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Using ALD’s programmable EPADs® to create precision current sources
9.4 Using ALD’s programmable EPADs
®
to create precision current sources
The EPAD
®
is a kind of analog version of the digital EPROM. Advanced Linear
Devices pioneered the electrically programmable analog device (EPAD
®
) in the late
1990s. Initially, these were matched-pairs and quad transistor arrays, but subse-
quently they have introduced a whole range of op amps, A/D converters, and other
devices. The ALD 1108E (quad) and ALD1110E (dual) precision matched-pairs are
examples of this exciting new technology. These CMOS transistor arrays are designed
to operate over a 2- to 10-volt ...