Meget langsom - 27 kHz i båndbredde er vel nok ;-) :
LPV511 RRIO 1uA 27kHz 2,7-12V:
Citat: "... LPV511 - micropower Rail-to-Rail Input and Output Operational Amplifier from the PowerWise® Family ... Rail-to-rail input ... Rail-to-rail output...100 mV from rails ... The LPV511 has an input range that includes both supply rails for ground and high side battery sensing applications. The LPV511 output swings within 100 mV of either rail to maximize the signal's dynamic range in low supply applications. In addition, the output is capable of sourcing
650 µA of current when powered by a 12V battery. ..."
Meget hurtig - men bruger 650 gange så meget i strøm - og 50uA i shutdown mode:
LMH6647 RRIO 0,65mA 55MHz shutdown pin 2,5-12V:
Citat: "... LMH6647 - 2.7V, 650µA, 55MHz, Rail-to-Rail Input and Output Amplifiers with Shutdown Option ... Input common mode voltage...0.3V beyond rails ("afsporet op-amp?" :D :D :D :D ) ... Output voltage swing...20mV from rails ... Input common mode voltage range exceeds either supply by 0.3V, enhancing ease of use in multitude of applications where previously only inferior devices could be used. Output voltage range extends to within 20mV of either supply rails, allowing wide dynamic range especially in low voltage applications. Even with low supply current of 650µA/amplifier, output current capability is kept at a respectable ±20mA for driving heavier loads. Important device parameters such as BW, Slew Rate and output current are kept relatively independent of the operating supply voltage by a combination of process enhancements and design architecture. ..."
Citat: "... As the need for more energy-efficient equipment increases, similar methods will be required to determine the best power-to-performance ratio of a component or system. National Semiconductor has developed product efficiency metrics as a means for measuring a device?s power consumption to its level of performance. The top tier of products within these metrics are classified as members of the PowerWise® product family. Table 1 shows the various component families and the associated metrics and performance thresholds used to select the highest performance-to-power ratio products. ..."