AN843 Datasheet, PDF (3/4 Pages) Silicon Laboratories – Using Analog Components to Manage Power in Low-Power Solar Systems

AN843
2.1. Assessing “Always-On” Circuitry
Generally, an ultra-low-power op amp, like the TS1001, is an excellent option for supporting “always-on” analog
circuitry. For example, op amps that are guaranteed to operate under 1 V and consume less than 1 µA current may
be configured as a filter and left continually on, so that a microcontroller making an ADC measurement does not
have to stay powered on while the filter settles.
In conclusion, ultra-low-power op amps are useful in low-power solar systems to assess the available power from
solar cells before a load is applied, and generally to support standby, “always-on” circuitry, while drawing negligible
currents.
For additional information, see the documentation for the TS1001 or contact Silicon Labs.
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