Intel 2920 Design Handbook page 12

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INTRODUCTION AND TERMINOLOGY
Table 1-4. 2920 Benefits
Discrete Analog Components
Board full of components
Component matching: select, test, combine, match,
tune, test
Production-lot variation in circuit performance
Performance degradation over time, signal degradation,
due to circuit interaction or noise
Discrete component tolerances prohibit exact matching
of multi-pole frequency
Time-consuming fixes to problems with hardwired
design
Costly components for accuracy
Custom designs are costly, risky, and require or create
heavy commitments
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Intel 2920 Signal Processor Methodology
Single chip
System tweaking eliminated because performance from
device to device is identical: digital processing is stable,
predictable, and repeatable
Digital accuracy is repeatable
Eliminated-the 2920 restricts degradation of signal
quality to the instants at which signal samples are
digitized and converted back to analog
Restriction eliminated because digital realizations are
not subject to such tolerances
Quick program changes
Not needed because their functions can be created in
software
Programming permits vastly greater flexibility for
modifications, improvements, and extra features;
Much wider range of options at reduced costs, size,
weight and maintenance.