Abstract
A 10-bit 100 MSamples/s current-steering D/A converter (DAC) has been designed and processed in a 0.8 μm BiCMOS process. The DAC is intended for applications using direct digital synthesis, and focus has been set on reducing dynamic nonlinearities to achieve a high spurious free dynamic range (SFDR1) at high generated frequencies. The main part of the DAC consists of a matrix of current cells. Each current cell contains an emitter-coupled logic (ECL) flip-flop, clocked by a global ECL clock to ensure accurate clocking. A bipolar differential pair, steered by the differential output of the ECL flip-flop, is used in each current cell to steer the current. The DAC operates at 5 V, and has a power consumption of 650 mW. The area of the chip-core is 2.2 mm×2.2 mm. The measured integral nonlinearity (INL) and differential nonlinearity (DNL) were both approximately 2 LSB. At a generated frequency of fg≈0.3·fs (fs=100 MSamples/s), the measured SFDR was approximately 43 dB
| Original language | English |
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| Title of host publication | Proc. 1996 IEEE International Symposium on Circuits and Systems |
| Place of Publication | Piscataway |
| Publisher | IEEE |
| Publication date | 1996 |
| Pages | 425-428 |
| ISBN (Print) | 0-7803-3073-0 |
| DOIs | |
| Publication status | Published - 1996 |
| Event | 1996 IEEE International Symposium on Circuits and Systems - Atlanta, GA, United States Duration: 12 May 1996 → 15 May 1996 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=3834 |
Conference
| Conference | 1996 IEEE International Symposium on Circuits and Systems |
|---|---|
| Country/Territory | United States |
| City | Atlanta, GA |
| Period | 12/05/1996 → 15/05/1996 |
| Internet address |