August 2005
Intermediate to advanced
608 pages
18h 12m
English
Content preview from Current Sources and Voltage References
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Chapter 5
Using Precision Matched-Pairs, Duals, and Quads
5.1 Precision BJT matched-pairs
As we learned from the previous chapter, some of the most accurate BJT-based cur-
rent sources that the designer can create at the circuit board level use precision
matched-pairs and quads. These are available from Analog Devices, National Semi-
conductor, and second-source specialists Linear Integrated Systems. Precision
matched monolithic BJT pairs and quads represent the highest quality and precision
available in a silicon transistor. All three manufacturers make NPN matched-pairs.
Analog Devices and Linear Integrated Systems also offer PNP matched-pairs. ...
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