Hi I would like to stock a small assortment of operational amplifiers for quick= and convenient use, and i think some people here have suggestions. (today= i often use TL07x, TL05x but i feel need to upgrade) I would like to select one or two types for each cathegory as listed below. You are welcome to fill in suggestions, plus reasons why. And maybe add some cathegory.=20 (audio / power / video) Maybe we should add cathegories for comparators too? (cheap / fast / low power / with reference) If somebody know of some good comparision chart or something please post a= link. I dream of a large spreadsheet with lots of parameters neatly in columns,= including cost, links to detailed datasheet... -so if somebody don=B4t have= anything else to do... ;) I am thinking on following cathegories: ------------------------------------------------ * Decent low cost LM324/224/124: Cheap quad. Inputs go below GND, output go near GND. 3..30V= supply. <9mV Offset. ------------------------------------------------ * Better (Lower Offset, Lower noise, still not very expensive) (-No demand of rail-rail, low voltage etc) TLE206x (performance upgrade for TL05x, TL07x, and MUCH lower power: typ= 0,3mA/OP)=20 ------------------------------------------------ * ofset about 1mV or better, and low offset drift=20 (but not chopper)(may be expensive) ? ------------------------------------------------ * Fast ------------------------------------------------ * Low voltage, rail-rail input and outputs LM6142/6144: 1,8..24V, rail-rail in and out. Offset 0,8..4 mV max depending= on part no suffix. ------------------------------------------------ * Choppers ICL7650S: Offset max 10uV @ 85=B0C. Supply +/-3..8V max 3,5mA. 2MHz BW. ------------------------------------------------ * Instrumental and such (one or more Opamp plus precision resistors) LT1101: Fixed gain of 10 or 100 (+/- 0,04% max). Supply typ 0,1mA. LTC1100: Instrumental chopper, OS max 10uV. Fixed gain of 10 or 100. ------------------------------------------------ /Morgan -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads