Small-area DAC using adaptive body bias scheme for AMOLED data driver ICs
- Title
- Small-area DAC using adaptive body bias scheme for AMOLED data driver ICs
- Author
- 권오경
- Keywords
- LOW-POWER; BACKLIGHT
- Issue Date
- 2015-08
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Citation
- ELECTRONICS LETTERS, v. 51, NO 17, Page. 1322-1323
- Abstract
- A small-area digital-to-analogue converter (DAC) using an adaptive body bias scheme is proposed for active-matrix organic light-emitting diode (AMOLED) data driver ICs. The proposed scheme adjusts the body bias applied to the P-type (PMOS) decoder according to the average picture level (APL) and maintains a low on-resistance of the PMOS decoder at a high APL. This enables reduction of the DAC area by realising the upper-half decoder using only PMOS switches, unlike conventional DACs which use both PMOS and N-type switches. A 20-channel data driver IC is fabricated using a 0.18 pm HVCMOS technology with 1.8 V/18 V devices. The proposed DAC occupies 33% less area than the conventional DAC and the measured differential nonlinearity and integral nonlinearity are +0.09/-0.1 and +0.36/-0.47 LSB, respectively.
- URI
- http://digital-library.theiet.org/content/journals/10.1049/el.2015.0669http://hdl.handle.net/20.500.11754/26997
- ISSN
- 0013-5194; 1350-911X
- DOI
- 10.1049/el.2015.0669
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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