A Σ-Δ Modulator Based on an Inverter-based Integrator with Dynamic Current Switch
| Autor: | Chunhua Zhang, Mingchao Jian, Meng Yuan, Chunbing Guo |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 2477:012086 |
| ISSN: | 1742-6596 1742-6588 |
| Popis: | This paper presents a low-power high-resolution 3rd-order 1-bit Σ-Δ modulator based on an inverter-based integrator with a dynamic current switch. To reduce the power consumption of the modulator circuit, a dynamic current switch branch is added to form a low-power inverter-based integrator. A 3rd-order 1-bit Σ-Δ modulator is designed in a TSMC 65 nm CMOS technology to verify the effectiveness of the proposed integrator circuit. The prototype Σ-Δ modulator achieves 102.4 dB SNDR, 16.71 Bit ENOB in a 2 KHz signal BW at an Over Sampling Ratio (OSR) of 160, while consuming only 29.5-μW. And the FOMSNDR is 180.7 dB. |
| Databáze: | OpenAIRE |
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