In the analysis of the hypothetical reference of Fig. 4.44, the current I₁was assumed proportional to temperature. Assume instead that this current is derived from a diffused resistor, and thus has a TC_Fof ˆ’1500 ppm/ °C. Determine the new value of V_OUTrequired to achieve zero TC_Fat 25°C. Neglect base current.

Fig. 4.44:

Transcribed Image Text:

VBE(on) Vcc -2 mV/°C - T V BE(on) Sum VOUT = VBE(on) + MVr MV7 м VT VT generator +3300 ppm/°C = + 0.085 mV/°C - T