| 摘要 |
PURPOSE:To set a temperature coefficient of the power consumption of the integrated circuit to a value smaller than that in the case when only one of a resistor having a positive temperature coefficient and a resistor having a negative temperature coefficient is used by employing both the resistors in the integrated circuit. CONSTITUTION:When a low logic level is applied to input terminals 1, 2 and an output terminal 3 is at a low logic level and an output terminal 4 is at a high logic level, currents flowing through resistors RE, RT1, RT2 are each IRE, IRT1, IRT2. When total currents are ICC, a formula ICC=IRE+IRT1+IRT2 is given, and total power consumption (P) is ¦VEE¦XICC. When all of the temperature coefficients of the resistors RE, RT1, RT2 are negative, all of the currents IRE, IRT1, IRT2 increase with a temperature rise, and total power consumption P also increases. When resistors having positive temperature coefficients are usd as the terminal resistors RT1, RT2, IRT'1 and IRT'2 reduce to below values of terminal current IRT1' IRT2 with a temperature rise. That is, the temperature coefficients of total currents ICC and total power consumption P' can also be set to values smaller than ICC and P, and the increase of power can be suppressed even by a temperature rise. |
