lm358内部电路图

lm358内部电路图
  
  lm358中文资料参数pdf
  The LM258 series is made using two internally
  compensated, two–stage operational amplifiers. The first
  stage of each consists of differential input devices Q20 and
  Q18 with input buffer transistors Q21 and Q17 and the
  differential to single ended converter Q3 and Q4. The first
  stage performs not only the first stage gain function but also
  performs the level shifting and transconductance reduction
  functions. By reducing the transconductance, a smaller
  compensation capacitor (only 5.0 pF) can be employed, thus
  saving chip area. The transconductance reduction is
  accomplished by splitting the collectors of Q20 and Q18.
  Another feature of this input stage is that the input common
  mode range can include the negative supply or ground, in
  single supply operation, without saturating either the input
  devices or the differential to single–ended converter. The
  second stage consists of a standard current source load
  amplifier stage.
  Each amplifier is biased from an internal–voltage regulator
  which has a low temperature coefficient thus giving each
  amplifier good temperature characteristics as well as
  excellent power supply rejection.