D/A CONVERSION CIRCUIT
First Claim
1. A digital/analog conversion circuit, comprising:
- a digital/analog conversion portion which outputs a first current according to an input digital signal; and
a first current mirror circuit which generates a mirror current according to the first current and outputs the mirror current as an analog signal,the digital/analog conversion circuit converting the digital signal into the analog signal, and further comprising;
a second current mirror circuit, which generates a first mirror current according to the first current; and
a third current mirror circuit, which is connected to a reference voltage, and to which the first mirror current is input, and which generates a second mirror current equal to the first current, according to the first mirror current, between the digital/analog conversion portion and the second current mirror circuit.
3 Assignments
0 Petitions
Accused Products
Abstract
In an mode of this invention, a digital/analog conversion circuit, includes: a digital/analog conversion portion which outputs a first current according to an input digital signal; and a first current mirror circuit which generates a mirror current according to the first current and outputs the mirror current as an analog signal, the digital/analog conversion circuit converting the digital signal into the analog signal, and further including: a second current mirror circuit, which generates a first mirror current according to the first current; and a third current mirror circuit, which is connected to a reference voltage, and to which the first mirror current is input, and which generates a second mirror current equal to the first current, according to the first mirror current, between the digital/analog conversion portion and the second current mirror circuit.
-
Citations
16 Claims
-
1. A digital/analog conversion circuit, comprising:
-
a digital/analog conversion portion which outputs a first current according to an input digital signal; and a first current mirror circuit which generates a mirror current according to the first current and outputs the mirror current as an analog signal, the digital/analog conversion circuit converting the digital signal into the analog signal, and further comprising; a second current mirror circuit, which generates a first mirror current according to the first current; and a third current mirror circuit, which is connected to a reference voltage, and to which the first mirror current is input, and which generates a second mirror current equal to the first current, according to the first mirror current, between the digital/analog conversion portion and the second current mirror circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A digital/analog conversion circuit, comprising:
-
a digital/analog conversion portion which outputs a first current and a second current in a differential relationship according to input digital signals; and first and fourth current mirror circuits which generate mirror currents according to the first and second currents for output as differential analog signals, the digital/analog conversion circuit converting the digital signals into the analog signals, and further comprising; a second current mirror circuit, which generates a first mirror current according to the first current; a third current mirror circuit, which is connected to a reference voltage, and to which the first mirror current is input, and which generates a second mirror current equal to the first current, according to the first mirror current, between the digital/analog conversion portion and the second current mirror circuit; a fifth current mirror circuit, which generates a third mirror current according to the second current; and a sixth current mirror circuit, which is connected to the reference voltage, and to which the third mirror current is input, and which generates a fourth mirror current equal to the second current, according to the third mirror current, between the digital/analog conversion portion and the fifth current mirror circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
Specification