Citation: |
Fanyang Li. A 0.9 V PSRR improved voltage reference using a wide-band cascaded current mode differentiator[J]. Journal of Semiconductors, 2018, 39(10): 105002. doi: 10.1088/1674-4926/39/10/105002
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F Y Li, A 0.9 V PSRR improved voltage reference using a wide-band cascaded current mode differentiator[J]. J. Semicond., 2018, 39(10): 105002. doi: 10.1088/1674-4926/39/10/105002.
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A 0.9 V PSRR improved voltage reference using a wide-band cascaded current mode differentiator
DOI: 10.1088/1674-4926/39/10/105002
More Information
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Abstract
We present a voltage reference using a wide-band cascaded current mode differentiator, for the improved PSRR performance. Compared with the conventional references, the reference with the technique is mainly characterized by a two cascaded stages current mode signal differentiator. In the differentiator, a zero OTA Gm is proposed, to achieve the wide-band differential characteristic. With the technique, the PSRR beyond the pole’s corresponding frequency can be significantly improved with the minimum supply voltage only about VGS_PMOS + (VGS_NMOS − VTH). Fabricated with a 0.18 μm CMOS process, with the 0.9 V supply voltage, the PSRR @ 20 MHz of the reference is achieved at −54 dB. Moreover, the power dissipation is 19 μW.-
Keywords:
- reference,
- current mode,
- differentiator
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References
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