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| 型號： | AB-027 |
| 英文描述： | AB-027 - High Speed Data Conversion |
| 中文描述： | 抗體- 027 -高速數(shù)據(jù)轉(zhuǎn)換 |
| 文件頁數(shù)： | 1/42頁 |
| 文件大?。?/td> | 606K |
| 代理商： | AB-027 |
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APPLICATION BULLE TIN
Mailing Address: PO Box 11400 Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd. Tucson, AZ 85706
Tel: (602) 746-1111 Twx: 910-952-111 Telex: 066-6491 FAX (602) 889-1510 Immediate Product Info: (800) 548-6132
INTRODUCTION
Computer based simulation has an importance because it can
significantly reduce the development time and therefore
speed up the time-to-market process. The increased use of
SPICE based simulation software has created a rising de-
mand for accurate models. Such models, or macromodels,
should reflect the actual performance of the component, but
without carrying the burden of too many circuit details,
which can lead to convergence problems. BURR-BROWN
has responded to this need and provides macromodels for a
broad range of semiconductor products. This Application
Bulletin, and the accompanying disk is a collection of
SPICE models of BURR-BROWN op amps, difference
amps, instrumentation amps, isolation amps, and analog
function circuits. There are four different levels of model
topologies used, which are:
Level I:
Standard Macromodel
Level II: Enhanced Macromodel
Level III: Multi-Pole/Zero Macromodel
Level IV: Simplified Circuit Model
The standard op amp macromodels were derived using the
MicroSim Corporation PSpice
Parts simulation software.
A detailed description on this macromodel type is given in
Section A.
The second level of macromodel is an enhanced version of
the standard model, which is indicated by the suffix “E” in
the model’s name. This model type is included to offer the
circuit designer a model with a higher level of accuracy. See
Section B for details.
The Multiple-Pole/Zero macromodel uses the same input
stage as the standard or enhanced op amp macromodel, but
has multiple poles and pole/zero pairs in the mid-section.
This model has the designation “M”, and was used for
wide bandwidth op amps and function circuits where this
topology showed an advantage over the standard topology.
For a detailed description see Section C.
In some instances, a fourth type of model is available,
which are designated by either an “X”, “X1”, or an “X2”
suffix. The model of this level is not a macromodel, but
rather a simplified circuit model at the transistor level. The
BURR-BROWN
SPICE BASED MACROMODELS, REV. F
By Hubert Biagi, R. Mark Stitt, Bonnie Baker, and Stephan Baier
1990 Burr-Brown Corporation
AB-020F
Printed in U.S.A. January, 1995
FILE NAME
DESCRIPTION
OPA111.MOD
OPA111E.MOD
OPA671M.MOD
OPA603X.MOD
TABLE I. Examples of Files on Macromodel Disk.
OPA111 Standard Op Amp Macromodel
OPA111 Enhanced Op Amp Macromodel
OPA671 Multiple Pole/Zero Macromodel
OPA603 Simplified Circuit Model
simplified circuit models produce the most accurate simula-
tion results, but because of the complexity, require longer
simulation time. See Section D for a detailed discussion on
these models.
For a complete overview of all available macromodels on
the disk see Table XI on the last page.
DISKETTE INFORMATION
The disk has four different subdirectories, in which the
models are organized according to their topology level:
A:\
CIR_MOD
ENH_MOD
MPZ_MOD
STD_MOD
Here, the Standard macromodels (Level I) are found in the
STD_MOD subdirectory. The Enhanced macromodels
(Level II) are found in the ENH_MOD subdirectory. The
Multi-Pole/Zero macromodels (Level III) are found in the
MPZ_MOD subdirectory, and the Simplified circuit models
(Level IV) are found in the CIR_MOD subdirectory. Ex-
amples of model files are shown in Table I. This application
bulletin and the macromodel disk are being revised fre-
quently. To obtain the latest revision please contact your
nearest sales office. Each model net-list starts with a header
containing the part number, revision information, and the
license statement. It should be noted that the disk contains
only the net-lists of the macromodels, and does not provide
the simulation software that allows the user to run the
models. The structure of the net-lists conforms to the stan-
dard SPICE format, which most SPICE based simulators
will accept. Please refer to the individual software manual if
conflicts are encountered. Burr-Brown also welcomes any
comments, which may be sent to the Applications Depart-
ment at the address given above.
PSpice
Parts
TM,
MicroSim Corp.
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