For the circuit of Fig. 4.56, assume that (W/L) 8 = (W/L). Ignoring the body effect, find

Question:

For the circuit of Fig. 4.56, assume that (W/L)₈= (W/L). Ignoring the body effect, find (W/L)₆and (W/L)₇so that V_DS6= VDS₇= V_ov8. Draw the schematic of a double-cascode current mirror that uses the circuit of Fig. 4.56 to bias both cascade devices in the output branch. For this current mirror, calculate the output resistance, the minimum output voltage for which all three transistors in the output branch operate in the active region, the total voltage across all the devices in the input branch, and the systematic gain error.

Figure 4.56:

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