

are

recommended as supplemental reference resources.

• ADN003 – “Select the Right Operational Amplifier

for your Filtering Circuits”, DS21821

• AN722 – “Operational Amplifier Topologies and

DC Specifications”, DS00722

• AN723 – “Operational Amplifier AC Specifications

and Applications”, DS00723

• AN884 – “Driving Capacitive Loads With Op

Amps”, DS00884

• AN990 – “Analog Sensor Conditioning Circuits –

An Overview”, DS00990

• AN1177 – “Op Amp Precision Design: DC Errors”,

DS01177

• AN1228 – “Op Amp Precision Design: Random

Noise”, DS01228

• AN1297 – “Microchip’s Op Amp SPICE Macro

Models”, DS01297

• AN1332: “Current Sensing Circuit Concepts and

Fundamentals”’ DS01332

• AN1494: “Using MCP6491 Op Amps for Photode-

tection Applications”’ DS01494

These application notes and others are listed in the

design guide:

• “Signal Chain Design Guide”, DS21825

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