Battery-driven low-power reference voltage generation circuit

There is nothing special about the circuit configuration. It is the same as the circuit of "16_2", but a low-power
OP amplifier is selected , and the bias resistor uses a high resistance value as much as possible. Reduce current consumption.     If the bias current of the reference voltage diode,. is 3011A, Ri=(V.-vI) /J=83k C2, chuwang is determined by the current flowing through the resistor divider circuit, J. If la is small, lu.A, then RL=(V .-v,)/Irr=25k0. R,+ VRi depends on the mine cover/I,. If the variation range is ±5%, then R,≤(Vi/ln)×0.95= 237kQ, VRi≥(P-/,日)x 0.1=2sk<2 0 220k 0,sok Q’s. Resistors are relatively easy to obtain, so choose this value.