Name
Title | ||
|---|---|---|
All-Digital Background Calibration Technique for Time-Interleaved ADC Using Pseudo Aliasing Signal |
Abstract | ||
|---|---|---|
A new digital background calibration technique for gain mismatches and sample-time mismatches in a Time-Interleaved Analog-to-Digital Converter (TI-ADC) is presented to reduce the circuit area. In the proposed technique, the gain mismatches and the sample-time mismatches are calibrated by using pseudo aliasing signals instead of using a bank of adaptive FIR filters which is conventionally utilized. The pseudo aliasing signals are generated and subtracted from an ADC output. A pseudo aliasing generator consists of the Hadamard transform and a fixed FIR filter. In case of a two-channel 10-bit TI-ADC, the proposed technique reduces the requirement for a word length of the FIR filter by about 50% without a look-up table (LUT) compared with the conventional technique. In addition, the proposed technique requires only one FIR filter compared with the bank of adaptive filters which requires (M-1) FIR filters in an M-channel TI-ADC. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/TCSI.2013.2249176 | Circuits and Systems I: Regular Papers, IEEE Transactions |
Keywords | Field | DocType |
Hadamard transforms,analogue-digital conversion,calibration,ADC output,Hadamard transform,M-channel TI-ADC,adaptive FIR filters,all-digital background calibration technique,circuit area reduction,fixed FIR filter,gain mismatch,pseudoaliasing generator,pseudoaliasing signal,sample-time mismatch,time-interleaved ADC,time-interleaved analog-to-digital converter,two-channel TI-ADC,word length 10 bit,ADC,Hadamard transform,all-digital background calibration,derivative filter,fixed FIR,pseudo aliasing signal,time-interleaved | Lookup table,Control theory,Electronic engineering,Aliasing,Adaptive filter,Finite impulse response,Hadamard transform,Mathematics,Calibration | Journal |
Volume | Issue | ISSN |
60 | 5 | 1549-8328 |
Citations | PageRank | References |
21 | 1.16 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| junya matsuno | 1 | 30 | 3.05 |
| Takafumi Yamaji | 2 | 21 | 1.16 |
| Masanori Furuta | 3 | 22 | 3.56 |
| Tetsuro Itakura | 4 | 187 | 33.44 |