JP2005217576A5 - - Google Patents

Claims (6)

An input signal which is a voltage signal having a first signal input transistor and a second signal input transistor constituting a differential pair, and a third signal input transistor and a fourth signal input transistor constituting a differential pair, and voltage for converting the complementary signal into a current signal - a current converter, the voltage - frequency divider phase with each other by using the current signal output from the current conversion unit is provided with a latch unit for generating a 90 over two different signals In
The voltage-current converter is
A fifth transistor that is Darlington connected to the first signal input transistor and that inputs a complementary signal of the input signal as a base;
A sixth transistor that is Darlington connected to the second signal input transistor and that inputs the input signal as a base;
A seventh transistor that is Darlington connected to the third signal input transistor and that inputs the input signal as a base;
Divider, characterized in that it comprises an eighth transistor for inputting a complementary signal of the input signal to the base while being Darlington-connected to said fourth signal input transistors. The collector of the first signal input transistor and the collector of the sixth transistor are commonly connected, the collector of the second signal input transistor and the collector of the fifth transistor are commonly connected, and the third transistor The frequency divider according to claim 1, wherein a collector of the signal input transistor and a collector of the eighth transistor are commonly connected, and a collector of the fourth signal input transistor and a collector of the seventh transistor are commonly connected. Vessel . The frequency divider according to claim 1, wherein a constant voltage is applied to a collector of the fifth transistor, a collector of the sixth transistor, a collector of the seventh transistor, and a collector of the eighth transistor. An input signal which is a voltage signal having a first signal input transistor and a second signal input transistor constituting a differential pair, and a third signal input transistor and a fourth signal input transistor constituting a differential pair, and A 90-degree shift provided with a voltage-current converter that converts a complementary signal into a current signal and a latch that generates two signals that are 90 ° out of phase using the current signal output from the voltage-current converter. In the phaser,
A degeneration resistor is provided for each of the differential pair constituted by the first signal input transistor and the second signal input transistor and the differential pair constituted by the third signal input transistor and the fourth signal input transistor. A frequency divider is provided . The frequency divider according to claim 1, further comprising a capacitor connected in parallel to the output load resistance of the latch unit. A portable device comprising the frequency divider according to claim 1.