A digital-to-analog converter includes: a first partial circuit with a first bank of resistors and a first group of switches; a second partial circuit; a first resistor; a third partial circuit with a third bank of resistors and a third group of switches; and a fourth partial circuit with a fourth bank of resistors and a fourth group of switches Supposing that the first resistor has a resistance value R, the fourth bank of resistors has a combined resistance value of 2.sup.(n-m)R, the first bank of resistors has a combined resistance value of (2.sup.m−1)R, the third bank of resistors has a combined resistance value of (2.sup.m−1)R, and the second partial circuit has a combined resistance value of R/(2.sup.(n-m)−1).

A digital-to-analog converter includes: a first partial circuit with a first bank of resistors and a first group of switches; a second partial circuit; a first resistor; a third partial circuit with a third bank of resistors and a third group of switches; and a fourth partial circuit with a fourth bank of resistors and a fourth group of switches Supposing that the first resistor has a resistance value R, the fourth bank of resistors has a combined resistance value of 2.sup.(n−m)R, the first bank of resistors has a combined resistance value of (2.sup.m−1)R, the third bank of resistors has a combined resistance value of (2.sup.m−1)R, and the second partial circuit has a combined resistance value of R/(2.sup.(n−m)−1).

A digital to analog converter, a method for driving the same, and a display device are provided. The digital to analog converter includes: a first resistor string, 2.sup.m first multiplexers, a first voltage selector, a second resistor string, a second voltage selector, and a second multiplexer, where the 2.sup.m first multiplexers, the first voltage selector, and the second voltage selector operate in cooperation with each other so that the entire second resistor string can be connected in series to the first resistor string for further division.

A digital to analog converter (DAC) that receives a binary coded signal and generates an analog output signal includes a binary-to-thermometer decoder and a resistive network. The decoder receives the binary coded signal, and decodes it into thermometer signals. The resistive network has branches that are coupled to an output terminal of the DAC in response to the thermometer signals. Each of the branches includes first and second resistors, and a switch. The first resistor is coupled between a first reference voltage and the switch, and the second resistor is coupled between a second reference voltage and the switch. The switch couples either the first resistor or the second resistor to the output terminal in response to a corresponding thermometer signal.

Increasing a dynamic range of a digital to analog converter (DAC). A signal analysis element is positioned prior to the DAC in a processing path. The element evaluates an instantaneous amplitude of a signal to be applied to the DAC. The DAC is capable of a first full scale value. An additional current source supports a second full scale value of the DAC, which is greater than the first full scale value. Upon the element determining that a condition is not satisfied, the element employs current steering to couple the additional current source to a current sink. However, upon the element determining that the condition is satisfied, the element employs current steering to couple the additional current source to an output of the DAC to support the second full scale value of the DAC.

The present application discloses a low-voltage digital to analog conversion circuit, a data driving circuit and a display system. At least one voltage dividing unit comprises a number of resistors connected in series between a lower limit of voltage and an upper limit of voltage, and voltage dividing output terminals drawn from the resistors' connection nodes and an upper limit of voltage connection end. Introducing the voltage dividing unit renders the low-voltage digital signal to analog signal conversion circuit, the data driving circuit, and the display system low-voltage devices with low power consumption and small chip area.

A digital to analog converter, a method for driving the same, and a display device are provided. The digital to analog converter includes: a first resistor string, 2.sup.m first multiplexers, a first voltage selector, a second resistor string, a second voltage selector, and a second multiplexer, where the 2.sup.m first multiplexers, the first voltage selector, and the second voltage selector operate in cooperation with each other so that the entire second resistor string can be connected in series to the first resistor string for further division.

Current-generation circuitry, comprising: a plurality of candidate current sources operable to generate respective candidate currents; an output current source operable to generate an output current; comparator circuitry; and control circuitry operable to control the current sources and the comparator circuitry to: in an adjustment step, generate an adjustment current by selecting one of the candidate currents or by summing together a plurality of the candidate currents, and calibrate at least a plurality of the candidate current sources; and in a calibration step, following the adjustment step, generate a reference current by selecting one of the candidate currents generated by the candidate current sources calibrated in the adjustment step or by summing together a plurality of the candidate currents generated by those candidate current sources, and calibrate the output current source by comparing its output current to that reference current and adjusting a control signal applied to that output current source.

A digital-to-analog converter comprises a converter output (11), a dummy output (12), a first number N of current sources (13-17), a first switching arrangement (18), a first current divider (24), a second switching arrangement (31) and a second current divider (60). The current sources (13-17) are coupled via the first switching arrangement (18) to the converter output (11), the dummy output (12) or to an input current terminal (25) of the first current divider (24). The output current terminals (26-30) of the first current divider (24) are coupled via the second switching arrangement (31) to the converter output (11), the dummy output (12) or to an input current terminal (61) of the second current divider (60). The output current terminals (63-66) of the second current divider (60) are coupled to the converter output (11) or the dummy output (12).

A digital to analog converter (DAC) that receives a binary coded signal and generates an analog output signal includes a binary-to-thermometer decoder and a resistive network. The decoder receives the binary coded signal, and decodes it into thermometer signals. The resistive network has branches that are coupled to an output terminal of the DAC in response to the thermometer signals. Each of the branches includes first and second resistors, and a switch. The first resistor is coupled between a first reference voltage and the switch, and the second resistor is coupled between a second reference voltage and the switch. The switch couples either the first resistor or the second resistor to the output terminal in response to a corresponding thermometer signal.