Digital-to-analog converter using capacitors and operational...

Details Digital-to-analog converter using capacitors and operational... Digital-to-analog converter using capacitors and operational...

2008-04-08

2008-04-08

Nguyen, Linh (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000, C341S145000

Reexamination Certificate

active

07355543

ABSTRACT:
A digital-to-analog converter using capacitors and an operational amplifier, which can be highly integrated due to its small area and which can rapidly perform a stable converting operation. The digital-to-analog converter includes a data input unit, a first conversion unit, a second conversion unit, and a signal output unit. When digital data is input to the data input unit, the data input unit is connected to the first conversion unit or the second conversion unit. The first conversion unit charges a first charging capacitor with a voltage corresponding to the input digital data and distributes the charged charges to a first distribution capacitor. The second conversion unit charges a second charging capacitor with the voltage corresponding to the input digital data and distributes the charged charges to a second distribution capacitor. The signal output unit outputs an analog data signal corresponding to the voltage across the first distribution capacitor or the voltage across the second distribution capacitor in response to a select control signal.

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