Extended Data Fig. 6 | Measurement setup. a, Schematics of the existing
measurement setup. b, Equivalent circuit of the current measurement setup.
Iout and Rout represent the output current and output resistance of the device. CL
is the parasitic capacitance of about 4 nF. RIV and RF are the input resistance and
feedback resistance of the I/V converter, respectively. c, Schematic of an
integrated high-speed current reading circuit. Here, RIV is a resistor to convert
current to voltage, CL is the parasitic capacitance that can be reduced to below
1 f F. RO is a resistor that sets the amplification.