ISL70444SEH Datasheet, PDF (20/23 Pages) Intersil Corporation – 19MHz Rad Hard 40V Quad Rail-to-Rail Input-Output, Low-Power Operational Amplifiers

ISL70444SEH
Unused Channel Configuration
The ISL70444SEH is a quad op amp. If the application does not
require the use of all four op amps, the user must configure the
unused channels to prevent it from oscillating. Any unused
channels will oscillate if the input and output pins are floating.
This results in higher-than-expected supply currents and possible
noise injection into any active channels being used. The proper
way to prevent oscillation is to short the output to the inverting
input, and ground the positive input (Figure 61).
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FIGURE 61. PREVENTING OSCILLATIONS IN UNUSED CHANNELS
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FN8411.1
June 14, 2013