((a) Multistage current mirror, and (b) noninteger-ratio current mirror. The three T2 collectors may be joined to give 3I_IN

Authors	James Bryant
Main Document	Article «Current-Output Circuit Techniques Add Versatility to Your Analog Toolbox»
Description	Figure 2
File Format / Size	PDF / 23 Kb
Document Language	English

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Article «Current-Output Circuit Techniques Add Versatility to Your Analog Toolbox»

Figure 1. Basic current mirror
Figure 2. ((a) Multistage current mirror, and (b) noninteger-ratio current mirror. The three T2 collectors may be joined to give 3I_IN
Figure 3. Wilson current mirror. T4 is optional but improves accuracy and dynamic range
Figure 4. Transconductance amplifier. V_IN -> I_OUT
Figure 5. Op-amp current mirror
Figure 6. (a) Inverting low Z_IN current mirror, and (b) noninverting low Z_IN current mirror
Figure 7. Current mirror for grounded load
Figure 8. Level-shifting current mirrors
Figure 9. Howland current pump. Bipolar current output
Figure 10. Bipolar-current op amp
Figure 11. 2-terminal current source
Figure 12. JFET current source
Figure 13. Black-brick switching supply modified for current-limit output

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