التفاصيل البيبلوغرافية
| العنوان: |
Low-Noise Chopper-Stabilized Multi-Path Operational Amplifier with Nested Miller Compensation for High-Precision Sensors |
| المؤلفون: |
Jaesung Kim, Hyungseup Kim, Kwonsang Han, Donggeun You, Hyunwoo Heo, Yongsu Kwon, Dong-il “Dan” Cho, Hyoungho Ko |
| المصدر: |
Applied Sciences; Volume 10; Issue 1; Pages: 281 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2019 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
low-noise amplifier, chopper stabilization technique, ripple reduction loop (RRL), notch, multi-path amplifier, class AB output, noise efficiency factor (NEF) |
| جغرافية الموضوع: |
agris |
| الوصف: |
This paper presents a low-noise multi-path operational amplifier for high-precision sensors. A chopper stabilization technique is applied to the amplifier to remove offset and flicker noise. A ripple reduction loop (RRL) is designed to remove the ripple generated in the process of up-modulating the flicker noise and offset. To cancel the notch in the overall transfer function due to the RRL operation, a multi-path architecture using both a low-frequency path (LFP) and high-frequency path (HFP) is implemented. The low frequency path amplifier is implemented using the chopper technique and the RRL. In the high-frequency path amplifier, a class-AB output stage is implemented to improve the power efficiency. The transfer functions of the LFP and HFP induce a first-order frequency response in the system through nested Miller compensation. The low-noise multi-path amplifier was fabricated using a 0.18 µm 1P6M complementary metal-oxide-semiconductor (CMOS) process. The power consumption of the proposed low-noise operational amplifier is 0.174 mW with a 1.8 V supply and an active area of 1.18 mm2. The proposed low-noise amplifier has a unit gain bandwidth (UGBW) of 3.16 MHz, an input referred noise of 11.8 nV/√Hz, and a noise efficiency factor (NEF) of 4.46. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
https://dx.doi.org/10.3390/app10010281 |
| DOI: |
10.3390/app10010281 |
| الاتاحة: |
https://doi.org/10.3390/app10010281 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.FF39069E |
| قاعدة البيانات: |
BASE |